anchor.diff:  
     buildInputs = [
       pcre
  -    python2
       python3
       zlib
     ] ++ (if stdenv.hostPlatform.isDarwin then [
  
positive.code: , gsettings-desktop-schemas
  , glib
  , makeWrapper
  , python2
  , python3
  , SystemConfiguration
  , CoreFoundation
  
negative.code:     sha256 = "10swd3x576pinx33iwsbd4h15fbh2snmfxzcmab4c56nb08qlbrs";
    };
  
    outputs = [ "out" "dev" "py3" ];
  
    nativeBuildInputs = [
      pkgconfig
  