Merge pull request #274440 from bouk/missing-build-rust-env

build-rust-crate: add missing CARGO_PKG env variables

pkgs/build-support/rust/build-rust-crate/configure-crate.nix

···
 , completeBuildDeps
 , completeDeps
 , crateAuthors
-, crateLinks
 , crateDescription
+, crateFeatures
 , crateHomepage
-, crateFeatures
+, crateLicense
+, crateLicenseFile
+, crateLinks
 , crateName
+, crateReadme
 , crateRenames
+, crateRepository
+, crateRustVersion
 , crateVersion
 , extraLinkFlags
 , extraRustcOptsForBuildRs
···
 
   EXTRA_BUILD=""
   BUILD_OUT_DIR=""
+
+  # Set up Cargo Environment variables: https://doc.rust-lang.org/cargo/reference/environment-variables.html
   export CARGO_PKG_NAME=${crateName}
   export CARGO_PKG_VERSION=${crateVersion}
   export CARGO_PKG_AUTHORS="${authors}"
···
   export CARGO_PKG_VERSION_PATCH=${lib.elemAt version 2}
   export CARGO_PKG_VERSION_PRE="${versionPre}"
   export CARGO_PKG_HOMEPAGE="${crateHomepage}"
+  export CARGO_PKG_LICENSE="${crateLicense}"
+  export CARGO_PKG_LICENSE_FILE="${crateLicenseFile}"
+  export CARGO_PKG_README="${crateReadme}"
+  export CARGO_PKG_REPOSITORY="${crateRepository}"
+  export CARGO_PKG_RUST_VERSION="${crateRustVersion}"
   export NUM_JOBS=$NIX_BUILD_CORES
   export RUSTC="rustc"
   export RUSTDOC="rustdoc"

pkgs/build-support/rust/build-rust-crate/default.nix

···
       # Either set to a concrete sub path to the crate root
       # or use `null` for auto-detect.
       workspace_member = crate.workspace_member or ".";
-      crateVersion = crate.version;
+      crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [ ];
       crateDescription = crate.description or "";
-      crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [ ];
       crateHomepage = crate.homepage or "";
+      crateLicense = crate.license or "";
+      crateLicenseFile = crate.license-file or "";
       crateLinks = crate.links or "";
+      crateReadme = crate.readme or "";
+      crateRepository = crate.repository or "";
+      crateRustVersion = crate.rust-version or "";
+      crateVersion = crate.version;
       crateType =
         if lib.attrByPath [ "procMacro" ] false crate then [ "proc-macro" ] else
         if lib.attrByPath [ "plugin" ] false crate then [ "dylib" ] else
···
         inherit crateName buildDependencies completeDeps completeBuildDeps crateDescription
           crateFeatures crateRenames libName build workspace_member release libPath crateVersion crateLinks
           extraLinkFlags extraRustcOptsForBuildRs
+          crateLicense crateLicenseFile crateReadme crateRepository crateRustVersion
           crateAuthors crateHomepage verbose colors codegenUnits;
       };
       buildPhase = buildCrate {