anchor.diff: -{ stdenv
  +{ lib
  +, stdenv
   , fetchFromGitHub
   , scfbuild
   , python3Packages
  
positive.code:     install -Dm644 ${filename} $out/share/fonts/truetype/${filename}
    '';
  
    meta = with stdenv.lib; {
      license = licenses.cc-by-sa-40;
      maintainers = with maintainers; [ fgaz ];
      platforms = platforms.all;
  
negative.code: 
  in stdenv.mkDerivation rec {
    pname = "openmoji";
    version = "13.1.0";
  
    src = fetchFromGitHub {
      owner = "hfg-gmuend";
      repo = pname;
      rev = version;
      sha256 = "sha256-7G6a+LFq79njyPhnDhhSJ98Smw5fWlfcsFj6nWBPsSk=";
    };
  
    nativeBuildInputs = [
  