anchor.diff:    # Use this rather than `rec { ... }` below for sake of overlays.
     inherit (pkgs.haskell) compiler packages;
   
  -  sphinx = buildPackages.sphinx_offline;
  -
   in {
     lib = haskellLibUncomposable;
   
  
positive.code:     };
      ghcHEAD = callPackage ../development/compilers/ghc/head.nix {
        bootPkgs = packages.ghc8107Binary;
        inherit sphinx;
        # Need to use apple's patched xattr until
        # https://github.com/xattr/xattr/issues/44 and
        # https://github.com/xattr/xattr/issues/55 are solved.
  
negative.code:           packages.ghc8107BinaryMinimal
          else
            packages.ghc8107Binary;
        inherit (buildPackages.python3Packages) sphinx;
        # Need to use apple's patched xattr until
        # https://github.com/xattr/xattr/issues/44 and
        # https://github.com/xattr/xattr/issues/55 are solved.
  