Allow publishing with dev-dependencies without a version.

src/cargo/ops/cargo_package.rs

@@ -206,7 +206,7 @@ fn check_metadata(pkg: &Package, config: &Config) -> CargoResult<()> {
 // Checks that the package dependencies are safe to deploy.
 fn verify_dependencies(pkg: &Package) -> CargoResult<()> {
     for dep in pkg.dependencies() {
-        if dep.source_id().is_path() && !dep.specified_req() {
+        if dep.source_id().is_path() && !dep.specified_req() && dep.is_transitive() {
             failure::bail!(
                 "all path dependencies must have a version specified \
                  when packaging.\ndependency `{}` does not specify \

src/cargo/ops/registry.rs

@@ -116,6 +116,10 @@ fn verify_dependencies(
     for dep in pkg.dependencies().iter() {
         if dep.source_id().is_path() || dep.source_id().is_git() {
             if !dep.specified_req() {
+                if !dep.is_transitive() {
+                    // dev-dependencies will be stripped in TomlManifest::prepare_for_publish
+                    continue;
+                }
                 let which = if dep.source_id().is_path() {
                     "path"
                 } else {
@@ -172,6 +176,10 @@ fn transmit(
     let deps = pkg
         .dependencies()
         .iter()
+        .filter(|dep| {
+            // Skip dev-dependency without version.
+            dep.is_transitive() || dep.specified_req()
+        })
         .map(|dep| {
             // If the dependency is from a different registry, then include the
             // registry in the dependency.

src/cargo/util/toml/mod.rs

@@ -722,6 +722,7 @@ impl TomlManifest {
             .unwrap()
             .clone();
         package.workspace = None;
+        let all = |_d: &TomlDependency| true;
         return Ok(TomlManifest {
             package: Some(package),
             project: None,
@@ -731,12 +732,13 @@ impl TomlManifest {
             example: self.example.clone(),
             test: self.test.clone(),
             bench: self.bench.clone(),
-            dependencies: map_deps(config, self.dependencies.as_ref())?,
+            dependencies: map_deps(config, self.dependencies.as_ref(), all)?,
             dev_dependencies: map_deps(
                 config,
                 self.dev_dependencies
                     .as_ref()
                     .or_else(|| self.dev_dependencies2.as_ref()),
+                TomlDependency::is_version_specified,
             )?,
             dev_dependencies2: None,
             build_dependencies: map_deps(
@@ -744,6 +746,7 @@ impl TomlManifest {
                 self.build_dependencies
                     .as_ref()
                     .or_else(|| self.build_dependencies2.as_ref()),
+                all,
             )?,
             build_dependencies2: None,
             features: self.features.clone(),
@@ -754,12 +757,13 @@ impl TomlManifest {
                         Ok((
                             k.clone(),
                             TomlPlatform {
-                                dependencies: map_deps(config, v.dependencies.as_ref())?,
+                                dependencies: map_deps(config, v.dependencies.as_ref(), all)?,
                                 dev_dependencies: map_deps(
                                     config,
                                     v.dev_dependencies
                                         .as_ref()
                                         .or_else(|| v.dev_dependencies2.as_ref()),
+                                    TomlDependency::is_version_specified,
                                 )?,
                                 dev_dependencies2: None,
                                 build_dependencies: map_deps(
@@ -767,6 +771,7 @@ impl TomlManifest {
                                     v.build_dependencies
                                         .as_ref()
                                         .or_else(|| v.build_dependencies2.as_ref()),
+                                    all,
                                 )?,
                                 build_dependencies2: None,
                             },
@@ -788,6 +793,7 @@ impl TomlManifest {
         fn map_deps(
             config: &Config,
             deps: Option<&BTreeMap<String, TomlDependency>>,
+            filter: impl Fn(&TomlDependency) -> bool,
         ) -> CargoResult<Option<BTreeMap<String, TomlDependency>>> {
             let deps = match deps {
                 Some(deps) => deps,
@@ -795,6 +801,7 @@ impl TomlManifest {
             };
             let deps = deps
                 .iter()
+                .filter(|(_k, v)| filter(v))
                 .map(|(k, v)| Ok((k.clone(), map_dependency(config, v)?)))
                 .collect::<CargoResult<BTreeMap<_, _>>>()?;
             Ok(Some(deps))
@@ -1221,11 +1228,7 @@ impl TomlManifest {
                 spec.set_url(CRATES_IO_INDEX.parse().unwrap());
             }
 
