Merge pull request #412 from jruby-gradle/master

Release 2.1.0-alpha.1
Merge pull request #411 from ysb33r/gradle7
2020-10-30 20:57:00 +01:00 · 2020-10-30 20:54:53 +01:00 · 2020-10-29 22:15:06 +01:00 · 2020-01-17 23:38:19 +01:00 · 2020-01-17 23:20:46 +01:00 · 2020-01-17 23:11:26 +01:00
98 changed files with 1237 additions and 505 deletions
--- a/HACKING.adoc
+++ b/HACKING.adoc
@ -19,4 +19,4 @@ In a similar manner for integration tests one can do `./gradlew integrationTest

 Go to `File` -> `Settings` -> `Build, Execution, Deployment` -> `Gradle` -> `Runner`, then check `Delete build/run actions to Gradle` and select `Platform Test Runner`.

-On a Mac use `IntelliJ IDEA` -> `Preferences` instead of `File/Settings`.
+On a Mac use `IntelliJ IDEA` -> `Preferences` instead of `File/Settings`.
--- a/base-plugin/README.adoc
+++ b/base-plugin/README.adoc
@ -7,7 +7,7 @@ image::https://api.bintray.com/packages/jruby-gradle/plugins/jruby-gradle-plugin

 === Compatibility

-This plugin requires link:http://gradle.org[Gradle] 4.0 or better
+This plugin requires link:http://gradle.org[Gradle] 4.9 or better

 === Installing

--- a/base-plugin/build.gradle
+++ b/base-plugin/build.gradle
@ -22,7 +22,6 @@ project.afterEvaluate {
 // --- up to here

 ext {
-    olderJRubyVersion = '9.2.1.0'
    slimVersion = '2.0.2'
    leafyVersion = '0.4.0'
 }
@ -48,31 +47,27 @@ dependencies {
        exclude group: 'org.codehaus.groovy'
    }

-    // NOTE: This is used by JRubyPrepareGemsIntegrationSpec
-    integrationTestGems "rubygems:slim:${slimVersion}"
-
-    // NOTE: This is used by JRubyPrepareJarsIntegrationSpec
-    integrationTestGems "rubygems:leafy-complete:${leafyVersion}"
-
-    // NOTE: If you change this, you will also need to update JRubyExecIntegrationSpec & JRubyExecExtensionIntegrationSpec
-    integrationTestGems 'rubygems:credit_card_validator:1.1.0'
-
-    // NOTE: If you change this, you will also need to update JRubyExecIntegrationSpec
-    integrationTestGems 'rubygems:rspec:3.1.0'
-
-    // NOTE: This should always be an older older version. 
+    // NOTE: This should always be an older older version.
    // It is used by JRubyExecIntegrationSpec
    integrationTestGems "org.jruby:jruby-complete:${olderJRubyVersion}"

-    // NOTE: older jruby versions needs this for exec to work properly
-    integrationTestGems "rubygems:jar-dependencies:0.1.15"
-
    // This is used by JRubyExecExtensionIntegrationSpec
    integrationTestGems "org.bouncycastle:bcprov-jdk15on:${bcprovVersion}"

+    // This is used by JRubyPrepareJarsIntegrationSpec
+    integrationTestGems "io.dropwizard.metrics:metrics-core:${dropwizardMetricsCoreVersion}"
+
    gradleTest "org.jruby:jruby-complete:${jrubyVersion}"
-    gradleTest 'rubygems:credit_card_validator:1.1.0'
    gradleTest 'org.bouncycastle:bcprov-jdk15on:1.50'
+
+    // These are real GEMs which cannot currently be cached
+//    gradleTest 'rubygems:credit_card_validator:1.1.0'
+//    integrationTestGems "rubygems:slim:${slimVersion}"
+//    integrationTestGems "rubygems:leafy-complete:${leafyVersion}"
+//    integrationTestGems 'rubygems:credit_card_validator:1.1.0'
+//    integrationTestGems 'rubygems:rspec:3.1.0'
+//    integrationTestGems "rubygems:jar-dependencies:0.1.15"
+
 }

 generateTestConfig {
@ -81,7 +76,10 @@ generateTestConfig {
            bcprovVersion: bcprovVersion,
            olderJRubyVersion: olderJRubyVersion,
            slimVersion: slimVersion,
-            leafyVersion: leafyVersion
+            leafyVersion: leafyVersion,
+            creditCardValidatorVersion : '1.1.0',
+            dropwizardMetricsCoreVersion : dropwizardMetricsCoreVersion,
+            rspecVersion : '3.1.0'
 }

 task copyIntegrationTestJRuby(type: Copy) {
--- a/base-plugin/src/gradleTest/jrubyExec/build.gradle
+++ b/base-plugin/src/gradleTest/jrubyExec/build.gradle
@ -6,8 +6,12 @@ configurations {
    jrubyExec
 }

+repositories {
+    ruby.gems()
+}
+
 dependencies {
-    jrubyExec ':credit_card_validator:1.1.0@gem'
+    jrubyExec 'rubygems:credit_card_validator:1.1.0'
 }


--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyExecExtensionIntegrationSpec.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyExecExtensionIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -25,14 +25,16 @@ package com.github.jrubygradle

 import com.github.jrubygradle.testhelper.IntegrationSpecification
 import org.gradle.testkit.runner.BuildResult
+import spock.lang.IgnoreIf

 /**
 * @author Schalk W. Cronjé
 */
+@IgnoreIf({System.getProperty('TESTS_ARE_OFFLINE')})
 class JRubyExecExtensionIntegrationSpec extends IntegrationSpecification {

-    static final String DEFAULT_TASK_NAME = 'inlineJRubyExec'
-    static final String BCPROV_NAME = 'bcprov-jdk15on'
+    public static final String DEFAULT_TASK_NAME = 'inlineJRubyExec'
+    public static final String BCPROV_NAME = 'bcprov-jdk15on'

    void "Run a script with minimum parameters"() {
        setup:
@ -147,7 +149,7 @@ class JRubyExecExtensionIntegrationSpec extends IntegrationSpecification {
    @SuppressWarnings('BuilderMethodWithSideEffects')
    private void createJRubyExecProject(String preamble, String jrubyexecConfig) {
        buildFile.text = """
-        ${projectWithLocalRepo}
+        ${projectWithRubyGemsRepo}

        ${preamble}

--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyExecIntegrationSpec.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyExecIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -151,6 +151,10 @@ class JRubyExecIntegrationSpec extends IntegrationSpecification {
            script 'rspec'
        """

+        File specDir = new File(projectDir,'spec')
+        specDir.mkdirs()
+        new File(specDir,'sample.rb').text = ''
+
        when:
        BuildResult result = build()

@ -224,7 +228,7 @@ class JRubyExecIntegrationSpec extends IntegrationSpecification {
        buildFile.text = """
        import com.github.jrubygradle.JRubyExec

-        ${projectWithMavenRepo}
+        ${projectWithRubyGemsRepo}

        ${preamble ?: ''}

--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyGenerateGradleRbIntegrationSpec.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyGenerateGradleRbIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -30,6 +30,7 @@ import spock.lang.IgnoreIf
 /**
 * @author Schalk W. Cronjé
 */
+@IgnoreIf({System.getProperty('TESTS_ARE_OFFLINE')})
 class JRubyGenerateGradleRbIntegrationSpec extends IntegrationSpecification {

    static final String DEFAULT_TASK_NAME = 'RubyWax'
@ -40,7 +41,7 @@ class JRubyGenerateGradleRbIntegrationSpec extends IntegrationSpecification {
        buildFile.text = """
            import com.github.jrubygradle.GenerateGradleRb
    
-            ${projectWithLocalRepo}
+            ${projectWithRubyGemsRepo}
    
            task ${DEFAULT_TASK_NAME} (type: GenerateGradleRb)  {
                gemInstallDir 'build/gems'
--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyPrepareGemsIntegrationSpec.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyPrepareGemsIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -30,12 +30,14 @@ import spock.lang.Issue

 /**
 * @author Schalk W. Cronjé.
+ * @author Guillaume Grossetie
 */
+@IgnoreIf({ IntegrationSpecification.OFFLINE })
 class JRubyPrepareGemsIntegrationSpec extends IntegrationSpecification {

    static final String DEFAULT_TASK_NAME = 'jrubyPrepare'

-    String repoSetup = projectWithLocalRepo
+    String repoSetup = projectWithRubyGemsRepo
    String preamble
    String dependenciesConfig

@ -53,7 +55,6 @@ class JRubyPrepareGemsIntegrationSpec extends IntegrationSpecification {
        new File(projectDir, "gems/slim-${slimVersion}").exists()
    }

-    @IgnoreIf({ IntegrationSpecification.OFFLINE })
    void "Check if rack version gets resolved"() {
        setup:
        withPreamble """repositories.ruby.gems()
@ -72,10 +73,29 @@ class JRubyPrepareGemsIntegrationSpec extends IntegrationSpecification {
        then:
        // since we need a version range in the setup the
        // resolved version here can vary over time
-        new File(projectDir, "gems/rack-1.6.11").exists()
+        new File(projectDir, "gems/rack-1.6.13").exists()
+    }
+
+    void "Check if selenium-webdriver version gets resolved"() {
+        setup:
+        withPreamble """repositories.ruby.gems()
+            jrubyPrepare.outputDir = '${pathAsUriStr(projectDir)}'.toURI()
+        """
+
+        withDependencies """
+            gems 'rubygems:selenium-webdriver:3.142.6'
+            gems 'rubygems:webdrivers:4.1.3'
+        """
+
+        when:
+        build()
+
+        then:
+        // since we need a version range in the setup the
+        // resolved version here can vary over time
+        new File(projectDir, "gems/selenium-webdriver-3.142.6").exists()
    }

-    @IgnoreIf({ IntegrationSpecification.OFFLINE })
    void "Check that GEM dependencies are locked"() {
        setup:
        File lockFile = new File(projectDir, 'gradle/dependency-locks/gems.lockfile')
@ -117,7 +137,6 @@ rubygems:tilt:2.0.9
        new File(projectDir, "gems/rack-1.6.10").exists()
    }

-    @IgnoreIf({ IntegrationSpecification.OFFLINE })
    void "Check if prerelease gem gets resolved"() {
        setup:
        withDefaultRepositories()
@ -134,7 +153,6 @@ rubygems:tilt:2.0.9
    }

    @Issue('https://github.com/jruby-gradle/jruby-gradle-plugin/issues/341')
-    @IgnoreIf({ IntegrationSpecification.OFFLINE })
    void "Make an install-time gem dependency available"() {
        setup:
        withRubyGemsRepository()
--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyPrepareJarsIntegrationSpec.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/JRubyPrepareJarsIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -24,20 +24,23 @@
 package com.github.jrubygradle

 import com.github.jrubygradle.testhelper.IntegrationSpecification
+import spock.lang.IgnoreIf

 /**
 * @author Schalk W. Cronjé.
 * @author Christian Meier
 */
+@IgnoreIf({ IntegrationSpecification.OFFLINE })
 class JRubyPrepareJarsIntegrationSpec extends IntegrationSpecification {

    def "Check that default 'jrubyPrepare' uses the correct directory for the jars"() {
        given:
+        String testVer = testProperties.dropwizardMetricsCoreVersion
        buildFile.text = """
-            ${projectWithLocalRepo}
+            ${projectWithRubyGemsRepo}

            dependencies {
-                gems 'io.dropwizard.metrics:metrics-core:3.1.0'
+                gems "io.dropwizard.metrics:metrics-core:${testVer}"
            }                
        """

@ -45,7 +48,11 @@ class JRubyPrepareJarsIntegrationSpec extends IntegrationSpecification {
        gradleRunner('jrubyPrepare', '-i').build()

        then:
-        new File(projectDir, 'build/.gems/Jars.lock').text.trim() == 'io.dropwizard.metrics:metrics-core:3.1.0:runtime:'
-        new File(projectDir, 'build/.gems/jars/io/dropwizard/metrics/metrics-core/3.1.0/metrics-core-3.1.0.jar').exists()
+        new File(projectDir, 'build/.gems/Jars.lock').text.trim() ==
+            "io.dropwizard.metrics:metrics-core:${testProperties.dropwizardMetricsCoreVersion}:runtime:"
+        new File(
+            projectDir,
+            "build/.gems/jars/io/dropwizard/metrics/metrics-core/${testVer}/metrics-core-${testVer}.jar"
+        ).exists()
    }
 }
--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/testhelper/IntegrationSpecification.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/testhelper/IntegrationSpecification.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,29 +23,37 @@
 */
 package com.github.jrubygradle.testhelper

+
 import org.gradle.testkit.runner.GradleRunner
 import org.junit.Rule
 import org.junit.rules.TemporaryFolder
 import spock.lang.Shared
 import spock.lang.Specification

+import static com.github.jrubygradle.JRubyExecExtensionIntegrationSpec.BCPROV_NAME
+
 class IntegrationSpecification extends Specification {

-    static final boolean OFFLINE = System.getProperty('TESTS_ARE_OFFLINE')
+    public static final boolean OFFLINE = System.getProperty('TESTS_ARE_OFFLINE')

-    static final String HELLO_WORLD = 'helloWorld.rb'
-    static final String HELLO_NAME = 'helloName.rb'
-    static final String REQUIRES_GEM = 'requiresGem.rb'
-    static final String REQUIRE_THE_A_GEM = 'require-a-gem.rb'
-    static final String ENV_VARS = 'envVars.rb'
+    public static final String HELLO_WORLD = 'helloWorld.rb'
+    public static final String HELLO_NAME = 'helloName.rb'
+    public static final String REQUIRES_GEM = 'requiresGem.rb'
+    public static final String REQUIRE_THE_A_GEM = 'require-a-gem.rb'
+    public static final String ENV_VARS = 'envVars.rb'

    @Shared
    Map testProperties
+
    @Shared
    File flatRepoLocation
+
    @Shared
    File mavenRepoLocation

+    @Shared
+    Map artifactVersions
+
    @Rule
    TemporaryFolder testFolder

@ -57,6 +65,15 @@ class IntegrationSpecification extends Specification {
        testProperties = loadTestProperties()
        flatRepoLocation = new File(testProperties.flatrepo)
        mavenRepoLocation = new File(testProperties.mavenrepo)
+
+        artifactVersions = [
+            'credit_card_validator': testProperties.creditCardValidatorVersion,
+            'rspec'                : testProperties.rspecVersion,
+            'rspec-core'           : testProperties.rspecVersion,
+            'rspec-support'        : testProperties.rspecVersion,
+            'metrics-core'         : testProperties.dropwizardMetricsCoreVersion,
+            (BCPROV_NAME)          : testProperties.bcprovVersion
+        ]
    }

    void setup() {
@ -73,28 +90,19 @@ class IntegrationSpecification extends Specification {
        destination.text = this.class.getResource("/scripts/${name}").text
    }

+
    String findDependency(final String organisation, final String artifact, final String extension) {
-        "'${VersionFinder.findDependency(flatRepoLocation, organisation, artifact, extension)}'"
+        String ver = artifactVersions[artifact]
+        if (!ver) {
+            throw new RuntimeException("No version specified for ${artifact}")
+        }
+        "'${organisation ?: 'rubygems'}:${artifact}:${ver}@${extension}'"
    }

    String pathAsUriStr(final File path) {
        path.absoluteFile.toURI().toString()
    }

-    String getProjectWithLocalRepo() {
-        """
-        plugins {
-            id 'com.github.jruby-gradle.base'
-        }
-
-        repositories {
-            flatDir {
-                dirs '${pathAsUriStr(flatRepoLocation)}'.toURI()
-            }
-        }
-        """
-    }
-
    String getProjectWithMavenRepo() {
        """
        plugins {
@ -138,13 +146,14 @@ class IntegrationSpecification extends Specification {
        }
        """
    }
+
    GradleRunner gradleRunner(List<String> args) {
        GradleRunner.create()
-                .withProjectDir(projectDir)
-                .withDebug(true)
-                .withArguments(args)
-                .withPluginClasspath()
-                .forwardOutput()
+            .withProjectDir(projectDir)
+            .withDebug(true)
+            .withArguments(args)
+            .withPluginClasspath()
+            .forwardOutput()
    }

    GradleRunner gradleRunner(String... args) {
--- a/base-plugin/src/integTest/groovy/com/github/jrubygradle/testhelper/VersionFinder.groovy
+++ b/base-plugin/src/integTest/groovy/com/github/jrubygradle/testhelper/VersionFinder.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/logback-test.xml
+++ b/base-plugin/src/integTest/resources/logback-test.xml
@ -1,6 +1,6 @@
 <!--

-    Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+    Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
        Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.

    Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/scripts/envVars.rb
+++ b/base-plugin/src/integTest/resources/scripts/envVars.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/scripts/helloName.rb
+++ b/base-plugin/src/integTest/resources/scripts/helloName.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/scripts/helloWorld.rb
+++ b/base-plugin/src/integTest/resources/scripts/helloWorld.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/scripts/require-a-gem.rb
+++ b/base-plugin/src/integTest/resources/scripts/require-a-gem.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/integTest/resources/scripts/requiresGem.rb
+++ b/base-plugin/src/integTest/resources/scripts/requiresGem.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/GenerateGradleRb.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/GenerateGradleRb.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -29,16 +29,18 @@ import groovy.transform.CompileStatic
 import org.apache.tools.ant.filters.ReplaceTokens
 import org.gradle.api.DefaultTask
 import org.gradle.api.GradleException
+import org.gradle.api.file.CopySpec
 import org.gradle.api.file.FileCopyDetails
 import org.gradle.api.file.RelativePath
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.TaskAction
-import org.ysb33r.grolifant.api.StringUtils
+import org.ysb33r.grolifant.api.core.ProjectOperations
+import org.ysb33r.grolifant.api.v4.StringUtils

 import static com.github.jrubygradle.internal.JRubyExecUtils.classpathFromConfiguration

-/** Generate a LOAD_PATH Ruby file whichi is loadable by Ruby scripts when
+/** Generate a LOAD_PATH Ruby file which is loadable by Ruby scripts when
 * performing local manual testing.
 *
 * @author Schalk W. Cronjé
@ -53,6 +55,7 @@ class GenerateGradleRb extends DefaultTask implements JRubyAwareTask {

    GenerateGradleRb() {
        this.jruby = extensions.create(JRubyPluginExtension.NAME, JRubyPluginExtension, this)
+        this.projectOperations = ProjectOperations.create(project)
    }

    void destinationDir(Object dest) {
@ -72,7 +75,7 @@ class GenerateGradleRb extends DefaultTask implements JRubyAwareTask {
    }

    File getDestinationDir() {
-        project.file(destinationDir)
+        projectOperations.file(destinationDir)
    }

    @OutputFile
@ -86,7 +89,7 @@ class GenerateGradleRb extends DefaultTask implements JRubyAwareTask {
    }

    File getGemInstallDir() {
-        project.file(this.gemInstallDir)
+        projectOperations.file(this.gemInstallDir)
    }

    @TaskAction
@ -98,27 +101,27 @@ class GenerateGradleRb extends DefaultTask implements JRubyAwareTask {
        String path = classpathFromConfiguration(jruby.jrubyConfiguration).join(File.pathSeparator)
        String gemDir = getGemInstallDir().absolutePath
        String bootstrapName = getBaseName()
+        String bootstrapTemplate = BOOTSTRAP_TEMPLATE
        logger.info("GenerateGradleRb - source: ${source}, destination: ${destination}, baseName: ${baseName}")
-        project.copy {
-            from(source) {
-                /* In the case of this plugin existing in a zip (i.e. the
-             * plugin jar) our `source` will be a ZipTree, so we only want
-             * to pull in the template itself
-             */
-                include "**/${GenerateGradleRb.BOOTSTRAP_TEMPLATE}"
-            }
-            into destination
-            fileMode = 0755
-            includeEmptyDirs = false
-            rename BOOTSTRAP_TEMPLATE, bootstrapName
-            // Flatten the file into the destination directory so we don't copy
-            // the file into: ${destination}/META-INF/gradle-plugins/gradle.rb
-            eachFile { FileCopyDetails details ->
-                details.relativePath = new RelativePath(true, [details.name] as String[])
-            }
+        projectOperations.copy { CopySpec cs ->
+            cs.with {
+                // In the case of this plugin existing in a zip (i.e. the plugin jar) our `source` will be a ZipTree,
+                // so we only want to pull in the template itself
+                from(source).include "**/${bootstrapTemplate}"

-            filter ReplaceTokens, beginToken: '%%', endToken: '%%',
-                tokens: [GEMFOLDER: gemDir, JRUBYEXEC_CLASSPATH: path]
+                into destination
+                fileMode = 0755
+                includeEmptyDirs = false
+                rename bootstrapTemplate, bootstrapName
+                // Flatten the file into the destination directory so we don't copy
+                // the file into: ${destination}/META-INF/gradle-plugins/gradle.rb
+                eachFile { FileCopyDetails details ->
+                    details.relativePath = new RelativePath(true, [details.name] as String[])
+                }
+
+                filter ReplaceTokens, beginToken: '%%', endToken: '%%',
+                    tokens: [GEMFOLDER: gemDir, JRUBYEXEC_CLASSPATH: path]
+            }
        }
    }

@ -152,4 +155,5 @@ class GenerateGradleRb extends DefaultTask implements JRubyAwareTask {
    private Object destinationDir = project.projectDir
    private Object gemInstallDir
    private final JRubyPluginExtension jruby
+    private final ProjectOperations projectOperations
 }
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyExec.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyExec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -26,20 +26,23 @@ package com.github.jrubygradle
 import com.github.jrubygradle.api.core.JRubyAwareTask
 import com.github.jrubygradle.api.core.JRubyExecSpec
 import com.github.jrubygradle.internal.JRubyExecUtils
+import groovy.transform.CompileStatic
 import org.gradle.api.Task
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.JavaExec
 import org.gradle.api.tasks.Optional
+import org.gradle.api.tasks.TaskContainer
 import org.gradle.process.JavaExecSpec
 import org.gradle.util.GradleVersion
+import org.ysb33r.grolifant.api.core.ProjectOperations

 import java.util.concurrent.Callable

 import static com.github.jrubygradle.internal.JRubyExecUtils.prepareJRubyEnvironment
 import static com.github.jrubygradle.internal.JRubyExecUtils.resolveScript
-import static org.ysb33r.grolifant.api.StringUtils.stringize
+import static org.ysb33r.grolifant.api.v4.StringUtils.stringize

 /** Runs a ruby script using JRuby
 *
@ -48,6 +51,7 @@ import static org.ysb33r.grolifant.api.StringUtils.stringize
 * @author Christian Meier
 *
 */
+@CompileStatic
 class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {

    public static final String MAIN_CLASS = 'org.jruby.Main'
@ -62,35 +66,43 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {

    JRubyExec() {
        super()
-        super.setMain MAIN_CLASS
+        super.setMain(MAIN_CLASS)
        this.jruby = extensions.create(JRubyPluginExtension.NAME, JRubyPluginExtension, this)
+        this.projectOperations = ProjectOperations.create(project)
+        this.tasks = project.tasks

-        inputs.property 'jrubyver', {
+        inputs.property 'jrubyver', { JRubyPluginExtension jruby ->
            jruby.jrubyVersion
-        }
+        }.curry(this.jruby)

-        inputs.property 'gemConfiguration', {
+        inputs.property 'gemConfiguration', { JRubyPluginExtension jruby ->
            jruby.gemConfiguration
-        }
+        }.curry(this.jruby)

        if (GradleVersion.current() >= GradleVersion.version('4.10')) {
-            dependsOn(project.provider({ JRubyPluginExtension jpe ->
-                project.tasks.getByName(jpe.gemPrepareTaskName)
-            }.curry(this.jruby)))
+            dependsOn(project.provider({ JRubyPluginExtension jpe, TaskContainer t ->
+                t.getByName(jpe.gemPrepareTaskName)
+            }.curry(this.jruby, this.tasks)))
        } else {
            project.afterEvaluate({ Task t, JRubyPluginExtension jpe ->
                t.dependsOn(jpe.gemPrepareTaskName)
            }.curry(this, this.jruby))
        }
+
+        Callable<File> resolveGemWorkDir = { JRubyPluginExtension jpe, TaskContainer t ->
+            ((JRubyPrepare) t.getByName(jpe.gemPrepareTaskName)).outputDir
+        }.curry(jruby, tasks) as Callable<File>
+
+        this.gemWorkDir = project.provider(resolveGemWorkDir)
    }

    /** Script to execute.
-     * @return The path to the script (or nul if not set)
+     * @return The path to the script (or {@code null} if not set)
     */
    @Optional
    @Input
    File getScript() {
-        resolveScript(project, this.script)
+        resolveScript(projectOperations, this.script)
    }

    /** Returns a list of script arguments
@ -174,11 +186,7 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {
     * @return Provider of GEM working directory.
     */
    Provider<File> getGemWorkDir() {
-        Callable<File> resolveGemWorkDir = { JRubyPluginExtension jpe ->
-            ((JRubyPrepare) project.tasks.getByName(jpe.gemPrepareTaskName)).outputDir
-        }.curry(jruby) as Callable<File>
-
-        project.provider(resolveGemWorkDir)
+        this.gemWorkDir
    }

    /** If it is required that a JRubyExec task needs to be executed with a different version of JRuby that the
@ -189,7 +197,7 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {
     */
    @Deprecated
    String getJrubyVersion() {
-        deprecated('Use jruby.getJrubyVersion rather getJrubyVersion()')
+        deprecated('Use jruby.getJrubyVersion() rather getJrubyVersion()')
        jruby.jrubyVersion
    }

@ -254,7 +262,7 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {
    void exec() {
        File gemDir = getGemWorkDir().get()
        setEnvironment prepareJRubyEnvironment(this.environment, this.inheritRubyEnv, gemDir)
-        super.classpath jruby.jrubyConfiguration
+        super.classpath(jruby.jrubyConfiguration)
        super.setArgs(getArgs())
        super.exec()
    }
@ -263,11 +271,12 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {
     *
     * There are three modes of behaviour
     * <ul>
-     *   <li> script set. no jrubyArgs, or jrubyArgs does not contain {@code -S} - Normal way to execute script. A check
+     *   <li> script set. no jrubyArgs, or jrubyArgs does not contain {@code -S}: normal way to execute script. A check
     *   whether the script exists will be performed.
-     *   <li> script set. jrubyArgs contains {@code -S} - If script is not absolute, no check will be performed to see
+     *   <li> script set. jrubyArgs contains {@code -S}: if script is not absolute, no check will be performed to see
     *   if the script exists and will be assumed that the script can be found using the default ruby path mechanism.
-     *   <li> script not set, but jrubyArgs set - Set up to execute jruby with no script. This should be a rarely used otion.
+     *   <li> script not set, but jrubyArgs set: set up to execute jruby with no script. This should be a rarely used
+     *   option.
     * </ul>
     *
     * @throw {@code org.gradle.api.InvalidUserDataException} if mode of behaviour cannot be determined.
@ -315,5 +324,8 @@ class JRubyExec extends JavaExec implements JRubyAwareTask, JRubyExecSpec {
    private Object script
    private final List<Object> scriptArgs = []
    private final List<Object> jrubyArgs = []
+    private final ProjectOperations projectOperations
+    private final TaskContainer tasks
+    private final Provider<File> gemWorkDir

 }
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPlugin.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPlugin.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -32,7 +32,7 @@ import org.gradle.api.Project
 import org.gradle.api.Task
 import org.gradle.api.artifacts.Configuration

-import static org.ysb33r.grolifant.api.TaskProvider.registerTask
+import static org.ysb33r.grolifant.api.v4.TaskProvider.registerTask

 /** Base plugin for JRuby.
 *
@ -62,7 +62,7 @@ class JRubyPlugin implements Plugin<Project> {
        JRubyExecDelegate.addToProject(project, PROJECT_JRUBYEXEC)

        registerTask(
-            project,
+            project.tasks,
            'generateGradleRb',
            GenerateGradleRb
        ).configure(generateGradleRbConfiguration(project))
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPluginExtension.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPluginExtension.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -29,16 +29,27 @@ import com.github.jrubygradle.internal.JRubyPrepareUtils
 import groovy.transform.CompileStatic
 import org.gradle.api.Action
 import org.gradle.api.Project
+import org.gradle.api.Task
+import org.gradle.api.UnknownTaskException
 import org.gradle.api.artifacts.Configuration
+import org.gradle.api.artifacts.ConfigurationContainer
 import org.gradle.api.artifacts.Dependency
 import org.gradle.api.artifacts.ResolutionStrategy
+import org.gradle.api.artifacts.dsl.DependencyHandler
+import org.gradle.api.artifacts.dsl.RepositoryHandler
+import org.gradle.api.logging.Logger
 import org.gradle.api.plugins.ExtensionAware
 import org.gradle.api.provider.Provider
-import org.ysb33r.grolifant.api.AbstractCombinedProjectTaskExtension
+import org.gradle.api.provider.ProviderFactory
+import org.gradle.api.tasks.TaskContainer
+import org.ysb33r.grolifant.api.core.ProjectOperations
+import org.ysb33r.grolifant.api.v4.AbstractCombinedProjectTaskExtension
+import org.ysb33r.grolifant.api.v4.TaskProvider

 import java.util.concurrent.Callable

-import static org.ysb33r.grolifant.api.StringUtils.stringize
+import static com.github.jrubygradle.JRubyPlugin.TASK_GROUP_NAME
+import static org.ysb33r.grolifant.api.v4.StringUtils.stringize

 /**
 * Class providing the jruby DSL extension to the Gradle build script.
@ -50,7 +61,7 @@ import static org.ysb33r.grolifant.api.StringUtils.stringize
 */
@CompileStatic
 class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
-    public static final String DEFAULT_JRUBY_VERSION = '9.2.7.0'
+    public static final String DEFAULT_JRUBY_VERSION = '9.2.9.0'

    public static final String NAME = 'jruby'

@ -60,6 +71,14 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
     */
    JRubyPluginExtension(Project p) {
        super(p)
+        this.jrubyVersion = DEFAULT_JRUBY_VERSION
+        this.repositories = p.repositories
+        this.dependencies = p.dependencies
+        this.configurations = p.configurations
+        this.providers = p.providers
+        this.logger = p.logger
+        this.tasks = p.tasks
+        this.projectOperations = ProjectOperations.create(p)
    }

    /** Task extension constructor
@ -70,6 +89,13 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
     */
    JRubyPluginExtension(JRubyAwareTask t) {
        super(t, NAME)
+        this.repositories = t.project.repositories
+        this.dependencies = t.project.dependencies
+        this.configurations = t.project.configurations
+        this.providers = t.project.providers
+        this.logger = t.project.logger
+        this.tasks = t.project.tasks
+        this.projectOperations = ProjectOperations.create(t.project)
    }

