{ crossenv, xorg-macros, xextproto }:

let
  version = "2017-01-26";

  name = "fixesproto-${version}";

  src = crossenv.nixpkgs.fetchgit {
    url = "https://anongit.freedesktop.org/git/xorg/proto/fixesproto";
    rev = "4292ec1c63180c5f4e7c0e606fa68c51913f172b";
    sha256 = "0mmx4cmkbrsmbq1j58g8gcx4h3qz9y4xbjpz7jcl7crki7zrz3kx";
  };

  lib = crossenv.native.make_derivation rec {
    inherit version name src;

    builder = ./builder.sh;

    native_inputs = [
      crossenv.nixpkgs.autoconf
      crossenv.nixpkgs.automake
    ];

    ACLOCAL_PATH = "${xorg-macros}/lib/aclocal";

    inherit xextproto;
  };

  license = crossenv.native.make_derivation {
    name = "${name}-license";
    inherit src;
    builder = ./license_builder.sh;
  };

  license_set =
    xorg-macros.license_set //
    xextproto.license_set //
    { "${name}" = license; };

in
  lib // { inherit license_set; }