-            let version_specified = match *replacement {
-                TomlDependency::Detailed(ref d) => d.version.is_some(),
-                TomlDependency::Simple(..) => true,
-            };
-            if version_specified {
+            if replacement.is_version_specified() {
                 bail!(
                     "replacements cannot specify a version \
                      requirement, but found one for `{}`",
@@ -1330,6 +1333,13 @@ impl TomlDependency {
             TomlDependency::Detailed(ref details) => details.to_dependency(name, cx, kind),
         }
     }
+
+    fn is_version_specified(&self) -> bool {
+        match self {
+            TomlDependency::Detailed(d) => d.version.is_some(),
+            TomlDependency::Simple(..) => true,
+        }
+    }
 }
 
 impl DetailedTomlDependency {

src/doc/man/cargo-package.adoc

@@ -21,6 +21,7 @@ steps:
 . Load and check the current workspace, performing some basic checks.
     - Path dependencies are not allowed unless they have a version key. Cargo
       will ignore the path key for dependencies in published packages.
+      `dev-dependencies` do not have this restriction.
 . Create the compressed `.crate` file.
     - The original `Cargo.toml` file is rewritten and normalized.
     - `[patch]`, `[replace]`, and `[workspace]` sections are removed from the

src/doc/man/generated/cargo-package.html

@@ -27,7 +27,8 @@ steps:</p>
 <ul>
 <li>
 <p>Path dependencies are not allowed unless they have a version key. Cargo
-will ignore the path key for dependencies in published packages.</p>
+will ignore the path key for dependencies in published packages.
+<code>dev-dependencies</code> do not have this restriction.</p>
 </li>
 </ul>
 </div>

src/etc/man/cargo-package.1

@@ -1,13 +1,13 @@
 '\" t
 .\"     Title: cargo-package
 .\"    Author: [see the "AUTHOR(S)" section]
-.\" Generator: Asciidoctor 2.0.8
-.\"      Date: 2019-07-15
+.\" Generator: Asciidoctor 2.0.10
+.\"      Date: 2019-09-05
 .\"    Manual: \ \&
 .\"    Source: \ \&
 .\"  Language: English
 .\"
-.TH "CARGO\-PACKAGE" "1" "2019-07-15" "\ \&" "\ \&"
+.TH "CARGO\-PACKAGE" "1" "2019-09-05" "\ \&" "\ \&"
 .ie \n(.g .ds Aq \(aq
 .el       .ds Aq '
 .ss \n[.ss] 0
@@ -59,6 +59,7 @@ Load and check the current workspace, performing some basic checks.
 .\}
 Path dependencies are not allowed unless they have a version key. Cargo
 will ignore the path key for dependencies in published packages.
+\fBdev\-dependencies\fP do not have this restriction.
 .RE
 .RE
 .sp

tests/testsuite/publish.rs

@@ -1178,3 +1178,68 @@ fn publish_git_with_version() {
         ],
     );
 }
+
+#[cargo_test]
+fn publish_dev_dep_no_version() {
+    registry::init();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+            [package]
+            name = "foo"
+            version = "0.1.0"
+            authors = []
+            license = "MIT"
+            description = "foo"
+            documentation = "foo"
+            homepage = "foo"
+            repository = "foo"
+
+            [dev-dependencies]
+            bar = { path = "bar" }
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
+        .file("bar/src/lib.rs", "")
+        .build();
+
+    p.cargo("publish --no-verify --index")
+        .arg(registry_url().to_string())
+        .with_stderr(
+            "\
+[UPDATING] [..]
+[PACKAGING] foo v0.1.0 [..]
+[UPLOADING] foo v0.1.0 [..]
+",
+        )
+        .run();
+
+    publish::validate_upload(
+        r#"
+        {
+          "authors": [],
+          "badges": {},
+          "categories": [],
+          "deps": [],
+          "description": "foo",
+          "documentation": "foo",
+          "features": {},
+          "homepage": "foo",
+          "keywords": [],
+          "license": "MIT",
+          "license_file": null,
+          "links": null,
+          "name": "foo",
+          "readme": null,
+          "readme_file": null,
+          "repository": "foo",
+          "vers": "0.1.0"
+        }
+        "#,
+        "foo-0.1.0.crate",
+        &["Cargo.toml", "Cargo.toml.orig", "src/lib.rs"],
+    );
+}