    /** The default version of jruby that will be used.
@ -86,7 +112,8 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {

    /** Set a new JRuby version to use.
     *
-     * @param v New version to be used. Can be of anything that be be resolved by {@link StringUtils.stringize ( Object o )}
+     * @param v New version to be used. Can be of anything that be be resolved by
+     * {@link org.ysb33r.grolifant.api.v4.StringUtils#stringize ( Object o )}
     *
     * @since 2.0
     */
@ -96,7 +123,8 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {

    /** Set a new JRuby version to use.
     *
-     * @param v New version to be used. Can be of anything that be be resolved by {@link StringUtils.stringize ( Object o )}
+     * @param v New version to be used. Can be of anything that be be resolved by
+     * {@link org.ysb33r.grolifant.api.v4.StringUtils#stringize ( Object o )}
     *
     * @since 2.0
     */
@ -152,8 +180,8 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
                        'It is recommended that you explicitly declare your repositories rather than rely on ' +
                        'this functionality.'
                )
-                project.repositories.jcenter()
-                ((ExtensionAware) (project.repositories)).extensions.getByType(RepositoryHandlerExtension).gems()
+                repositories.jcenter()
+                ((ExtensionAware) (repositories)).extensions.getByType(RepositoryHandlerExtension).gems()
            } else {
                deprecated(
                    'jruby.defaultRepositories are no longer switched on by default - you can safely remove ' +
@ -206,7 +234,7 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {

        List<Dependency> deps = [createDependency(jrubyCompleteDep)]

-        Configuration configuration = project.configurations.detachedConfiguration(
+        Configuration configuration = configurations.detachedConfiguration(
            deps.toArray() as Dependency[]
        )

@ -220,16 +248,16 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
    /** Sets the GEM configuration.
     *
     * @param c Configuration instance, Character sequence as configuration name, or a {@code Provider<Configuration}.
-             */
+              */
    void setGemConfiguration(final Object c) {
        switch (c) {
            case Configuration:
-                this.gemConfiguration = project.provider({ -> c } as Callable<Configuration>)
+                this.gemConfiguration = providers.provider({ -> c } as Callable<Configuration>)
                registerPrepareTask(((Configuration) c).name)
                break
            case CharSequence:
                this.gemConfiguration = project.provider(
-                    { -> project.configurations.getByName(c.toString()) } as Callable<Configuration>
+                    { -> configurations.getByName(c.toString()) } as Callable<Configuration>
                )
                registerPrepareTask(c.toString())
                break
@ -247,7 +275,7 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
    /** Declarative way of setting the GEM configuration.
     *
     * @param c Configuration instance, Character sequence as configuration name, or a {@code Provider<Configuration}.
-             */
+              */
    void gemConfiguration(final Object c) {
        setGemConfiguration(c)
    }
@ -305,29 +333,58 @@ class JRubyPluginExtension extends AbstractCombinedProjectTaskExtension {
    }

    private void deprecated(String msg) {
-        project.logger.info("Deprecated feature in ${NAME} extension. ${msg}")
+        logger.info("Deprecated feature in ${NAME} extension. ${msg}")
    }

    private Dependency createDependency(final String notation, final Closure configurator = null) {
        if (configurator) {
-            project.dependencies.create(notation, configurator)
+            dependencies.create(notation, configurator)
        } else {
-            project.dependencies.create(notation)
+            dependencies.create(notation)
        }
    }

    private void registerPrepareTask(final String configurationName) {
-        JRubyPrepareUtils.registerPrepareTask(project, configurationName)
-        this.gemPrepareTaskName = JRubyPrepareUtils.taskName(configurationName)
+        final String taskName = JRubyPrepareUtils.taskName(configurationName)
+        final String gemDir = JRubyPrepareUtils.gemRelativePath(configurationName)
+
+        try {
+            TaskProvider.taskByName(tasks, taskName)
+        } catch (UnknownTaskException e) {
+            TaskProvider<JRubyPrepare> prepare = TaskProvider.registerTask(tasks, taskName, JRubyPrepare)
+            ProjectOperations po = this.projectOperations
+            Action<JRubyPrepare> configurator = new Action<JRubyPrepare>() {
+                void execute(JRubyPrepare jp) {
+                    jp.with {
+                        group = TASK_GROUP_NAME
+                        description = "Prepare the gems/jars from the `${configurationName}` dependencies"
+                        dependencies(project.configurations.getByName(configurationName))
+                        outputDir =  { ->
+                            po.buildDirDescendant(gemDir)
+                        }
+                    }
+                }
+            }
+            prepare.configure(configurator as Action<? extends Task>)
+            prepare
+        }
+
+        this.gemPrepareTaskName = taskName//JRubyPrepareUtils.taskName(configurationName)
    }

    private static final String JRUBY_COMPLETE_DEPENDENCY = 'org.jruby:jruby-complete'
-    private Object jrubyVersion = DEFAULT_JRUBY_VERSION
+    private Object jrubyVersion

    private Provider<Configuration> gemConfiguration
    private String gemPrepareTaskName
    private boolean taskResolutionStrategiesOnly = false
    private final List<Action<ResolutionStrategy>> resolutionsStrategies = []
-
+    private final ProjectOperations projectOperations
+    private final RepositoryHandler repositories
+    private final ConfigurationContainer configurations
+    private final DependencyHandler dependencies
+    private final ProviderFactory providers
+    private final TaskContainer tasks
+    private final Logger logger
    private boolean defaultRepositoriesCalled = false
 }
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPrepare.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/JRubyPrepare.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -26,6 +26,9 @@ package com.github.jrubygradle
 import com.github.jrubygradle.api.core.AbstractJRubyPrepare
 import com.github.jrubygradle.internal.JRubyExecUtils
 import groovy.transform.CompileStatic
+import org.gradle.api.provider.Provider
+
+import java.util.concurrent.Callable

 /** Task for preparing a project-local installation of GEMs & JARs.
 *
@ -39,6 +42,9 @@ class JRubyPrepare extends AbstractJRubyPrepare {
    JRubyPrepare() {
        super()
        this.jruby = extensions.create(JRubyPluginExtension.NAME, JRubyPluginExtension, this)
+        this.jrubyJarLocation = project.provider({ JRubyPluginExtension jrubyExt ->
+            JRubyExecUtils.jrubyJar(jrubyExt.jrubyConfiguration)
+        }.curry(this.jruby) as Callable<File>)
    }

    /** Location of {@code jruby-complete} JAR.
@ -46,10 +52,22 @@ class JRubyPrepare extends AbstractJRubyPrepare {
     * @return Path on local filesystem
     */
    @Override
-    protected File getJrubyJarLocation() {
-        JRubyExecUtils.jrubyJar(this.jruby.jrubyConfiguration)
+    protected Provider<File> getJrubyJarLocation() {
+        this.jrubyJarLocation
+    }
+
+    /** Version of JRuby to be used.
+     *
+     * This method should not resolve any files to obtain the version.
+     *
+     * @return Intended version of JRuby.
+     */
+    @Override
+    protected String getProposedJRubyVersion() {
+        jruby.jrubyVersion
    }

    private final JRubyPluginExtension jruby
+    private final Provider<File> jrubyJarLocation
 }

--- a/base-plugin/src/main/groovy/com/github/jrubygradle/UninitialisedParameterException.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/UninitialisedParameterException.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyExecDelegate.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyExecDelegate.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -24,19 +24,24 @@
 package com.github.jrubygradle.internal

 import com.github.jrubygradle.JRubyPluginExtension
+import com.github.jrubygradle.JRubyPrepare
 import com.github.jrubygradle.api.core.JRubyExecSpec
+import groovy.transform.CompileStatic
 import org.gradle.api.Action
 import org.gradle.api.Project
 import org.gradle.api.file.FileCollection
+import org.gradle.api.plugins.ExtensionContainer
+import org.gradle.api.tasks.TaskContainer
 import org.gradle.process.ExecResult
 import org.gradle.process.JavaExecSpec
-import org.ysb33r.grolifant.api.ClosureUtils
+import org.ysb33r.grolifant.api.core.ProjectOperations
+import org.ysb33r.grolifant.api.v4.ClosureUtils

 import static com.github.jrubygradle.JRubyExec.MAIN_CLASS
 import static com.github.jrubygradle.internal.JRubyExecUtils.buildArgs
 import static com.github.jrubygradle.internal.JRubyExecUtils.prepareJRubyEnvironment
 import static com.github.jrubygradle.internal.JRubyExecUtils.resolveScript
-import static org.ysb33r.grolifant.api.StringUtils.stringize
+import static org.ysb33r.grolifant.api.v4.StringUtils.stringize

 /** Delegate for running JRuby using {@code project.jrubyexec}.
 *
@ -44,6 +49,7 @@ import static org.ysb33r.grolifant.api.StringUtils.stringize
 * @author R Tyler Croy
 *
 */
+@CompileStatic
 class JRubyExecDelegate {

    static void addToProject(final Project project, final String name) {
@ -64,44 +70,54 @@ class JRubyExecDelegate {
    }

    ExecResult call(@DelegatesTo(JRubyExecSpec) Closure cfg) {
-        project.javaexec { JavaExecSpec javaExecSpec ->
-            ExecSpec execSpec = new ExecSpec(project, javaExecSpec)
+        projectOperations.javaexec { JavaExecSpec javaExecSpec ->
+            ExecSpec execSpec = new ExecSpec(projectOperations, javaExecSpec)
            ClosureUtils.configureItem(execSpec, cfg)
            finaliseJavaExecConfiguration(execSpec, javaExecSpec)
        }
    }

    ExecResult call(Action<JRubyExecSpec> cfg) {
-        project.javaexec { JavaExecSpec javaExecSpec ->
-            ExecSpec execSpec = new ExecSpec(project, javaExecSpec)
-            cfg.execute(spec)
+        projectOperations.javaexec { JavaExecSpec javaExecSpec ->
+            ExecSpec execSpec = new ExecSpec(projectOperations, javaExecSpec)
+            cfg.execute(execSpec)
            finaliseJavaExecConfiguration(execSpec, javaExecSpec)
        }
    }

    void finaliseJavaExecConfiguration(ExecSpec execSpec, JavaExecSpec javaExecSpec) {
-        JRubyPluginExtension jruby = project.extensions.getByType(JRubyPluginExtension)
+        JRubyPluginExtension jruby = extensions.getByType(JRubyPluginExtension)
        javaExecSpec.with {
            main = MAIN_CLASS
            classpath = jruby.jrubyConfiguration
-            args = buildArgs([], execSpec.jrubyArgs, execSpec.script, execSpec.scriptArgs)
+            args = buildArgs(
+                [],
+                execSpec.jrubyArgs as List<Object>,
+                execSpec.script,
+                execSpec.scriptArgs as List<Object>
+            )
+
            environment = prepareJRubyEnvironment(
                environment,
                execSpec.inheritRubyEnv,
-                project.tasks.getByName(jruby.gemPrepareTaskName).outputDir
+                ((JRubyPrepare)tasks.getByName(jruby.gemPrepareTaskName)).outputDir
            )
        }
    }

    private JRubyExecDelegate(Project project) {
-        this.project = project
+        this.projectOperations = ProjectOperations.find(project)
+        this.tasks = project.tasks
+        this.extensions = project.extensions
    }

-    private final Project project
+    private final ProjectOperations projectOperations
+    private final TaskContainer tasks
+    private final ExtensionContainer extensions

    private static class ExecSpec implements JRubyExecSpec {
-        ExecSpec(Project project, JavaExecSpec spec) {
-            this.project = project
+        ExecSpec(ProjectOperations projectOperations, JavaExecSpec spec) {
+            this.projectOperations = projectOperations
            this.javaExecSpec = spec
        }

@ -139,12 +155,12 @@ class JRubyExecDelegate {

        @Override
        void script(Object scr) {
-            this.script = resolveScript(project, scr)
+            this.script = resolveScript(projectOperations, scr)
        }

        @Override
        void setScript(Object scr) {
-            this.script = resolveScript(project, scr)
+            this.script = resolveScript(projectOperations, scr)
        }

        @Override
@ -195,6 +211,6 @@ class JRubyExecDelegate {
        private final List<String> jrubyArgs = []
        private final @Delegate
        JavaExecSpec javaExecSpec
-        private final Project project
+        private final ProjectOperations projectOperations
    }
 }
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyExecUtils.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyExecUtils.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -24,20 +24,17 @@
 package com.github.jrubygradle.internal

 import com.github.jrubygradle.JRubyPlugin
-import com.github.jrubygradle.JRubyPluginExtension
-import com.github.jrubygradle.api.gems.GemOverwriteAction
-import com.github.jrubygradle.api.gems.GemUtils
 import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
 import org.gradle.api.InvalidUserDataException
-import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.ysb33r.grolifant.api.OperatingSystem
-import org.ysb33r.grolifant.api.StringUtils
+import org.ysb33r.grolifant.api.core.ProjectOperations
+import org.ysb33r.grolifant.api.v4.StringUtils

 import java.util.regex.Matcher

-import static org.ysb33r.grolifant.api.StringUtils.stringize
+import static org.ysb33r.grolifant.api.v4.StringUtils.stringize

 /** Utilities for preparation or executing JRuby.
 *
@ -120,17 +117,17 @@ class JRubyExecUtils {

    /** Resolves a script location object.
     *
-     * @paream project Project context for script.
+     * @paream project Project operations for script.
     * @param script Script to resolve.
     * @return Resolved script location. Will be {@code null} if {@code script == null},
     */
-    static File resolveScript(Project project, Object script) {
+    static File resolveScript(ProjectOperations projectOperations, Object script) {
        if (script) {
            File intermediate = script instanceof File ? (File) script : new File(stringize(script))
            if (intermediate.absolute) {
                intermediate
            } else {
-                intermediate.parentFile ? project.file(script) : intermediate
+                intermediate.parentFile ? projectOperations.file(script) : intermediate
            }
        } else {
            null
@ -217,58 +214,45 @@ class JRubyExecUtils {
        return path.absolutePath + File.pathSeparatorChar + originalPath
    }

