nixos/system/home/emacs/luarocks/xsys.nix

{
  buildLuarocksPackage,
  fetchurl,
  luaAtLeast,
  luaOlder,
  luajit,
}:
buildLuarocksPackage {
  pname = "xsys";
  version = "1.0.2-1";
  knownRockspec =
    (fetchurl {
      url = "mirror://luarocks/xsys-1.0.2-1.rockspec";
      sha256 = "0jlyrwbzh6fi68msdynp4bbihyww4i3yk0qh859xlwqhfy5cza7p";
    }).outPath;
  src = fetchurl {
    url = "https://github.com/stepelu/lua-xsys/archive/v1.0.2.tar.gz";
    sha256 = "1zwrlp6bghq8c12kyqc1ic7mrn8lf3d42755h8q2wxwhy1i3xqyh";
  };

  disabled = (luaOlder "5.1") || (luaAtLeast "5.4");
  propagatedBuildInputs = [ luajit ];

  meta = {
    homepage = "http://scilua.org/xsys.html";
    description = "LuaJIT General Purpose Routines";
    license.fullName = "MIT";
  };
}