anchor.diff:  { stdenv, lib, fetchgit, makeDesktopItem, pkgconfig, makeWrapper
   # Build
  -, python2, autoconf213, yasm, perl, ccache
  +, python2, autoconf213, yasm, perl
   , unzip, gnome2, gnum4
   
   # Runtime
  
positive.code:   };
  
    nativeBuildInputs = [
      gnum4 makeWrapper perl pkgconfig python2 ccache
    ];
  
    buildInputs = [
  
negative.code:   configurePhase = ''
      export MOZCONFIG=$PWD/.mozconfig
      export MOZ_NOSPAM=1
  
      cp $src/doc/mozconfig.example $MOZCONFIG
      # Need to modify it
  