-    /**
-     * Update the given configuration on the project with the appropriate versions
-     * of JRuby and supplemental dependencies to execute JRuby successfully
-     */
-    static void updateJRubyDependenciesForConfiguration(Project project, String configuration, String version) {
-        Configuration c = project.configurations.findByName(configuration)
-
-        /* Only define this dependency if we don't already have it */
-        if (!(c.dependencies.find { it.name == JRUBY_COMPLETE })) {
-            project.dependencies.add(configuration, "org.jruby:jruby-complete:${version}")
-        }
-    }
-
-    /**
-     * Prepare the Ruby and Java dependencies for the configured configuration
-     *
-     * This method will determine the appropriate dependency overwrite behavior
-     * from the Gradle invocation. In effect, if the --refresh-dependencies flag
-     * is used, already installed gems will be overwritten.
-     *
-     * @param project The associated Gradle project.
-     * @param gemWorkDir THe GEM unpack/working directory.
-     * @param jruby The associated JRuby project or task extension.
-     * @param gemConfiguration Configuration which contains GEMs for unpacking.
-     * @param overwrite Overwrite mode.
-     *
-     * @since 2.0
-     */
-    static void prepareDependencies(
-        Project project,
-        File gemWorkDir,
-        JRubyPluginExtension jruby,
-        Configuration gemConfiguration,
-        GemOverwriteAction overwrite
-    ) {
-        File gemDir = gemWorkDir.absoluteFile
-
-        gemDir.mkdirs()
-
-        GemUtils.extractGems(
-            project,
-            jruby.jrubyConfiguration,
-            gemConfiguration,
-            gemDir,
-            overwrite
-        )
-        GemUtils.setupJars(
-            gemConfiguration,
-            gemDir,
-            overwrite
-        )
-    }
+//    /**
+//     * Prepare the Ruby and Java dependencies for the configured configuration
+//     *
+//     * This method will determine the appropriate dependency overwrite behavior
+//     * from the Gradle invocation. In effect, if the --refresh-dependencies flag
+//     * is used, already installed gems will be overwritten.
+//     *
+//     * @param project The associated Gradle project.
+//     * @param gemWorkDir THe GEM unpack/working directory.
+//     * @param jruby The associated JRuby project or task extension.
+//     * @param gemConfiguration Configuration which contains GEMs for unpacking.
+//     * @param overwrite Overwrite mode.
+//     *
+//     * @since 2.0
+//     */
+//    static void prepareDependencies(
+//        Project project,
+//        File gemWorkDir,
+//        JRubyPluginExtension jruby,
+//        Configuration gemConfiguration,
+//        GemOverwriteAction overwrite
+//    ) {
+//        File gemDir = gemWorkDir.absoluteFile
+//
+//        gemDir.mkdirs()
+//
+//        GemUtils.extractGems(
+//            project,
+//            jruby.jrubyConfiguration,
+//            gemConfiguration,
+//            gemDir,
+//            overwrite
+//        )
+//        GemUtils.setupJars(
+//            gemConfiguration,
+//            gemDir,
+//            overwrite
+//        )
+//    }

    /** Prepare en environment which can be used to execute JRuby.
     *
--- a/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyPrepareUtils.groovy
+++ b/base-plugin/src/main/groovy/com/github/jrubygradle/internal/JRubyPrepareUtils.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,17 +23,10 @@
 */
 package com.github.jrubygradle.internal

-import com.github.jrubygradle.JRubyPrepare
 import groovy.transform.CompileStatic
-import org.gradle.api.Action
-import org.gradle.api.Project
-import org.gradle.api.Task
-import org.gradle.api.UnknownTaskException
-import org.ysb33r.grolifant.api.TaskProvider

 import static com.github.jrubygradle.JRubyPlugin.DEFAULT_CONFIGURATION
 import static com.github.jrubygradle.JRubyPlugin.DEFAULT_PREPARE_TASK
-import static com.github.jrubygradle.JRubyPlugin.TASK_GROUP_NAME

 /** Utilities to deal with JRubPrepare tasks
 *
@ -56,44 +49,11 @@ class JRubyPrepareUtils {

    /** GEM working (unpack) relative path by convention.
     *
-     * @param configurationName  Name of a GEM configuration.
+     * @param configurationName Name of a GEM configuration.
     * @return Associated relative path to project directory.
     */
    static String gemRelativePath(String configurationName) {
        configurationName == DEFAULT_CONFIGURATION ? '.gems' :
            ".gems-${configurationName}"
    }
-
-    /** Registers (or creates) a JRUbyPrepare tasks based upon a configuration name
-     *
-     * @param project Associated project
-     * @param configurationName
-     * @return Grolifant {@code TaskProvider}.
-     */
-    static TaskProvider<JRubyPrepare> registerPrepareTask(
-        final Project project,
-        final String configurationName
-    ) {
-        final String taskName = taskName(configurationName)
-        final String gemDir = gemRelativePath(configurationName)
-
-        try {
-            TaskProvider.taskByName(project, taskName)
-        } catch (UnknownTaskException e) {
-            TaskProvider<JRubyPrepare> prepare = TaskProvider.registerTask(project, taskName, JRubyPrepare)
-            Action<JRubyPrepare> configurator = new Action<JRubyPrepare>() {
-                void execute(JRubyPrepare jp) {
-                    jp.with {
-                        group = TASK_GROUP_NAME
-                        description = "Prepare the gems/jars from the `${configurationName}` dependencies"
-                        dependencies(project.configurations.getByName(configurationName))
-                        outputDir { "${project.buildDir}/${gemDir}" }
-                    }
-                }
-            }
-            prepare.configure(configurator as Action<? extends Task>)
-            prepare
-        }
-
-    }
 }
--- a/base-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.base.properties
+++ b/base-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.base.properties
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyExecTaskSpec.groovy
+++ b/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyExecTaskSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyPluginExtensionSpec.groovy
+++ b/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyPluginExtensionSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyPluginSpec.groovy
+++ b/base-plugin/src/test/groovy/com/github/jrubygradle/JRubyPluginSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/groovy/com/github/jrubygradle/internal/JRubyExecUtilsSpec.groovy
+++ b/base-plugin/src/test/groovy/com/github/jrubygradle/internal/JRubyExecUtilsSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/resources/helloWorld.rb
+++ b/base-plugin/src/test/resources/helloWorld.rb
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/base-plugin/src/test/resources/logback-test.xml
+++ b/base-plugin/src/test/resources/logback-test.xml
@ -1,6 +1,6 @@
 <!--

-    Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+    Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
        Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.

    Permission is hereby granted, free of charge, to any person obtaining
--- a/build.gradle
+++ b/build.gradle
@ -25,6 +25,7 @@ allprojects {
    targetCompatibility = '1.8'

    ext {
+        olderJRubyVersion = '9.2.1.0'
        spockVersion = "org.spockframework:spock-core:1.2-groovy-2.4"
        pluginExtraText = (version.contains('-alpha') || version.contains('-beta')) ?
            '(If you need a production-ready version of the JRuby/Gradle plugin use a 1.7.x release instead)': ''
@ -32,12 +33,10 @@ allprojects {
 }

 subprojects {
-
    apply plugin: 'maven'

    repositories {
        jcenter()
-        maven { url torqueboxProxy }
    }

    if (project.name != 'docs') {
@ -55,8 +54,8 @@ subprojects {
        dependencies {
            compile localGroovy()
            compile gradleApi()
-            compile 'org.ysb33r.gradle:grolifant:0.12'
-            gradleTestRuntime 'org.ysb33r.gradle:grolifant:0.12'
+            compile "org.ysb33r.gradle:grolifant50:${grolifantVersion}"
+            gradleTestRuntime "org.ysb33r.gradle:grolifant50:${grolifantVersion}"
        }

        codenarc {
@ -79,10 +78,17 @@ subprojects {
        gradleTest {
            // https://github.com/jruby-gradle/jruby-gradle-plugin/issues/346
            if (JavaVersion.current().java11) {
-                versions '5.0', '5.4.1'
+                versions '5.0', '5.4.1', '6.0.1', '6.7'
            } else {
-                versions '4.2', '4.10.2', '5.3.1'
+                versions '4.10.2', '5.3.1', '6.0.1', '6.7'
+
+                if(project.name == 'jruby-gradle-core-plugin' ) {
+                    versions '4.3'
+                } else {
+                    versions '4.9'
+                }
            }
+
            dependsOn jar
        }

@ -100,10 +106,8 @@ subprojects {
            ideReport.enabled = true
            ideReport.destination = file( "${project.codenarc.reportsDir}/${reportName}.ide.txt")
        }
-
    }

-
    idea {
        module {
            downloadJavadoc = true
@ -114,6 +118,6 @@ subprojects {

 task release(type: Exec) {
    description 'Create and upload a release'
-    dependsOn subprojects.collect { ":${it.name}:bintrayUpload" }
+    dependsOn subprojects.findAll { it.name != 'docs' }.collect { ":${it.name}:bintrayUpload" }
    commandLine 'git', 'tag', "v${project.version}"
 }
--- a/core-plugin/README.adoc
+++ b/core-plugin/README.adoc
@ -8,3 +8,65 @@ This plugin offers the following functionality:
 * Conversion between GEM-style and Ivy-style dependencies notations.
 * An abstract task class (`AbstractJRubyPrepare`) for preparing local GEM + JAR installations.

+== Getting Started
+
+=== Compatibility
+
+This plugin requires link:http://gradle.org[Gradle] 4.3 or better
+
+=== Installing
+
+.build.gradle
+[source, groovy]
+----
+plugins {
+  id 'com.github.jruby-gradle.core' version 'VERSION-OF-PLUGIN'
+}
+----
+
+=== Adding repositories
+
+.build.gradle
+[source,groovy]
+----
+repositories {
+    ruby.gems() // <1>
+    ruby.gems { // <2>
+        prerelease = true
+    }
+    ruby.gems('https://foo.bar') // <3>
+    ruby.gems('acme-rubygems', 'https://foo.bar') // <4>
+
+    ruby.mavengems() // <5>
+    ruby.mavengems('https://foo.bar') // <6>
+    ruby.mavengems('acme-rubygems', 'https://foo.bar') // <7>
+}
+----
+<1> Proxy rubygems.org directly and use `rubygems` as the Maven coordinate group.
+<2> Proxy rubygems.org directly and allow prerelease GEMs to be considered. Use `rubygems` as the Maven coordinate group.
+<3> Proxy a custom rubygems repository.
+<4> Proxy a custom rubygems repository and assign a custom Maven coordinate group.
+<5> Adds a Maven repository that uses the one official supported by the JRuby group. In order to use this, GEM dependencies should all be placed in the `rubygems` group.
+<6> Adds a custom Maven repository that will proxy a GEMs repository. In order to use this, GEM dependencies should all be placed in the `rubygems` group.
+<7> Adds a custom Maven repository that will proxy a GEMs repository, but allocate a custom dedicated Maven group. This is useful where you would want to use both the public repository and your own, but you want to save network query traffic, by only query repositories where you know the dependencies should exist.
+
+== Advanced
+
+=== Customising GEM resolving
+
+By default the `rubygems` configuration and others added via `ruby.mavengems()` and `ruby.gems()` will have additional resolving strategies applied that mimicks GEM behaviour rather then Gradle behaviour. It is possible to customise this behaviour.
+
+.build.gradle
+[source,groovy]
+----
+gemResolverStrategy {
+  excludeConfigurations 'foo', 'bar'  // <1>
+  excludeModule 'foo.*' // <2>
+  excludeModule 'foo.*', /1\.2.*/ // <3>
+  useGemVersionResolver 'gems2'
+}
+----
+<1> Exclude configurations `foo` and `bar` from being considered for GEM resolver strategies.
+<2> Exclude module that matches regular expression from GEM resolver strategies.
+<3> Exclude module and version that matches regular expression from GEM resolver strategies.
+<4> Apply GEM resolver strategies to a specific configuration.
--- a/core-plugin/build.gradle
+++ b/core-plugin/build.gradle
@ -36,8 +36,15 @@ bintray {
            vcsTag = "v${project.version}"
            attributes = ['gradle-plugin': 'com.github.jruby-gradle.core:com.github.jruby-gradle:jruby-gradle-core-plugin']
            desc = 'This plugin provides some core dependency resolution for JRuby/Gradle'
-
        }
    }
 }
+
+
+processResources {
+    filesMatching '**/com.jrubygradle.core-plugin.version.properties', {
+        expand VERSION : project.version
+    }
+}
+
 bintrayUpload.dependsOn assemble
--- a/core-plugin/src/integTest/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServerIntegrationSpec.groovy
+++ b/core-plugin/src/integTest/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServerIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -30,6 +30,7 @@ import org.junit.rules.TemporaryFolder
 import spock.lang.IgnoreIf
 import spock.lang.Issue
 import spock.lang.Specification
+import spock.lang.Unroll

 import java.util.regex.Pattern

@ -185,7 +186,7 @@ class IvyXmlProxyServerIntegrationSpec extends Specification {
        build()

        then:
-        findFiles (~/^asciidoctor-pdf.*\.gem$/).size() == 3
+        findFiles(~/^asciidoctor-pdf.*\.gem$/).size() == 3
    }

    @Issue('https://github.com/jruby-gradle/jruby-gradle-plugin/issues/380')
@ -208,6 +209,21 @@ class IvyXmlProxyServerIntegrationSpec extends Specification {
        findFiles ~/^bibtex-ruby-4.4.7.gem$/
    }

+    void 'Resolve a transitive dependency which is jruby-specific'() {
+        setup:
+        withBuildFile '''
+        dependencies {
+            something 'rubygems:rubocop:0.77.0'
+        }
+        '''
+
+        when:
+        build()
+
+        then:
+        findFiles ~/^jaro_winkler-1.5.\d+-java.gem$/
+    }
+
    private List<File> findFiles(Pattern pat) {
        new File(projectDir, 'build/something').listFiles(new FilenameFilter() {
            @Override
@ -228,14 +244,16 @@ class IvyXmlProxyServerIntegrationSpec extends Specification {
            .build()
    }

-    private void withBuildFile(String content) {
+    private void withBuildFile(String content, boolean prerelease = false) {
        buildFile.text = """
        plugins {
            id 'com.github.jruby-gradle.core'
        }

        repositories {
-            ruby.gems()
+            ruby.gems {
+                prerelease = ${prerelease}
+            }
        }

        configurations {
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/AbstractJRubyPrepare.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/AbstractJRubyPrepare.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -29,10 +29,13 @@ import groovy.transform.CompileStatic
 import org.gradle.api.DefaultTask
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.file.FileCollection
+import org.gradle.api.provider.Provider
+import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputFiles
 import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.TaskAction
+import org.ysb33r.grolifant.api.core.ProjectOperations

 import static com.github.jrubygradle.api.gems.GemOverwriteAction.SKIP
 import static com.github.jrubygradle.api.gems.GemUtils.extractGems
@ -50,13 +53,18 @@ import static com.github.jrubygradle.api.gems.GemUtils.setupJars
 abstract class AbstractJRubyPrepare extends DefaultTask implements JRubyAwareTask {

    protected AbstractJRubyPrepare() {
+        this.projectOperations = ProjectOperations.find(project)
+        this.outputDir = {
+            ProjectOperations projectOperations -> projectOperations.buildDirDescendant('.gems')
+        }.curry(this.projectOperations)
        outputs.dir({ AbstractJRubyPrepare t -> new File(t.getOutputDir(), 'gems') }.curry(this))
    }

    /** Target directory for GEMs. Extracted GEMs will end up in {@code outputDir + "/gems"}
     */
+    @Internal
    File getOutputDir() {
-        project.file(this.outputDir)
+        projectOperations.file(this.outputDir)
    }

    /** Sets the output directory
@ -81,7 +89,7 @@ abstract class AbstractJRubyPrepare extends DefaultTask implements JRubyAwareTas
     */
    @InputFiles
    FileCollection gemsAsFileCollection() {
-        return GemUtils.getGems(project.files(this.dependencies))
+        return GemUtils.getGems(projectOperations.files(this.dependencies))
    }

    @Internal
@ -96,16 +104,38 @@ abstract class AbstractJRubyPrepare extends DefaultTask implements JRubyAwareTas
        this.dependencies.addAll(f.toList())
    }

+    /**
+     *
+     * @return Configuration Cache safe project operations service.
+     *
+     * @since 2.1.0
+     */
+    protected ProjectOperations getProjectOperations() {
+        this.projectOperations
+    }
+
    /** Location of {@code jruby-complete} JAR.
     *
     * @return Path on local filesystem
     */
-    abstract protected File getJrubyJarLocation()
+    @Internal
+    abstract protected Provider<File> getJrubyJarLocation()
+
+    /** Version of JRuby to be used.
+     *
+     * This method should not resolve any files to obtain the version.
+     *
+     * @return Intended version of JRuby. Can be {@code null} if the version
+     * is indirectly inferred via configuration.
+     */
+    @Input
+    @Optional
+    abstract protected String getProposedJRubyVersion()

