anchor.diff:  { lib, stdenv, fetchFromGitHub, cmake, SDL2, SDL2_mixer, SDL2_ttf, libsodium, pkg-config }:
  +
   stdenv.mkDerivation rec {
     pname = "devilutionx";
     version = "1.2.0";
  
positive.code:   '' else ''
      install -Dm755 -t $out/bin devilutionx
      install -Dt $out/share/fonts/truetype ../Packaging/resources/CharisSILB.ttf
  
      # TODO: icons and .desktop (see Packages/{debian,fedora}/*)
    '') + ''
  
negative.code: 
    cmakeFlags = [
      "-DBINARY_RELEASE=ON"
      "-DVERSION_NUM=${version}"
    ];
  
    nativeBuildInputs = [ pkg-config cmake ];
  