{ mkDerivation, base, directory, filepath, ghc-platform, lib
, process, text, transformers
  # GHC source tree to build ghc-toolchain from
, ghcVersion
, ghcSrc
}:
mkDerivation {
  pname = "ghc-toolchain";
  version = ghcVersion;
  src = ghcSrc;
  postUnpack = ''
    sourceRoot="$sourceRoot/utils/ghc-toolchain"
  '';
  libraryHaskellDepends = [
    base directory filepath ghc-platform process text transformers
  ];
  description = "Utility for managing GHC target toolchains";
  license = lib.licenses.bsd3;
}