    @TaskAction
    void exec() {
        File out = getOutputDir()
-        File jrubyJar = jrubyJarLocation
+        File jrubyJar = jrubyJarLocation.get()
        extractGems(project, jrubyJar, gemsAsFileCollection(), out, SKIP)

        dependencies.findAll {
@ -115,6 +145,7 @@ abstract class AbstractJRubyPrepare extends DefaultTask implements JRubyAwareTas
        }
    }

-    private Object outputDir = { -> "${project.buildDir}/.gems" }
+    private Object outputDir
+    private final ProjectOperations projectOperations
 }

--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/ApiException.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/ApiException.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/GemRepositoryConfiguration.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/GemRepositoryConfiguration.groovy
@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
+ *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.github.jrubygradle.api.core
+
+import groovy.transform.CompileStatic
+
+/** Additional options for configuring a remote GEM repository
+ *
+ * @author Schalk W. Cronjé
+ *
+ * @since 2.0
+ */
+@CompileStatic
+class GemRepositoryConfiguration {
+
+    /** Set whether pre-release GEMs should be considered.
+     *
+     */
+    boolean prerelease = false
+}
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServer.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServer.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyAwareTask.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyAwareTask.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyCorePlugin.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyCorePlugin.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -30,6 +30,7 @@ import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.plugins.ExtensionAware
+import org.ysb33r.grolifant.api.core.ProjectOperations

 /** Provides only a repository handler extensiosn for looking up rubygem
 * metadata.
@ -42,6 +43,7 @@ import org.gradle.api.plugins.ExtensionAware
 class JRubyCorePlugin implements Plugin<Project> {
    @Override
    void apply(Project project) {
+        ProjectOperations.maybeCreateExtension(project)
        GemResolverStrategy gemGroups = project.extensions.create(GemResolverStrategy.NAME, GemResolverStrategy)

        ((ExtensionAware) project.repositories).extensions.create(
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyExecSpec.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/JRubyExecSpec.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/RepositoryHandlerExtension.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/RepositoryHandlerExtension.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -29,10 +29,15 @@ import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
 import org.gradle.api.Action
 import org.gradle.api.Project
+import org.gradle.api.artifacts.dsl.RepositoryHandler
 import org.gradle.api.artifacts.repositories.ArtifactRepository
 import org.gradle.api.artifacts.repositories.IvyArtifactRepository
 import org.gradle.api.artifacts.repositories.MavenArtifactRepository
+import org.gradle.api.plugins.ExtensionContainer
 import org.gradle.util.GradleVersion
+import org.ysb33r.grolifant.api.v4.ClosureUtils
+
+import static org.ysb33r.grolifant.api.v4.UriUtils.urize

 /** Extension which can be added to {@code project.repositories}.
 *
@ -50,17 +55,42 @@ class RepositoryHandlerExtension {
     * @param project Gradle project.
     */
    RepositoryHandlerExtension(final Project project) {
-        this.project = project
+        this.extensions = project.extensions
+        this.repositories = project.repositories
        this.ivyProxies = new IvyXmlGlobalProxyRegistry(project)
    }

-    /** Create an artifact repository which will use {@link https://rubygems.org} and
+    /** Create an artifact repository which will use https://rubygems.org and
     * associate group {@code rubygems} with it.
     *
     * @return Artifact repository.
     */
    ArtifactRepository gems() {
-        bindRepositoryToProxyServer('https://rubygems.org'.toURI(), DEFAULT_GROUP_NAME)
+        bindRepositoryToProxyServer(
+            RUBYGEMS_URI,
+            DEFAULT_GROUP_NAME,
+            new GemRepositoryConfiguration()
+        )
+    }
+
+    /** Create an artifact repository which will use https://rubygems.org and
+     * associate group {@code rubygems} with it.
+     *
+     * @param cfg GEM repository configuration
+     * @return Artifact repository.
+     */
+    ArtifactRepository gems(@DelegatesTo(GemRepositoryConfiguration) Closure cfg) {
+        bindRepositoryToProxyServer(RUBYGEMS_URI, DEFAULT_GROUP_NAME, cfg)
+    }
+
+    /** Create an artifact repository which will use https://rubygems.org and
+     * associate group {@code rubygems} with it.
+     *
+     * @param cfg GEM repository configuration
+     * @return Artifact repository.
+     */
+    ArtifactRepository gems(Action<GemRepositoryConfiguration> cfg) {
+        bindRepositoryToProxyServer(RUBYGEMS_URI, DEFAULT_GROUP_NAME, cfg)
    }

    /** Create an artifact repository which will use specified URI and
@ -72,7 +102,33 @@ class RepositoryHandlerExtension {
     * @return Artifact repository.
     */
    ArtifactRepository gems(Object uri) {
-        bindRepositoryToProxyServer(project.uri(uri), DEFAULT_GROUP_NAME)
+        bindRepositoryToProxyServer(urize(uri), DEFAULT_GROUP_NAME, new GemRepositoryConfiguration())
+    }
+
+    /** Create an artifact repository which will use specified URI and
+     * associate group {@code rubygems} with it.
+     *
+     * @param uri URI of remote repository that serves up Rubygems. Any object convertible
+     * with {@code project.uri} can be provided.
+     * @param cfg GEM repository configuration
+     *
+     * @return Artifact repository.
+     */
+    ArtifactRepository gems(Object uri, @DelegatesTo(GemRepositoryConfiguration) Closure cfg) {
+        bindRepositoryToProxyServer(urize(uri), DEFAULT_GROUP_NAME, cfg)
+    }
+
+    /** Create an artifact repository which will use specified URI and
+     * associate group {@code rubygems} with it.
+     *
+     * @param uri URI of remote repository that serves up Rubygems. Any object convertible
+     * with {@code project.uri} can be provided.
+     * @param cfg GEM repository configuration
+     *
+     * @return Artifact repository.
+     */
+    ArtifactRepository gems(Object uri, Action<GemRepositoryConfiguration> cfg) {
+        bindRepositoryToProxyServer(urize(uri), DEFAULT_GROUP_NAME, cfg)
    }

    /** Create an artifact repository which will use specified URI and
@ -84,42 +140,124 @@ class RepositoryHandlerExtension {
     * @return Artifact repository.
     */
    ArtifactRepository gems(String group, Object uri) {
-        bindRepositoryToProxyServer(project.uri(uri), group)
+        bindRepositoryToProxyServer(urize(uri), group, new GemRepositoryConfiguration())
    }

-    /** Adds the legacy Torquebox Maven proxy to {@code rubygems.org}.
+    /** Create an artifact repository which will use specified URI and
+     * associate a specified group with it.
     *
-     * Please note that this proxy is effectively unmaintained an no longer supported
-     * by the original creators.
-     *
-     * @return Maven artifact repository
+     * @param group Group to associate this server with.
+     * @param uri URI of remote repository that serves up Rubygems. Any object convertible
+     * with {@code project.uri} can be provided.
+     * @param cfg GEM repository configuration
+     * @return Artifact repository.
     */
-    MavenArtifactRepository torquebox() {
-        Action mvnConfigurator = new Action<MavenArtifactRepository>() {
+    ArtifactRepository gems(String group, Object uri, @DelegatesTo(GemRepositoryConfiguration) Closure cfg) {
+        bindRepositoryToProxyServer(urize(uri), group, cfg)
+    }
+
+    /** Create an artifact repository which will use specified URI and
+     * associate a specified group with it.
+     *
+     * @param group Group to associate this server with.
+     * @param uri URI of remote repository that serves up Rubygems. Any object convertible
+     * with {@code project.uri} can be provided.
+     * @param cfg GEM repository configuration
+     * @return Artifact repository.
+     */
+    ArtifactRepository gems(String group, Object uri, Action<GemRepositoryConfiguration> cfg) {
+        bindRepositoryToProxyServer(urize(uri), group, cfg)
+    }
+
+    /** Adds the Maven-GEMs proxy that is supported by the JRuby group.
+     *
+     * For supporting Gradle versions, this repository will only be consulted for artifacts that are in the
+     * {@code rubygems} group.
+     *
+     * @return Maven repository
+     */
+    MavenArtifactRepository mavengems() {
+        bindToMavenRepository(MAVENGEMS_URI, DEFAULT_GROUP_NAME)
+    }
+
+    /** Adds a remote Maven-GEMs proxy.
+     *
+     * For supporting Gradle versions, this repository will only be consulted for artifacts that are in the
+     * {@code rubygems} group.
+     *
+     * @param uri Remote Maven-GEMs proxy
+     * @return Maven repository
+     */
+    MavenArtifactRepository mavengems(Object uri) {
+        bindToMavenRepository(urize(uri), DEFAULT_GROUP_NAME)
+    }
+
+    /**  Adds a remote Maven-GEMs proxy anbd allocate a dedicated group for it.
+     *
+     * For supporting Gradle versions, this repository will only be consulted for artifacts that are in the
+     * specified group.
+     *
+     * @param group Maven group name
+     * @param uri Remote Maven-GEMs proxy
+     * @return Maven repository
+     */
+    MavenArtifactRepository mavengems(String group, Object uri) {
+        bindToMavenRepository(urize(uri), group)
+    }
+
+    private MavenArtifactRepository bindToMavenRepository(
+        URI serverUri,
+        String group
+    ) {
+        MavenArtifactRepository repo = repositories.maven(new Action<MavenArtifactRepository>() {
+            @Override
            void execute(MavenArtifactRepository mvn) {
-                mvn.url = 'http://rubygems-proxy.torquebox.org/releases'.toURI()
+                mvn.url = serverUri
            }
-        }
-        (MavenArtifactRepository)restrictToGems(
-            this.project.repositories.maven(mvnConfigurator),
-            DEFAULT_GROUP_NAME
-        )
+        })
+        restrictToGems(repo, group)
+        repo
    }

    private ArtifactRepository bindRepositoryToProxyServer(
        URI serverUri,
-        String group
+        String group,
+        GemRepositoryConfiguration cfg
    ) {
-        IvyXmlProxyServer proxy = ivyProxies.registerProxy(serverUri, group)
-        project.extensions.getByType(GemResolverStrategy).addGemGroup(group)
+        IvyXmlProxyServer proxy = ivyProxies.registerProxy(serverUri, group, cfg)
+        extensions.getByType(GemResolverStrategy).addGemGroup(group)
        restrictToGems(createIvyRepo(serverUri, proxy.bindAddress), group)
    }

+    private ArtifactRepository bindRepositoryToProxyServer(
+        URI serverUri,
+        String group,
+        @DelegatesTo(GemRepositoryConfiguration) Closure cfg
+    ) {
+        GemRepositoryConfiguration grc = new GemRepositoryConfiguration()
+        ClosureUtils.configureItem(grc, cfg)
+        bindRepositoryToProxyServer(serverUri, group, grc)
+    }
+
+    private ArtifactRepository bindRepositoryToProxyServer(
+        URI serverUri,
+        String group,
+        Action<GemRepositoryConfiguration> cfg
+    ) {
+        GemRepositoryConfiguration grc = new GemRepositoryConfiguration()
+        cfg.execute(grc)
+        bindRepositoryToProxyServer(serverUri, group, grc)
+    }
+
    @CompileDynamic
    private IvyArtifactRepository createIvyRepo(URI server, URI bindAddress) {
-        this.project.repositories.ivy {
+        repositories.ivy {
            artifactPattern "${server}/downloads/[artifact]-[revision](-[classifier]).gem"
            ivyPattern "${bindAddress}/[organisation]/[module]/[revision]/ivy.xml"
+
+            if (HAS_SECURE_PROTOCOL_FEATURE) {
+                allowInsecureProtocol = true
+            }
        }
    }

@ -133,7 +271,11 @@ class RepositoryHandlerExtension {
        repo
    }

-    private final Project project
    private final IvyXmlGlobalProxyRegistry ivyProxies
+    private final ExtensionContainer extensions
+    private final RepositoryHandler repositories
    private static final boolean HAS_CONTENT_FEATURE = GradleVersion.current() >= GradleVersion.version('5.1')
+    private static final boolean HAS_SECURE_PROTOCOL_FEATURE = GradleVersion.current() >= GradleVersion.version('6.0')
+    private static final URI RUBYGEMS_URI = 'https://rubygems.org'.toURI()
+    private static final URI MAVENGEMS_URI = 'https://mavengems.jruby.org'.toURI()
 }
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/RubyGemQueryRestApi.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/core/RubyGemQueryRestApi.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -33,9 +33,10 @@ import java.util.List;
 *
 * @since 2.0.
 *
- * @see https://guides.rubygems.org/rubygems-org-api
+ * @see {@link https://guides.rubygems.org/rubygems-org-api}
 */
 public interface RubyGemQueryRestApi {
+
    /**
     * Return all published versions for a specific GEM
     *
@ -45,6 +46,16 @@ public interface RubyGemQueryRestApi {
     */
    List<String> allVersions(String gemName) throws ApiException;

+    /**
+     * Return all published versions for a specific GEM
+     *
+     * @param gemName Name of GEM.
+     * @param includePrelease Whether pre-release versions should be included.
+     * @return List of versions. Can be empty if the GEM does not have any versions. Never {@code null}.
+     * @throws {@link ApiException} if a networking or parser error occurs.
+     */
+    List<String> allVersions(String gemName, boolean includePrelease) throws ApiException;
+
    /**
     * Return latest published version of GEM.
     *
@ -54,6 +65,16 @@ public interface RubyGemQueryRestApi {
     */
    String latestVersion(String gemName) throws ApiException;

+    /**
+     * Return latest published version of GEM.
+     *
+     * @param gemName Name of GEM.
+     * @param allowPrerelease Whether a prereleased version can be considered a latest version.
+     * @return Version of GEM
+     * @throws {@link ApiException} if GEM does not exist.
+     */
+    String latestVersion(String gemName, boolean allowPrerelease) throws ApiException;
+
    /** Returns the basic metadata for a GEM.
     *
     * @param gemName Name of GEM.
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemDependency.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemDependency.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemGroups.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemGroups.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemInfo.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemInfo.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemInstallException.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemInstallException.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemOverwriteAction.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemOverwriteAction.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemResolverStrategy.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemResolverStrategy.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -65,7 +65,7 @@ class GemResolverStrategy {
     * @param configs Configurations to be excluded
     */
    void excludeConfigurations(Configuration... configs) {
-        this.excludedConfigurations.addAll(configs*.name)
+        this.excludedConfigurations.addAll(configs*.name as Iterable<String>)
    }

    /** Exclude a configuration from being resolved using the GEM
@ -102,7 +102,7 @@ class GemResolverStrategy {

    /** Whether the GEM version resolving strategy should be applied for a specific module.
     *
-     * In most cases this will alsways be {@code true} unless a specific rule excludes it.
+     * In most cases this will always be {@code true} unless a specific rule excludes it.
     *
     * @param mvs Module version selector
     * @return Whether the Bundler-like version selector atregty may be applied
@ -132,7 +132,7 @@ class GemResolverStrategy {
        }
    }

-    private final Set<Matcher> excludedModules = [].toSet()
-    private final Set<String> excludedConfigurations = [].toSet()
+    private final Set<Matcher> excludedModules = [].toSet() as Set<Matcher>
+    private final Set<String> excludedConfigurations = [].toSet() as Set<String>
    private final Set<String> groups = [RepositoryHandlerExtension.DEFAULT_GROUP_NAME].toSet()
 }
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemUtils.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemUtils.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,8 +23,8 @@
 */
 package com.github.jrubygradle.api.gems

