anchor.diff:  
   with stdenv.lib;
   let
  -  inherit (python2Packages) python dbus-python;
  +  inherit (python3Packages) python dbus-python;
     shouldUsePkg = pkg: if pkg != null && stdenv.lib.any (stdenv.lib.meta.platformMatch stdenv.hostPlatform) pkg.meta.platforms then pkg else null;
   
     libOnly = prefix == "lib";
  
positive.code: { stdenv, fetchFromGitHub, pkgconfig, python2Packages, makeWrapper
  , fetchpatch
  , bash, libsamplerate, libsndfile, readline, eigen, celt
  , wafHook
  # Darwin Dependencies
  
negative.code: in
  stdenv.mkDerivation rec {
    name = "${prefix}jack2-${version}";
    version = "1.9.14";
  
    src = fetchFromGitHub {
      owner = "jackaudio";
      repo = "jack2";
      rev = "v${version}";
      sha256 = "1prxg1l8wrxfp2mh7l4mvjvmml6816fciq1la88ylhwm1qnfvnax";
    };
  
    nativeBuildInputs = [ pkgconfig python makeWrapper wafHook ];
  