Reuse crate-io constant

src/cargo/core/compiler/rustdoc.rs

@@ -11,6 +11,8 @@ use std::fmt;
 use std::hash;
 use url::Url;
 
+const DOCS_RS_URL: &'static str = "https://docs.rs/";
+
 /// Mode used for `std`.
 #[derive(Debug, Hash)]
 pub enum RustdocExternMode {
@@ -63,7 +65,7 @@ pub struct RustdocExternMap {
 impl Default for RustdocExternMap {
     fn default() -> Self {
         let mut registries = HashMap::new();
-        registries.insert("crates-io".into(), "https://docs.rs/".into());
+        registries.insert(CRATES_IO_REGISTRY.into(), DOCS_RS_URL.into());
         Self {
             registries,
             std: None,
@@ -76,8 +78,8 @@ fn default_crates_io_to_docs_rs<'de, D: serde::Deserializer<'de>>(
 ) -> Result<HashMap<String, String>, D::Error> {
     use serde::Deserialize;
     let mut registries = HashMap::deserialize(de)?;
-    if !registries.contains_key("crates-io") {
-        registries.insert("crates-io".into(), "https://docs.rs/".into());
+    if !registries.contains_key(CRATES_IO_REGISTRY) {
+        registries.insert(CRATES_IO_REGISTRY.into(), DOCS_RS_URL.into());
     }
     Ok(registries)
 }

src/cargo/core/source/source_id.rs

@@ -1,6 +1,6 @@
 use crate::core::PackageId;
-use crate::sources::DirectorySource;
-use crate::sources::{GitSource, PathSource, RegistrySource, CRATES_IO_INDEX};
+use crate::sources::{DirectorySource, CRATES_IO_DOMAIN, CRATES_IO_INDEX};
+use crate::sources::{GitSource, PathSource, RegistrySource};
 use crate::util::{CanonicalUrl, CargoResult, Config, IntoUrl};
 use log::trace;
 use serde::de;
@@ -224,7 +224,7 @@ impl SourceId {
 
     pub fn display_registry_name(self) -> String {
         if self.is_default_registry() {
-            "crates.io".to_string()
+            CRATES_IO_DOMAIN.to_string()
         } else if let Some(name) = &self.inner.name {
             name.clone()
         } else {

src/cargo/ops/mod.rs

@@ -1,3 +1,5 @@
+use crate::sources::CRATES_IO_DOMAIN;
+
 pub use self::cargo_clean::{clean, CleanOptions};
 pub use self::cargo_compile::{
     compile, compile_with_exec, compile_ws, create_bcx, print, resolve_all_features, CompileOptions,
@@ -66,7 +68,7 @@ fn check_dep_has_version(dep: &crate::core::Dependency, publish: bool) -> crate:
 
     if !dep.specified_req() && dep.is_transitive() {
         let dep_version_source = dep.registry_id().map_or_else(
-            || "crates.io".to_string(),
+            || CRATES_IO_DOMAIN.to_string(),
             |registry_id| registry_id.display_registry_name(),
         );
         anyhow::bail!(

src/cargo/ops/registry.rs

@@ -20,7 +20,7 @@ use crate::core::resolver::CliFeatures;
 use crate::core::source::Source;
 use crate::core::{Package, SourceId, Workspace};
 use crate::ops;
-use crate::sources::{RegistrySource, SourceConfigMap, CRATES_IO_REGISTRY};
+use crate::sources::{RegistrySource, SourceConfigMap, CRATES_IO_DOMAIN, CRATES_IO_REGISTRY};
 use crate::util::config::{self, Config, SslVersionConfig, SslVersionConfigRange};
 use crate::util::errors::CargoResult;
 use crate::util::important_paths::find_root_manifest_for_wd;
@@ -730,7 +730,7 @@ pub fn registry_login(
         "Login",
         format!(
             "token for `{}` saved",
-            reg.as_ref().map_or("crates.io", String::as_str)
+            reg.as_ref().map_or(CRATES_IO_DOMAIN, String::as_str)
         ),
     )?;
     Ok(())
@@ -738,7 +738,7 @@ pub fn registry_login(
 
 pub fn registry_logout(config: &Config, reg: Option<String>) -> CargoResult<()> {
     let (registry, reg_cfg, _) = registry(config, None, None, reg.clone(), false, false)?;
-    let reg_name = reg.as_deref().unwrap_or("crates.io");
+    let reg_name = reg.as_deref().unwrap_or(CRATES_IO_DOMAIN);
     if reg_cfg.credential_process.is_none() && reg_cfg.token.is_none() {
         config.shell().status(
             "Logout",

src/cargo/ops/vendor.rs

@@ -2,6 +2,7 @@ use crate::core::shell::Verbosity;
 use crate::core::{GitReference, Workspace};
 use crate::ops;
 use crate::sources::path::PathSource;
+use crate::sources::CRATES_IO_REGISTRY;
 use crate::util::{CargoResult, Config};
 use anyhow::{bail, Context as _};
 use cargo_util::{paths, Sha256};
@@ -248,7 +249,7 @@ fn sync(
     // replace original sources with vendor
     for source_id in sources {
         let name = if source_id.is_default_registry() {
-            "crates-io".to_string()
+            CRATES_IO_REGISTRY.to_string()
         } else {
             source_id.url().to_string()
         };

src/cargo/sources/config.rs

@@ -247,7 +247,7 @@ restore the source replacement configuration to continue the build
             check_not_set("tag", def.tag)?;
             check_not_set("rev", def.rev)?;
         }
-        if name == "crates-io" && srcs.is_empty() {
+        if name == CRATES_IO_REGISTRY && srcs.is_empty() {
             srcs.push(SourceId::crates_io(self.config)?);
         }
 

src/cargo/sources/mod.rs

@@ -2,7 +2,7 @@ pub use self::config::SourceConfigMap;
 pub use self::directory::DirectorySource;
 pub use self::git::GitSource;
 pub use self::path::PathSource;
-pub use self::registry::{RegistrySource, CRATES_IO_INDEX, CRATES_IO_REGISTRY};
+pub use self::registry::{RegistrySource, CRATES_IO_DOMAIN, CRATES_IO_INDEX, CRATES_IO_REGISTRY};
 pub use self::replaced::ReplacedSource;
 
 pub mod config;

src/cargo/sources/registry/mod.rs

@@ -184,6 +184,7 @@ use crate::util::{restricted_names, CargoResult, Config, Filesystem, OptVersionR
 const PACKAGE_SOURCE_LOCK: &str = ".cargo-ok";
 pub const CRATES_IO_INDEX: &str = "https://github.com/rust-lang/crates.io-index";
 pub const CRATES_IO_REGISTRY: &str = "crates-io";
+pub const CRATES_IO_DOMAIN: &str = "crates.io";
 const CRATE_TEMPLATE: &str = "{crate}";
 const VERSION_TEMPLATE: &str = "{version}";
 const PREFIX_TEMPLATE: &str = "{prefix}";