anchor.diff:      cp -rv ${sources.data}/* $out/share/minetest/games/minetest_game/
     '';
   
  -  meta = {
  -    homepage = "http://minetest.net/";
  +  meta = with stdenv.lib; {
  +    homepage = http://minetest.net/;
       description = "Infinite-world block sandbox game";
  -    license = stdenv.lib.licenses.lgpl21Plus;
  +    license = licenses.lgpl21Plus;
  +    platforms = platforms.linux;
  +    maintainers = with maintainers; [ jgeerds ];
     };
   }
  
positive.code:   src = sources.src;
  
    cmakeFlags = [
      "-DIRRLICHT_INCLUDE_DIR=${irrlicht3843}/include/irrlicht"
    ];
  
    buildInputs = [
      cmake irrlicht3843 libpng bzip2 libjpeg
      libXxf86vm mesa openal libvorbis x11
    ];
  
    postInstall = ''
  
negative.code: { stdenv, fetchgit, cmake, irrlicht, libpng, bzip2, curl, libogg, jsoncpp
  , libjpeg, libXxf86vm, mesa, openal, libvorbis, x11, sqlite }:
  
  let
    version = "0.4.12";
    sources = {
      src = fetchgit {
        url = "https://github.com/minetest/minetest.git";
        rev = "7993a403f2c17a215e4895ba1848aaf69bb61980";
        sha256 = "04v6fd9r9by8g47xbjzkhkgac5zpik01idngbbx2in4fxrg3ac7c";
      };
      data = fetchgit {
        url = "https://github.com/minetest/minetest_game.git";
        rev = "03c00a831d5c2fd37096449bee49557879068af1";
        sha256 = "1qqhlfz296rmi3mmlvq1rwv7hq5w964w1scry095xaih7y11ycmk";
      };
    };
  in stdenv.mkDerivation {
  