anchor.diff:          xorg.libXinerama
           xorg.libXfixes
           libpng12
  -        libidn
  +        libidn_134
           zlib
           gtk_engines
           freetype
  
positive.code: }:
  
  let
    versionInfo = {
      "13.4.0" = rec {
        major     = "13";
  
negative.code: { stdenv
  , lib
  , fetchurl
  , requireFile
  , makeWrapper
  , libredirect
  