anchor.diff:  stdenv.mkDerivation rec {
     version = "0.11.1";
     name    = "openspace-${version}";
  -  
  +
     src = fetchFromGitHub {
       owner  = "OpenSpace";
       repo   = "OpenSpace";
  
positive.code:       "-DCMAKE_INSTALL_PREFIX=${bundle}"
      )
    '';
    
    preInstall = ''
      mkdir -p $out/bin
      mkdir -p ${bundle}
    '';
    
    postInstall = ''
      cp ext/spice/libSpice.so       ${bundle}/lib
      cp ext/ghoul/ext/lua/libLua.so ${bundle}/lib
    '';
    
    postFixup = ''
      for bin in ${bundle}/bin/*
      do
        rpath=$(patchelf --print-rpath $bin)
        patchelf --set-rpath $rpath:${bundle}/lib $bin
        
        name=$(basename $bin)
        makeWrapper $bin $out/bin/$name --run "cd ${bundle}"
      done
    '';
    
    meta = {
      description     = "Open-source astrovisualization project";
      longDescription = ''
  
negative.code:     sha256 = "0msqixf30r0d41xmfmzkdfw6w9jkx2ph5clq8xiwrg1jc3z9q7nv";
      fetchSubmodules = true;
    };
  
    buildInputs = [
      makeWrapper cmake
      curl boost gdal glew soil
      libX11 libXi libXxf86vm libXcursor libXrandr libXinerama
    ];
  
    glmPlatformH = fetchurl {
      url    = "https://raw.githubusercontent.com/g-truc/glm/dd48b56e44d699a022c69155c8672caacafd9e8a/glm/simd/platform.h";
      sha256 = "0y91hlbgn5va7ijg5mz823gqkq9hqxl00lwmdwnf8q2g086rplzw";
    };
  
    # See <https://github.com/g-truc/glm/issues/726>
    prePatch = ''
      cp ${glmPlatformH} ext/sgct/include/glm/simd/platform.h
      cp ${glmPlatformH} ext/ghoul/ext/glm/glm/simd/platform.h
    '';
  
    patches = [
      # See <https://github.com/opensgct/sgct/issues/13>
      ./vrpn.patch
  
      ./constexpr.patch
      ./config.patch
  
      # WARNING: This patch disables some slow torrents in a very dirty way.
      ./assets.patch
    ];
  
    bundle = "$out/usr/share/openspace";
  
    preConfigure = ''
      cmakeFlagsArray=(
        $cmakeFlagsArray
  