hugs: Fix build failure

{

  lib,

  stdenv,

  fetchurl,

  fetchFromGitHub,

  bison,

}:

stdenv.mkDerivation rec {

stdenv.mkDerivation {

  pname = "hugs98";

  version = "2006-09";

  src = fetchurl {

    url = "https://www.haskell.org/hugs/downloads/${version}/hugs98-Sep2006.tar.gz";

    sha256 = "1dj65c39zpy6qqvvrwns2hzj6ipnd4ih655xj7kgyk2nfdvd5x1w";

  src = fetchFromGitHub {

    owner = "augustss";

    repo = "hugs98-plus-Sep2006";

    rev = "1f7b60e05b12df00d715d535bb01c189bc1b9b3c";

    hash = "sha256-g6/4kmdWKGDIu5PXVfP8O6Fl3v4bstXWAVkoxZiS6qo=";

  };

  patches = [

    (fetchurl {

      url = "https://aur.archlinux.org/cgit/aur.git/plain/hsbase_inline.patch?h=hugs";

      name = "hsbase_inline.patch";

      sha256 = "1h0sp16d17hlm6gj7zdbgwrjwi2l4q02m8p0wd60dp4gn9i9js0v";

    })

  ];

  nativeBuildInputs = [ bison ];

  NIX_CFLAGS_COMPILE = [

    "-Wno-error=implicit-int"

    "-Wno-error=implicit-function-declaration"

  ];

  postUnpack = "find -type f -exec sed -i 's@/bin/cp@cp@' {} +";

  preConfigure = "unset STRIP";

  ];

  meta = with lib; {

    broken = stdenv.hostPlatform.isDarwin;

    mainProgram = "hugs";

    homepage = "https://www.haskell.org/hugs";

    description = "Haskell interpreter";