anchor.diff:    nativeBuildInputs = [
       python2
     ] ++ optionals (config == "mumble") [
  +    makeWrapper
       qt5
     ] ++ optionals (config == "murmur") [
       which
  
positive.code: , fetchgit
  , fetchurl
  , lib
  , python2
  , which
  
  , alsa-lib
  , avahi
  , boost
  
negative.code:     protobuf-cpp
      qt5
    ] ++ optionals (config == "mumble") [
      adwaita-qt
      alsa-lib
      fixesproto
      inputproto
  