-import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
+import groovy.util.logging.Slf4j
 import org.gradle.api.Action
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
@ -33,9 +33,9 @@ import org.gradle.api.file.CopySpec
 import org.gradle.api.file.DuplicateFileCopyingException
 import org.gradle.api.file.FileCollection
 import org.gradle.process.JavaExecSpec
-import org.ysb33r.grolifant.api.OperatingSystem
+import org.ysb33r.grolifant.api.core.OperatingSystem
+import org.ysb33r.grolifant.api.core.ProjectOperations

-import static com.github.jrubygradle.api.gems.GemOverwriteAction.SKIP
 import static com.github.jrubygradle.api.gems.GemOverwriteAction.FAIL
 import static com.github.jrubygradle.api.gems.GemOverwriteAction.OVERWRITE

@ -47,6 +47,7 @@ import static com.github.jrubygradle.api.gems.GemOverwriteAction.OVERWRITE
 * @since 2.0
 */
@CompileStatic
+@Slf4j
 class GemUtils {
    public static final String JRUBY_MAINCLASS = 'org.jruby.Main'
    public static final String JRUBY_ARCHIVE_NAME = 'jruby-complete'
@ -69,7 +70,10 @@ class GemUtils {
     * @param gem Gem file to extract.
     * @param destDir Directory to extract to.
     * @param overwrite Allow overwrite of an existing gem folder.
+     * @deprecated Use the version that takes a {@link ProjectOperations} instead as it will be safe when
+     * configuration cache is active.
     */
+    @Deprecated
    static void extractGem(
        Project project,
        File jRubyClasspath,
@ -77,7 +81,27 @@ class GemUtils {
        File destDir,
        GemOverwriteAction overwrite
    ) {
+        ProjectOperations po = ProjectOperations.find(project)
+        extractGems(po, jRubyClasspath, po.files(gem), destDir, overwrite)
+    }

+    /** Extracts a gem to a folder
+     *
+     * @param project {@link ProjectOperations} instance.
+     * @param jRubyClasspath The path to the {@code jruby-complete} jar.
+     * @param gem Gem file to extract.
+     * @param destDir Directory to extract to.
+     * @param overwrite Allow overwrite of an existing gem folder.
+     *
+     * @since 2.1.0
+     */
+    static void extractGem(
+        ProjectOperations project,
+        File jRubyClasspath,
+        File gem,
+        File destDir,
+        GemOverwriteAction overwrite
+    ) {
        extractGems(project, jRubyClasspath, project.files(gem), destDir, overwrite)
    }

@ -88,13 +112,36 @@ class GemUtils {
     * @param gems GEMs to install.
     * @param destDir Directory to extract to.
     * @param overwrite Allow overwrite of an existing gem folder.
+     *
+     * @deprecated Use the version that takes a {@Link ProjectOperations} instead.
     */
+    @Deprecated
    static void extractGems(
        Project project,
        File jRubyClasspath,
        FileCollection gems,
        File destDir,
        GemOverwriteAction overwrite
+    ) {
+        extractGems(ProjectOperations.find(project), jRubyClasspath, gems, destDir, overwrite)
+    }
+
+    /** Extracts and install a collection of GEMs.
+     *
+     * @param project {@link ProjectOperations} instance.
+     * @param jRubyClasspath The path to the {@code jruby-complete} jar.
+     * @param gems GEMs to install.
+     * @param destDir Directory to extract to.
+     * @param overwrite Allow overwrite of an existing gem folder.
+     *
+     * @since 2.1.0
+     */
+    static void extractGems(
+        ProjectOperations project,
+        File jRubyClasspath,
+        FileCollection gems,
+        File destDir,
+        GemOverwriteAction overwrite
    ) {
        Set<File> gemsToProcess = []
        Set<File> deletes = []
@ -107,7 +154,7 @@ class GemUtils {
            File extractDirForJava = new File(destDir, "gems/${gemName}-java")

            switch (overwrite) {
-                case SKIP:
+                case GemOverwriteAction.SKIP:
                    if (extractDir.exists() || extractDirForJava.exists()) {
                        return
                    }
@ -125,10 +172,10 @@ class GemUtils {
        }

        if (gemsToProcess.size()) {
-            deletes.each { project.delete it }
+            deletes.each { project.delete(it) }
            destDir.mkdirs()

-            project.logger.info("Installing ${gemsToProcess*.name.join(',')}")
+            log.info("Installing ${gemsToProcess*.name.join(',')}")

            project.javaexec { JavaExecSpec spec ->
                spec.with {
@ -189,13 +236,40 @@ class GemUtils {
     * @param gemConfig Configuration containing GEMs
     * @param destDir Directory to extract to
     * @param action Allow overwrite of an existing gem folder
+     * @deprecated Use the version that takes a {@Link ProjectOperations} instead
     */
+    @Deprecated
    static void extractGems(
        Project project,
        Configuration jRubyConfig,
        Configuration gemConfig,
        File destDir,
        GemOverwriteAction action) {
+        extractGems(
+            ProjectOperations.find(project),
+            jRubyConfig,
+            gemConfig,
+            destDir,
+            action
+        )
+    }
+
+    /** Extract Gems from a given configuration.
+     *
+     * @param projectOperations Project instance
+     * @param jRubyClasspath Where to find the jruby-complete jar
+     * @param gemConfig Configuration containing GEMs
+     * @param destDir Directory to extract to
+     * @param action Allow overwrite of an existing gem folder
+     *
+     * @since 1.0
+     */
+    static void extractGems(
+        ProjectOperations projectOperations,
+        Configuration jRubyConfig,
+        Configuration gemConfig,
+        File destDir,
+        GemOverwriteAction action) {

        Set<File> cp = jRubyConfig.files
        File jRubyClasspath = cp.find { it.name.startsWith(JRUBY_ARCHIVE_NAME) }
@ -204,7 +278,7 @@ class GemUtils {
                "Cannot find ${JRUBY_ARCHIVE_NAME}. Classpath contains ${cp.join(':')}"
            )
        }
-        extractGems(project, jRubyClasspath, project.files(gemConfig.files), destDir, action)
+        extractGems(projectOperations, jRubyClasspath, projectOperations.files(gemConfig.files), destDir, action)
    }

    /** Write a JARs lock file if the content has changed.
@ -325,27 +399,47 @@ class GemUtils {
     * @param Additional properties to control behaviour
     * @param dir The source of the GEM files
     * @return Returns a CopySpec which can be attached as a child to another object that implements a CopySpec
-     * @since 0.1.2
+     * @since 0.1.2*
+     * @deprecated Use the version that takes a {@link ProjectOperations}.
     */
-    @CompileDynamic
+    @Deprecated
    static CopySpec gemCopySpec(Map properties = [:], Project project, Object dir) {
+        gemCopySpec(properties, ProjectOperations.find(project), dir)
+    }
+
+    /** Adds a GEM CopySpec to an archive
+     *
+     * The following are supported as properties:
+     * <ul>
+     * <li>fullGem (boolean) - Copy all of the GEM content, not just a minimal subset</li>
+     * <li>subfolder (Object) - Adds an additional subfolder into the GEM
+     * </ul>
+     *
+     * @param Additional properties to control behaviour
+     * @param dir The source of the GEM files
+     * @return Returns a CopySpec which can be attached as a child to another object that implements a CopySpec
+     * @since 1.0
+     */
+    static CopySpec gemCopySpec(Map properties = [:], ProjectOperations projectOperations, Object dir) {
        boolean fullGem = properties['fullGem']
        String subFolder = properties['subfolder']

-        project.copySpec(new Action<CopySpec>() {
+        projectOperations.copySpec(new Action<CopySpec>() {
            void execute(CopySpec spec) {
                spec.with {
-                    from(dir) {
-                        include EVERYTHING
-                        // TODO have some standard which is bin/*, gems/**
-                        // specifications/*
-                        if (!fullGem) {
-                            exclude 'cache/**'
-                            exclude 'gems/*/test/**'
-                            exclude 'gems/*/tests/**'
-                            exclude 'gems/*/spec/**'
-                            exclude 'gems/*/specs/**'
-                            exclude 'build_info'
+                    from(dir) { CopySpec cs ->
+                        cs.with {
+                            include EVERYTHING
+                            // TODO have some standard which is bin/*, gems/**
+                            // specifications/*
+                            if (!fullGem) {
+                                exclude 'cache/**'
+                                exclude 'gems/*/test/**'
+                                exclude 'gems/*/tests/**'
+                                exclude 'gems/*/spec/**'
+                                exclude 'gems/*/specs/**'
+                                exclude 'build_info'
+                            }
                        }
                    }
                    if (subFolder) {
@ -356,6 +450,7 @@ class GemUtils {
        })
    }

+    @Deprecated
    static CopySpec jarCopySpec(Project project, Object dir) {
        project.copySpec { CopySpec spec ->
            spec.with {
@ -364,6 +459,14 @@ class GemUtils {
        }
    }

+    static CopySpec jarCopySpec(ProjectOperations projectOperations, Object dir) {
+        projectOperations.copySpec { CopySpec spec ->
+            spec.with {
+                from(dir) { include EVERYTHING }
+            }
+        }
+    }
+
    private static final String GEM = 'gem'
    private static final String GEM_EXTENSION = '.gem'
    private static final String EVERYTHING = '**'
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemVersion.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemVersion.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -62,6 +62,7 @@ import static com.github.jrubygradle.api.gems.GemVersion.Boundary.OPEN_ENDED
 *
 * @author Christian Meier
 * @author Schalk W. Cronjé
+ * @author Guillaume Grossetie
 *
 * @since 2.0 (Moved here from base plugin where it existed since 0.4.0)
 */
@ -177,7 +178,7 @@ class GemVersion implements Comparable<GemVersion> {
            gemVersions.first()
        } else {
            gemVersions[1..-1].inject(gemVersions.first()) { range, value ->
-                range.union(value)
+                range.intersect(value)
            }
        }
    }
@ -300,66 +301,53 @@ class GemVersion implements Comparable<GemVersion> {
     * @since 2.0
     */
    GemVersion intersect(GemVersion other) {
-        Boundary newLowBoundary
-        String newLow
-        switch (compare(low, other.low)) {
-            case -1:
-                newLow = other.low
-                newLowBoundary = other.lowBoundary
-                break
-            case 0:
-                newLowBoundary = (lowBoundary == EXCLUSIVE || other.lowBoundary == EXCLUSIVE) ? EXCLUSIVE : INCLUSIVE
-                newLow = low
-                break
-            case 1:
-                newLow = low
-                newLowBoundary = lowBoundary
-        }
-
-        Boundary newHighBoundary
-        String newHigh
-
-        if (!high && other.high) {
-            newHigh = other.high
-            newHighBoundary = other.highBoundary
-        } else if (high && !other.high) {
-            newHigh = high
-            newHighBoundary = highBoundary
-        } else if (!high && !other.high) {
-            newHigh = null
-            newHighBoundary = highBoundary
-        } else {
-            switch (compare(high, other.high)) {
-                case 1:
-                    newHigh = other.high
-                    newHighBoundary = other.highBoundary
-                    break
-                case 0:
-                    newHighBoundary = (highBoundary == EXCLUSIVE || other.highBoundary == EXCLUSIVE) ? EXCLUSIVE : INCLUSIVE
-                    newHigh = high
-                    break
-                case -1:
-                    newHigh = high
-                    newHighBoundary = highBoundary
+        Tuple2<String, Boundary> newLowVersionSpec = intersect(low, lowBoundary, other.low, other.lowBoundary, true)
+        Tuple2<String, Boundary> newHighVersionSpec = intersect(high, highBoundary, other.high, other.highBoundary, false)
+        GemVersion intersection = new GemVersion(newLowVersionSpec.second, newLowVersionSpec.first, newHighVersionSpec.first, newHighVersionSpec.second)
+        if (intersection == this) {
+            // is other a subset of this?
+            if (compare(this.low, other.low) >= 0 && compare(other.low, this.high) < 0 && compare(this.high, other.high) <= 0) {
+                return intersection
            }
+            return NO_VERSION
        }
-        return new GemVersion(newLowBoundary, newLow, newHigh, newHighBoundary)
+        if (intersection == other) {
+            // is this a subset of other?
+            if (compare(other.low, this.low) >= 0 && compare(this.low, other.high) < 0 && compare(other.high, this.high) <= 0) {
+                return intersection
+            }
+            return NO_VERSION
+        }
+        return intersection
    }

-    /** Creates a new GEM version requirement which that the lowest of two requirements and the highest
-     * of those same requirement
-     *
-     * @param other Other GEM to combine with
-     * @return New GEM version requirement.
-     *
-     * @since 2.0
-     */
-    GemVersion union(GemVersion other) {
-        List<GemVersion> pair = [this, other]
-        GemVersion min = pair.min()
-        GemVersion max = pair.max()
+    Tuple2<String,Boundary> intersect(String version, Boundary boundary, String otherVersion, Boundary otherBoundary, boolean low) {
+        Boundary newBoundary
+        String newVersion
+        if (!version && otherVersion) {
+            newVersion = otherVersion
+            newBoundary = otherBoundary
+        } else if (version && !otherVersion) {
+            newVersion = version
+            newBoundary = boundary
+        } else if (!version && !otherVersion) {
+            newVersion = null
+            newBoundary = boundary
+        } else {
+            int compareLow = low ? compare(version, otherVersion) : compare(otherVersion, version)
+            if (compareLow < 0) {
+                newVersion = otherVersion
+                newBoundary = otherBoundary
+            } else if (compareLow > 0) {
+                newVersion = version
+                newBoundary = boundary
+            } else {
+                newBoundary = (boundary == INCLUSIVE || otherBoundary == INCLUSIVE) ? INCLUSIVE : EXCLUSIVE
+                newVersion = version
+            }
+        }

-        new GemVersion(min.lowBoundary, min.low, max.high, max.highBoundary)
+        return new Tuple2(newVersion, newBoundary)
    }

    /** Allows for versions to be compared and sorted.
@ -480,13 +468,6 @@ class GemVersion implements Comparable<GemVersion> {
        matcher[0][1]
    }

-//    private GemVersion(Boolean lowInclusive, String low, String high, Boolean highInclusive) {
-//        this.lowBoundary = lowInclusive ? INCLUSIVE : EXCLUSIVE
-//        this.low = low
-//        this.high = high
-//        this.highBoundary = highInclusive ? INCLUSIVE : EXCLUSIVE
-//    }
-
    private GemVersion(Boundary pre, String low, String high, Boundary post) {
        this.lowBoundary = pre
        this.low = low
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemVersionException.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/GemVersionException.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/JarDependency.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/api/gems/JarDependency.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/AbstractIvyXmlProxyServer.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/AbstractIvyXmlProxyServer.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -24,6 +24,7 @@
 package com.github.jrubygradle.internal.core

 import com.github.jrubygradle.api.core.ApiException
+import com.github.jrubygradle.api.core.GemRepositoryConfiguration
 import com.github.jrubygradle.api.core.IvyXmlProxyServer
 import com.github.jrubygradle.api.core.RubyGemQueryRestApi
 import com.github.jrubygradle.api.gems.GemInfo
@ -94,12 +95,19 @@ abstract class AbstractIvyXmlProxyServer implements IvyXmlProxyServer {
     * @param cache Root directory for local Ivy XML cache.
     * @param serverUri URI of remote Rubygems proxy.
     * @param group Group that will be associated with the Rubygems proxy.
+     * @param grc       Additional configuration regarding remote GEM server
     */
-    protected AbstractIvyXmlProxyServer(File cache, URI serverUri, String group) {
+    protected AbstractIvyXmlProxyServer(
+        File cache,
+        URI serverUri,
+        String group,
+        GemRepositoryConfiguration grc
+    ) {
        localCachePath = cache
        gemToIvy = new GemToIvy(serverUri)
        api = new DefaultRubyGemRestApi(serverUri)
        this.group = group
+        this.configuration = grc
    }

