Fix #60125 - buildRustCrate: Always set CARGO_PKG_VERSION_PRE and CARGO_PKG_HOMEPAGE

(as cargo does)

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

@@ -6,6 +6,7 @@
 , completeDeps
 , crateAuthors
 , crateDescription
+, crateHomepage
 , crateFeatures
 , crateName
 , crateVersion
@@ -91,12 +92,11 @@ in ''
   export CARGO_PKG_VERSION_MAJOR=${builtins.elemAt version 0}
   export CARGO_PKG_VERSION_MINOR=${builtins.elemAt version 1}
   export CARGO_PKG_VERSION_PATCH=${builtins.elemAt version 2}
+  export CARGO_PKG_VERSION_PRE="${versionPre}"
+  export CARGO_PKG_HOMEPAGE="${crateHomepage}"
   export NUM_JOBS=1
   export RUSTC="rustc"
   export RUSTDOC="rustdoc"
-  if [[ -n "${versionPre}" ]]; then
-    export CARGO_PKG_VERSION_PRE="${versionPre}"
-  fi
 
   BUILD=""
   if [[ ! -z "${build}" ]] ; then

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

@@ -131,6 +131,7 @@ stdenv.mkDerivation (rec {
     crateVersion = crate.version;
     crateDescription = crate.description or "";
     crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [];
+    crateHomepage = crate.homepage or "";
     crateType =
       if lib.attrByPath ["procMacro"] false crate then ["proc-macro"] else
       if lib.attrByPath ["plugin"] false crate then ["dylib"] else
@@ -144,7 +145,7 @@ stdenv.mkDerivation (rec {
       inherit crateName buildDependencies completeDeps completeBuildDeps crateDescription
               crateFeatures libName build workspace_member release libPath crateVersion
               extraLinkFlags extraRustcOpts
-              crateAuthors verbose colors target_os;
+              crateAuthors crateHomepage verbose colors target_os;
     };
     buildPhase = buildCrate {
       inherit crateName dependencies