anchor.diff:      gtk3
       inkscape
       optipng
  +    python3
     ];
   
     buildInputs = [
  
positive.code:   ];
  
    postPatch = ''
      for file in $(find -name render-\*.sh); do
        patchShebangs "$file"
  
        substituteInPlace "$file" \
          --replace 'INKSCAPE="/usr/bin/inkscape"' \
                    'INKSCAPE="inkscape"' \
  
negative.code: , gtk-engine-murrine
  , gdk-pixbuf
  , librsvg
  , python3
  }:
  
  stdenv.mkDerivation rec {
    pname = "pop-gtk-theme";
    version = "2020-04-22";
  
    src = fetchFromGitHub {
      owner = "pop-os";
      repo = "gtk-theme";
      rev = "b3f98dfd61cfff81f69cdc7f57bce7a9efaa36f4";
      sha256 = "0vhcc694x33sgcpbqkrc5bycbd7017k4iii0mjjxgd22jd5lzgkb";
    };
  
    nativeBuildInputs = [
  