    @Synchronized
@ -170,7 +178,7 @@ abstract class AbstractIvyXmlProxyServer implements IvyXmlProxyServer {
    protected String getDirectoryListing(String grp, String name) throws NotFound {
        if (inGroups(grp)) {
            debug "Request to find all versions for ${grp}:${name}"
-            List<String> versions = api.allVersions(name)
+            List<String> versions = api.allVersions(name, configuration.prerelease)
            debug "Got versions ${versions.join(', ')}"
            revisionsAsHtmlDirectoryListing(versions)
        } else {
@ -185,7 +193,7 @@ abstract class AbstractIvyXmlProxyServer implements IvyXmlProxyServer {

    private String getGemQueryRevisionFromIvy(String gemName, String revisionPattern) {
        GemVersion version = gemVersionFromGradleIvyRequirement(revisionPattern)
-        version.highOpenEnded ? api.latestVersion(gemName) : version.high
+        version.highOpenEnded ? api.latestVersion(gemName, configuration.prerelease) : version.high
    }

    private void debug(String text) {
@ -203,4 +211,5 @@ abstract class AbstractIvyXmlProxyServer implements IvyXmlProxyServer {
    private final GemToIvy gemToIvy
    private final RubyGemQueryRestApi api
    private final String group
+    private final GemRepositoryConfiguration configuration
 }
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/DefaultRubyGemRestApi.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/DefaultRubyGemRestApi.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,6 +23,7 @@
 */
 package com.github.jrubygradle.internal.core

+import com.github.jrubygradle.api.core.ApiException
 import com.github.jrubygradle.api.gems.GemInfo
 import com.github.jrubygradle.api.gems.JarDependency
 import com.github.jrubygradle.internal.gems.DefaultGemDependency
@ -33,7 +34,9 @@ import groovy.transform.CompileStatic
 import groovyx.net.http.HttpBuilder
 import groovyx.net.http.HttpException
 import okhttp3.OkHttpClient
+import org.gradle.util.GradleVersion

+import static com.github.jrubygradle.internal.gems.GemToIvy.JAVA_PLATFORM
 import static groovyx.net.http.ContentTypes.JSON
 import static groovyx.net.http.NativeHandlers.Parsers.json
 import static groovyx.net.http.OkHttpBuilder.configure
@ -50,7 +53,7 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu

    /** Creates a client from a URI
     *
-     * @param serverUri URI as a String. ONly the scheme plus host
+     * @param serverUri URI as a String. Only the scheme plus host
     * parts should be provided.
     */
    DefaultRubyGemRestApi(final String serverUri) {
@ -73,12 +76,25 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu
     * @throw {@link com.github.jrubygradle.api.core.ApiException} if a networking error occurred.
     */
    @Override
-    @SuppressWarnings('CatchThrowable')
    List<String> allVersions(String gemName) {
+        allVersions(gemName, false)
+    }
+
+    /**
+     * Return all published versions for a specific GEM
+     *
+     * @param gemName Name of GEM.
+     * @param includePrelease Whether pre-release versions should be included.
+     * @return List of versions. Can be empty if the GEM does not have any versions. Never {@code null}.
+     * @throws {@link ApiException} if a networking or parser error occurs.
+     */
+    @Override
+    @SuppressWarnings('CatchThrowable')
+    List<String> allVersions(String gemName, boolean includePrelease) {
        try {
-            extractVersions(getData(V1, "versions/${gemName}"))
+            extractVersions(getData(V1, "versions/${gemName}"), includePrelease)
        } catch (Throwable e) {
-            throw new com.github.jrubygradle.api.core.ApiException("Count not retrieve list of versions for ${gemName}", e)
+            throw new ApiException("Count not retrieve list of versions for ${gemName}", e)
        }
    }

@ -89,16 +105,33 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu
     * @throw {@link com.github.jrubygradle.api.core.ApiException} if a networking error occurred or the GEM does not exist.
     */
    @Override
-    @SuppressWarnings('CatchThrowable')
    String latestVersion(String gemName) {
+        latestVersion(gemName, false)
+    }
+
+    /**
+     * Return latest published version of GEM.
+     *
+     * @param gemName Name of GEM.
+     * @param allowPrerelease Whether a prereleased version can be considered a latest version.
+     * @return Version of GEM
+     * @throws {@link ApiException} if GEM does not exist.
+     */
+    @Override
+    @SuppressWarnings('CatchThrowable')
+    String latestVersion(String gemName, boolean allowPrerelease) {
        String version
        try {
-            version = extractVersion(getData(V1, "versions/${gemName}/latest"))
+            if (allowPrerelease) {
+                version = allVersions(gemName, allowPrerelease).collect { GradleVersion.version(it) }.max().toString()
+            } else {
+                version = extractVersion(getData(V1, "versions/${gemName}/latest"))
+            }
        } catch (Throwable e) {
-            throw new com.github.jrubygradle.api.core.ApiException("Failed to retrieve latest version of ${gemName}", e)
+            throw new ApiException("Failed to retrieve latest version of ${gemName}", e)
        }
        if (version == 'unknown') {
-            throw new com.github.jrubygradle.api.core.ApiException("Cound not retrieve latest version of ${gemName}. Maybe it does not exist")
+            throw new ApiException("Cound not retrieve latest version of ${gemName}. Maybe it does not exist")
        }
        version
    }
@ -116,9 +149,9 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu
        try {
            extractMetadata(getData(V2, "rubygems/${gemName}/versions/${gemVersion}"))
        } catch (HttpException e) {
-            throw new com.github.jrubygradle.api.core.ApiException(":${gemName}:${gemVersion} not found", e)
+            throw new ApiException(":${gemName}:${gemVersion} not found", e)
        } catch (Throwable e) {
-            throw new com.github.jrubygradle.api.core.ApiException("Could not obtain information for :${gemName}:${gemVersion}.", e)
+            throw new ApiException("Could not obtain information for :${gemName}:${gemVersion}.", e)
        }
    }

@ -147,8 +180,12 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu
    }

    @CompileDynamic
-    private List<String> extractVersions(Object jsonParser) {
-        jsonParser*.number
+    private List<String> extractVersions(Object jsonParser, boolean includePrerelease) {
+        if (includePrerelease) {
+            jsonParser*.number
+        } else {
+            jsonParser.findAll { !it.prerelease }*.number
+        }
    }

    @CompileDynamic
@ -171,8 +208,16 @@ class DefaultRubyGemRestApi implements com.github.jrubygradle.api.core.RubyGemQu
            // licenses arrayList
        )

+        if (metadata.platform != JAVA_PLATFORM) {
+            if (getData(V1, "versions/${metadata.name}").find {
+                it.number == metadata.version && it.platform == JAVA_PLATFORM
+            }) {
+                metadata.platform = JAVA_PLATFORM
+            }
+        }
+
        if (jsonParser.dependencies?.runtime) {
-            metadata.dependencies.addAll( Transform.toList(jsonParser.dependencies.runtime) {
+            metadata.dependencies.addAll(Transform.toList(jsonParser.dependencies.runtime) {
                new DefaultGemDependency(name: it.name, requirements: it.requirements)
            })
        }
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyUtils.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyUtils.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyXmlGlobalProxyRegistry.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyXmlGlobalProxyRegistry.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,6 +23,7 @@
 */
 package com.github.jrubygradle.internal.core

+import com.github.jrubygradle.api.core.GemRepositoryConfiguration
 import groovy.transform.CompileStatic
 import org.gradle.api.Project

@ -44,7 +45,7 @@ class IvyXmlGlobalProxyRegistry {
     * @param project Associated project.
     */
    IvyXmlGlobalProxyRegistry(Project project) {
-        rootCacheDir = new File(project.gradle.gradleUserHomeDir, 'rubygems-ivyxml-cache')
+        rootCacheDir = new File(project.gradle.gradleUserHomeDir, "rubygems-ivyxml-cache/${PluginMetadata.version()}")
        refresh = project.gradle.startParameter.refreshDependencies
    }

@ -54,8 +55,17 @@ class IvyXmlGlobalProxyRegistry {
     * @param group Group name for GEMs that will be fected from the remote.
     * @return Access to a proxy sever. If the server does not exist it will be created.
     */
-    com.github.jrubygradle.api.core.IvyXmlProxyServer registerProxy(URI remoteURI, String group) {
-        com.github.jrubygradle.api.core.IvyXmlProxyServer proxy = getOrCreateServer(remoteURI, group, new File(rootCacheDir, uriHash(remoteURI)))
+    com.github.jrubygradle.api.core.IvyXmlProxyServer registerProxy(
+        URI remoteURI,
+        String group,
+        GemRepositoryConfiguration grc
+    ) {
+        com.github.jrubygradle.api.core.IvyXmlProxyServer proxy = getOrCreateServer(
+            remoteURI,
+            group,
+            new File(rootCacheDir, uriHash(remoteURI)),
+            grc
+        )
        proxy.refreshDependencies = refresh
        proxy
    }
@ -68,10 +78,11 @@ class IvyXmlGlobalProxyRegistry {
    static private com.github.jrubygradle.api.core.IvyXmlProxyServer getOrCreateServer(
        URI uri,
        String group,
-        File cacheDir
+        File cacheDir,
+        GemRepositoryConfiguration grc
    ) {
        SERVER_MAP.computeIfAbsent(uri, {
-            com.github.jrubygradle.api.core.IvyXmlProxyServer server = createProxyServer(uri, group, cacheDir)
+            com.github.jrubygradle.api.core.IvyXmlProxyServer server = createProxyServer(uri, group, cacheDir, grc)
            server.run()
            server
        })
@ -80,9 +91,10 @@ class IvyXmlGlobalProxyRegistry {
    static private com.github.jrubygradle.api.core.IvyXmlProxyServer createProxyServer(
        URI uri,
        String group,
-        File cacheDir
+        File cacheDir,
+        GemRepositoryConfiguration grc
    ) {
-        new IvyXmlRatpackProxyServer(cacheDir, uri, group)
+        new IvyXmlRatpackProxyServer(cacheDir, uri, group, grc)
    }

    static private final ConcurrentMap<URI, com.github.jrubygradle.api.core.IvyXmlProxyServer> SERVER_MAP = new ConcurrentHashMap<>()
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyXmlRatpackProxyServer.java
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/IvyXmlRatpackProxyServer.java
@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,6 +23,7 @@
 */
 package com.github.jrubygradle.internal.core;

+import com.github.jrubygradle.api.core.GemRepositoryConfiguration;
 import ratpack.server.RatpackServer;

 import java.io.File;
@ -46,9 +47,15 @@ public class IvyXmlRatpackProxyServer extends AbstractIvyXmlProxyServer {
     * @param cache     Root directory for local Ivy XML cache.
     * @param serverUri URI of remote Rubygems proxy.
     * @param group     Group that will be associated with the Rubygems proxy.
+     * @param grc       Additional configuration regarding remote GEM server
     */
-    public IvyXmlRatpackProxyServer(File cache, URI serverUri, String group) {
-        super(cache, serverUri, group);
+    public IvyXmlRatpackProxyServer(
+            File cache,
+            URI serverUri,
+            String group,
+            GemRepositoryConfiguration grc
+    ) {
+        super(cache, serverUri, group, grc);
    }

    /**
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/PluginMetadata.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/PluginMetadata.groovy
@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
+ *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.github.jrubygradle.internal.core
+
+import groovy.transform.CompileStatic
+
+/** Provides some metadata about this plugin
+ *
+ * @author Schalk W. Cronjé
+ *
+ * @since 2.0.0
+ *
+ */
+@CompileStatic
+class PluginMetadata {
+
+    /** Plugin version
+     *
+     * @return Version of this plugin.
+     */
+    static String version() {
+        METADATA['version']
+    }
+
+    private static Map<String,String> loadProperties() {
+        final String location = 'META-INF/jruby-gradle/com.jrubygradle.core-plugin.version.properties'
+        final Properties props = new Properties()
+        PluginMetadata.classLoader.getResourceAsStream(location).withCloseable { strm ->
+            props.load(strm)
+        }
+        props as Map<String,String>
+    }
+
+    private static final Map<String,String> METADATA = loadProperties()
+}
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/Transform.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/core/Transform.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultGemDependency.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultGemDependency.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultGemInfo.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultGemInfo.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultJarDependency.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/DefaultJarDependency.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/GemToIvy.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/GemToIvy.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -41,6 +41,8 @@ import static com.github.jrubygradle.api.gems.GemVersion.singleGemVersionFromMul
@CompileStatic
 class GemToIvy {

+    public static final String JAVA_PLATFORM = 'java'
+
    /** Create a converter from GEM metadata to Ivy metadata.
     *
     * This constructor version assumes that the group is called {@code rubygems}.
@ -145,7 +147,7 @@ class GemToIvy {
        writer.toString()
    }

-    /** Writes the SHA1 checksum of the {@code ivy.xmnl} file.
+    /** Writes the SHA1 checksum of the {@code ivy.xml} file.
     *
     * @param ivyXml Fle containing the {@code ivy.xml} content/
     * @return Checksum file.
@ -156,7 +158,6 @@ class GemToIvy {
        shaFile
    }

-    private static final String JAVA_PLATFORM = 'java'
    private final String serverUri
    private final String org = 'rubygems'
 }
--- a/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/GemVersionResolver.groovy
+++ b/core-plugin/src/main/groovy/com/github/jrubygradle/internal/gems/GemVersionResolver.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.core.properties
+++ b/core-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.core.properties
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/main/resources/META-INF/jruby-gradle/com.jrubygradle.core-plugin.version.properties
+++ b/core-plugin/src/main/resources/META-INF/jruby-gradle/com.jrubygradle.core-plugin.version.properties
@ -0,0 +1,25 @@
+#
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
+#     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+version=${VERSION}
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServerSpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/IvyXmlProxyServerSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -42,7 +42,12 @@ class IvyXmlProxyServerSpec extends Specification {
    TemporaryFolder projectRoot

    void setup() {
-        server = new IvyXmlRatpackProxyServer(projectRoot.root, 'https://rubygems.org'.toURI(), 'rubygems')
+        server = new IvyXmlRatpackProxyServer(
+            projectRoot.root,
+            'https://rubygems.org'.toURI(),
+            'rubygems',
+            new GemRepositoryConfiguration()
+        )
        server.run()
        httpBuilder = OkHttpBuilder.configure {
            request.uri = server.bindAddress
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/RepositoryHandlerExtensionSpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/RepositoryHandlerExtensionSpec.groovy
@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
+ *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.github.jrubygradle.api.core
+
+import org.gradle.api.Project
+import org.gradle.testfixtures.ProjectBuilder
+import spock.lang.Specification
+
+
+class RepositoryHandlerExtensionSpec extends Specification {
+
+    Project project = ProjectBuilder.builder().build()
+
+    void 'Add Maven repository'() {
+        when:
+        project.allprojects {
+            apply plugin : JRubyCorePlugin
+
+            repositories {
+                ruby {
+                    mavengems()
+                    mavengems('https://goo1')
+                    mavengems('goo2','https://goo2')
+                }
+            }
+        }
+
+        then:
+        project.repositories.size() == 3
+    }
+}
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/RubyGemQueryRestApiSpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/api/core/RubyGemQueryRestApiSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/api/gems/GemUtilsSpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/api/gems/GemUtilsSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -28,6 +28,7 @@ import com.github.jrubygradle.api.gems.GemUtils
 import org.gradle.api.Project
 import org.gradle.api.file.DuplicateFileCopyingException
 import org.gradle.testfixtures.ProjectBuilder
+import org.ysb33r.grolifant.api.core.ProjectOperations
 import spock.lang.Specification

 import static com.github.jrubygradle.api.gems.GemOverwriteAction.FAIL
@ -46,6 +47,7 @@ class GemUtilsSpec extends Specification {

    void setup() {
        project = ProjectBuilder.builder().build()
+        ProjectOperations.maybeCreateExtension(project)
        src = project.file('src')
        dest = project.file('dest')
        fakeGem = new File(src, 'gems/mygem-1.0')
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/api/gems/GemVersionSpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/api/gems/GemVersionSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -23,7 +23,6 @@
 */
 package com.github.jrubygradle.api.gems

