nixpkgs/pkgs/development/libraries/grail/default.nix


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{ enableX11 ? true,
  lib, stdenv, fetchurl, pkg-config, xorg, python3, frame }:

stdenv.mkDerivation rec {
  pname = "grail";
  version = "3.1.1";

  src = fetchurl {
    url = "https://launchpad.net/grail/trunk/${version}/+download/${pname}-${version}.tar.bz2";
    sha256 = "1wwx5ibjdz5pyd0f5cd1n91y67r68dymxpm2lgd829041xjizvay";
  };

  nativeBuildInputs = [ pkg-config ];
  buildInputs = [ python3 frame ]
  ++ lib.optionals enableX11 [xorg.libX11 xorg.libXtst xorg.libXext xorg.libXi xorg.libXfixes];

  configureFlags = lib.optional enableX11 "--with-x11";

  meta = {
    homepage = "https://launchpad.net/canonical-multitouch/grail";
    description = "Gesture Recognition And Instantiation Library";
    license = lib.licenses.gpl2;
    platforms = lib.platforms.linux;
  };
}