microhs: add updateScript

  fetchFromGitHub,

  lib,

  writableTmpDirAsHomeHook,

  writeTextDir,

  nix-update-script,

}:

stdenv.mkDerivation (finalAttrs: {

  # The MicroCabal that is installed by `make install` is pregenerated, does not respect MCABAL above, and so is not useable

  postInstall = "rm $out/bin/mcabal";

  passthru.tests = {

  passthru = {

    updateScript = nix-update-script { };

    tests = {

      hello-world = callPackage ./test-hello-world.nix { microhs = finalAttrs.finalPackage; };

    };

  };

  meta = {

    description = "Haskell implemented with combinators";