-import com.github.jrubygradle.api.gems.GemVersion
 import spock.lang.Specification
 import spock.lang.Unroll

@ -77,7 +76,7 @@ class GemVersionSpec extends Specification {
    }

    @Unroll
-    void "Intersect: #ivyLeft ∩ #ivyRight ⇒ Gem #gemVer"() {
+    void "intersect: #ivyLeft ∩ #ivyRight ⇒ Gem #gemVer"() {
        when:
        GemVersion lhs = gemVersionFromGradleIvyRequirement(ivyLeft)
        GemVersion rhs = gemVersionFromGradleIvyRequirement(ivyRight)
@ -87,10 +86,10 @@ class GemVersionSpec extends Specification {

        where:
        ivyLeft             | ivyRight            | gemVer
-        '[1.2.1,1.2.4]'     | ']1.2.1,1.2.4['     | ']1.2.1,1.2.4['
+        '[1.2.1,1.2.4]'     | ']1.2.1,1.2.4['     | '[1.2.1,1.2.4]'
        '[1.2.0,1.2.4]'     | ']1.2.1,1.2.3['     | ']1.2.1,1.2.3['
        '[1.2.0,1.2.4]'     | '[1.2.1,1.2.3]'     | '[1.2.1,1.2.3]'
-        ']1.2.0,1.2.4['     | '[1.2.0,1.2.4]'     | ']1.2.0,1.2.4['
+        ']1.2.0,1.2.4['     | '[1.2.0,1.2.4]'     | '[1.2.0,1.2.4]'
        ']1.2.1,1.2.3['     | '[1.2.0,1.2.4]'     | ']1.2.1,1.2.3['
        '[1.2.1,1.2.3]'     | '[1.2.0,1.2.4]'     | '[1.2.1,1.2.3]'
        '[1.2.10,1.2.14]'   | '[1.2.2,1.10.14]'   | '[1.2.10,1.2.14]'
@ -100,9 +99,20 @@ class GemVersionSpec extends Specification {
        ']2.5.1.1,99999]'   | ']2.5.1.1,)'        | ']2.5.1.1,99999]'
    }

-    void 'Ivy union of < 3, >= 1.2'() {
-        expect:
-        singleGemVersionFromMultipleGemRequirements('< 3,>= 1.2').toString() == '[1.2,3['
+    @Unroll
+    void '#gemRequirements (requirements) ⇒ #gemRequirement (requirement)'() {
+        when:
+        GemVersion subject = singleGemVersionFromMultipleGemRequirements(gemRequirements)
+
+        then:
+        subject.toString() == gemRequirement
+
+        where:
+        gemRequirements    | gemRequirement
+        '< 3,>= 1.2'       | '[1.2,3['
+        '>= 3.0, < 4.0'    | '[3.0,4.0['
+        '< 4.0, >= 3.0'    | '[3.0,4.0['
+        '~> 2.2, >= 2.2.1' | '[2.2.1,3.0['
    }

    void "intersects with conflict"() {
@ -110,7 +120,7 @@ class GemVersionSpec extends Specification {
        GemVersion subject = gemVersionFromGradleIvyRequirement('[1.2.1,1.2.3]')

        expect:
-        subject.intersect('[1.2.4, 1.2.4]').conflict() == true
+        subject.intersect('[1.2.4, 1.2.4]').conflict()
    }

    void "finds no conflicts in non-integer version ranges"() {
--- a/core-plugin/src/test/groovy/com/github/jrubygradle/internal/gems/GemToIvySpec.groovy
+++ b/core-plugin/src/test/groovy/com/github/jrubygradle/internal/gems/GemToIvySpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/gradle.properties
+++ b/gradle.properties
@ -1,6 +1,6 @@
-version=2.0.0-alpha1
+version=2.1.0-alpha.1
 group=com.github.jruby-gradle
-copyrightYear=2014-2019
+copyrightYear=2014-2020

 org.gradle.daemon=true
 org.gradle.caching=true
@ -14,10 +14,12 @@ releaseBuild=false
 targetCompatibility=1.8
 sourceCompatibility=1.8

-jrubyVersion=9.2.7.0
+grolifantVersion=1.0.0-alpha.1
+jrubyVersion=9.2.9.0
 jettyVersion=9.2.12.v20150709
 bcprovVersion=1.46
 httpbuilderNgVersion=1.0.3
+dropwizardMetricsCoreVersion=3.1.0
 torqueboxProxy=http://rubygems-proxy.torquebox.org/releases
 ratpackVersion=1.6.1
 # unit test / integration test only
--- a/gradle/integration-tests.gradle
+++ b/gradle/integration-tests.gradle
@ -17,7 +17,7 @@ dependencies {
    /* We want to cache jruby-complete at this alternative version which we use
     * in many places
     */
-    integrationTestGems 'org.jruby:jruby-complete:1.7.11'
+    integrationTestGems "org.jruby:jruby-complete:${olderJRubyVersion}"
 }

 sourceSets {
--- a/jar-plugin/README.adoc
+++ b/jar-plugin/README.adoc
@ -7,7 +7,7 @@ image::https://api.bintray.com/packages/jruby-gradle/plugins/jruby-gradle-jar-pl

 === Compatibility

-This plugin requires link::http://gradle.org[Gradle] 2.0 or better
+This plugin requires link::http://gradle.org[Gradle] 4.9 or better

 === Installing

--- a/jar-plugin/src/gradleTest/.gitkeep
+++ b/jar-plugin/src/gradleTest/.gitkeep
--- a/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/JRubyJarIntegrationSpec.groovy
+++ b/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/JRubyJarIntegrationSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/JRubyJarTestKitSpec.groovy
+++ b/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/JRubyJarTestKitSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -227,7 +227,7 @@ class JRubyJarTestKitSpec extends IntegrationSpecification {

    private BuildResult build(String taskName, String... additionalTasks) {
        writeBuildFile()
-        List<String> tasks = ['-i', taskName]
+        List<String> tasks = ['-i', '-s', taskName]
        tasks.addAll(additionalTasks)
        gradleRunner(tasks).build()
    }
--- a/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/helpers/IntegrationSpecification.groovy
+++ b/jar-plugin/src/integTest/groovy/com/github/jrubygradle/jar/helpers/IntegrationSpecification.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJar.groovy
+++ b/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJar.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
@ -71,6 +71,7 @@ class JRubyJar extends Jar {
    /**
     * @return Directory that the dependencies for this project will be staged into
     */
+    @Internal
    File getGemDir() {
        return prepareTask.outputDir
    }
@ -83,6 +84,7 @@ class JRubyJar extends Jar {
     * modifies the jrubyVersion on the project after we have instantiated, that we still
     * respect this setting
     * */
+    @Input
    String getJrubyVersion() {
        if (embeddedJRubyVersion == null) {
            return project.jruby.defaultVersion
--- a/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJarPlugin.groovy
+++ b/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJarPlugin.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyDirInfo.groovy
+++ b/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyDirInfo.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyDirInfoTransformer.groovy
+++ b/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyDirInfoTransformer.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyJarCopyAction.groovy
+++ b/jar-plugin/src/main/groovy/com/github/jrubygradle/jar/internal/JRubyJarCopyAction.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.jar.properties
+++ b/jar-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.jar.properties
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/test/groovy/com/github/jrubygradle/jar/JRubyJarPluginSpec.groovy
+++ b/jar-plugin/src/test/groovy/com/github/jrubygradle/jar/JRubyJarPluginSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/test/groovy/com/github/jrubygradle/jar/JRubyJarSpec.groovy
+++ b/jar-plugin/src/test/groovy/com/github/jrubygradle/jar/JRubyJarSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/jar-plugin/src/test/resources/logback-test.xml
+++ b/jar-plugin/src/test/resources/logback-test.xml
@ -1,6 +1,6 @@
 <!--

-    Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+    Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
        Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.

    Permission is hereby granted, free of charge, to any person obtaining
--- a/war-plugin/build.gradle
+++ b/war-plugin/build.gradle
@ -1,6 +1,4 @@
 description = 'This plugin encapsulates web archive building functionality for JRuby Gradle projects'
-group = rootProject.group
-version = "${rootProject.version}-alpha"


 dependencies {
--- a/war-plugin/src/main/groovy/com/github/jrubygradle/war/JRubyWar.groovy
+++ b/war-plugin/src/main/groovy/com/github/jrubygradle/war/JRubyWar.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/war-plugin/src/main/groovy/com/github/jrubygradle/war/JRubyWarPlugin.groovy
+++ b/war-plugin/src/main/groovy/com/github/jrubygradle/war/JRubyWarPlugin.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/war-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.war.properties
+++ b/war-plugin/src/main/resources/META-INF/gradle-plugins/com.github.jruby-gradle.war.properties
@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+# Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 #     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
--- a/war-plugin/src/test/groovy/com/github/jrubygradle/war/JRubyWarPluginSpec.groovy
+++ b/war-plugin/src/test/groovy/com/github/jrubygradle/war/JRubyWarPluginSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
--- a/war-plugin/src/test/groovy/com/github/jrubygradle/war/JRubyWarSpec.groovy
+++ b/war-plugin/src/test/groovy/com/github/jrubygradle/war/JRubyWarSpec.groovy
@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, R. Tyler Croy <rtyler@brokenco.de>,
+ * Copyright (c) 2014-2020, R. Tyler Croy <rtyler@brokenco.de>,
 *     Schalk Cronje <ysb33r@gmail.com>, Christian Meier, Lookout, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
Author	SHA1	Message	Date
Schalk W. Cronjé	76aa4fb697	Merge pull request #412 from jruby-gradle/master Release 2.1.0-alpha.1	2020-10-30 20:57:00 +01:00
Schalk W. Cronjé	2019d0e6ad	Merge pull request #411 from ysb33r/gradle7 Prepare for Gradle's configuration cache	2020-10-30 20:54:53 +01:00
Schalk Cronje	0e904089c8	Prepare for Gradle's configuration cache - Use the new 1.0.0-alpha.1 Grolifant release that has configuration-cache safety built-in. - Check that no usage of `Project` object will be done after configuration phase has ended. - Maintain compatibility down to Gradle 4.3.	2020-10-29 22:15:06 +01:00
Schalk W. Cronjé	fe46be32c9	Merge pull request #402 from ysb33r/master Finalise 2.0.0 release	2020-01-17 23:38:19 +01:00
Schalk Cronje	5249a5829d	Move ruby.gems() first in order of documentation	2020-01-17 23:20:46 +01:00
Schalk Cronje	d764de4e8e	Update license headers	2020-01-17 23:11:26 +01:00
Schalk Cronje	593f096279	Set version to 2.0.0	2020-01-17 19:23:26 +01:00
Schalk Cronje	6e1be93181	Describe repositories and GEM resolver strategy customisation (#378 )	2020-01-17 19:19:04 +01:00
Schalk Cronje	60829c7ce4	Support JRuby Maven GEM proxy (#401 )	2020-01-17 18:55:48 +01:00
Schalk W. Cronjé	814c36b2a5	Merge pull request #400 from ysb33r/master Do not include pre-release GEMs by the default	2019-12-25 19:17:43 +01:00
Schalk Cronje	6fdc2e28bc	Do not include pre-release GEMs by default (#393 )	2019-12-25 01:06:45 +01:00
Schalk Cronje	fb47d655cb	Remove Torquebox	2019-12-24 22:27:15 +01:00
Schalk Cronje	8f782494cb	Add Guillaume Grossetie to author credits	2019-12-24 21:42:41 +01:00
Schalk Cronje	836837ca4a	Static compile JRubyExec	2019-12-24 21:42:13 +01:00
Schalk Cronje	a32280d3e0	Revert accidental changed deprecation text messages	2019-12-24 21:06:26 +01:00
Schalk Cronje	7e130116f1	Proposed JRuby version can be optional	2019-12-24 16:14:31 +01:00
Schalk W. Cronjé	b308fd2b0d	Merge pull request #399 from ysb33r/master If the plugin version changes, resolve all dependencies again (#398)	2019-12-24 15:36:50 +01:00
Schalk Cronje	d57e2f42de	If the plugin version changes, resolve all dependencies again (#398 )	2019-12-24 15:19:44 +01:00
Schalk Cronje	7fe59b4621	Prepare to release 2.0.0-alpha.4	2019-12-23 13:53:05 +01:00
Schalk W. Cronjé	2ffe92f845	Merge pull request #396 from Mogztter/issue-394-gem-resolution resolves #394 fix gem requirements resolution	2019-12-23 13:51:51 +01:00
Schalk W. Cronjé	c264d2de8e	Merge pull request #395 from Mogztter/patch-1 HACKING file is an AsciiDoc document	2019-12-23 13:50:53 +01:00
Guillaume Grossetie	1545885ecf	resolves #394 fix gem requirements resolution	2019-12-22 21:40:02 +01:00
Guillaume Grossetie	01c7f95c92	HACKING file is an AsciiDoc document	2019-12-22 10:56:52 +01:00
Schalk W. Cronjé	d8f1358065	Merge pull request #392 from ysb33r/master Release 2.0.0-alpha.3	2019-12-20 18:22:21 +01:00
Schalk Cronje	ac7db6fe24	Only initialise default jruby version in the project extension (#390 )	2019-12-20 18:06:40 +01:00
Schalk Cronje	00522b2cca	Always use the java version of a GEM (#391 )	2019-12-20 18:03:06 +01:00
Schalk Cronje	44c14bb7f9	Update release process	2019-12-19 23:59:08 +01:00
Schalk W. Cronjé	6dff6c3504	Merge pull request #389 from ysb33r/master Remove Torquebox	2019-12-19 23:50:38 +01:00
Schalk Cronje	a8ffdf8954	Remove all dependency on Torquebox (#388 )	2019-12-19 23:28:05 +01:00
Schalk Cronje	a7d119e7a4	Merge branch 'master' of https://github.com/jruby-gradle/jruby-gradle-plugin	2019-12-19 14:18:21 +01:00
Schalk Cronje	0d2ccce53e	Remove deprecation warnings related to Gradle 5	2019-12-19 12:07:47 +01:00