haskell-generic-builder: pass "--with-gcc=$CC" on Darwin to help Cabal find Clang

Suggested in https://github.com/NixOS/nixpkgs/pull/5746.
2015-01-13 21:34:23 +01:00 · 2015-01-13 21:34:23 +01:00 · 67312f83ad
commit 67312f83ad
parent 07966befee
1 changed files with 2 additions and 0 deletions
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@ -117,6 +117,8 @@ stdenv.mkDerivation ({
    ${optionalString (versionOlder "7.8" ghc.version && !isLibrary) ''
      configureFlags+=" --ghc-option=-j$NIX_BUILD_CORES"
      setupCompileFlags="-j$NIX_BUILD_CORES"
+    ''}${optionalString stdenv.isDarwin ''
+      configureFlags+=" --with-gcc=$CC"  # Cabal won't find clang without help.
    ''}

    packageConfDir="$TMP/package.conf.d"