anchor.diff:  
         # This is to ensure expansion of $out.
         libExecPath="${libExecPath}"
  -      python build/linux/unbundle/replace_gn_files.py \
  -        --system-libraries ${toString gnSystemLibraries}
  +      python build/linux/unbundle/replace_gn_files.py --system-libraries ${toString gnSystemLibraries}
         ${gnChromium}/bin/gn gen --args=${escapeShellArg gnFlags} out/Release | tee gn-gen-outputs.txt
   
         # Fail if `gn gen` contains a WARNING.
  
positive.code: 
  with stdenv.lib;
  
  # see http://www.linuxfromscratch.org/blfs/view/cvs/xsoft/chromium.html
  
  let
    jre = jre8; # TODO: remove override https://github.com/NixOS/nixpkgs/pull/89731
  
  
negative.code:       toFlag = key: value: "${key}=${sanitize value}";
      in attrs: concatStringsSep " " (attrValues (mapAttrs toFlag attrs));
  
    # https://source.chromium.org/chromium/chromium/src/+/master:build/linux/unbundle/replace_gn_files.py
    gnSystemLibraries = [
      "ffmpeg"
      "flac"
  