nixpkgs/pkgs/development/compilers/ghcjs/head_shims.nix

{ fetchFromGitHub }:
fetchFromGitHub {
  owner = "ghcjs";
  repo = "shims";
  rev = "f67394c559ac921a768b12f141499119563b8bf3";
  sha256 = "1lz86qmkxkfch1yk9a62admw7jsd34sqcrskgpq28hbhjpgzf1lv";
}