anchor.diff:  
       # R24
       erlangR24 = self.beamLib.callErlang ../development/interpreters/erlang/R24.nix {
  -      wxGTK = wxGTK30;
  +      wxGTK = wxGTK32;
         # Can be enabled since the bug has been fixed in https://github.com/erlang/otp/pull/2508
         parallelBuild = true;
         autoconf = buildPackages.autoconf269;
  
positive.code:     # R21
      erlangR21 = self.beamLib.callErlang ../development/interpreters/erlang/R21.nix {
        openssl = openssl_1_1;
        wxGTK = wxGTK30;
        autoconf = buildPackages.autoconf269;
        inherit wxSupport systemdSupport;
      };
  
negative.code: { beam
  , callPackage
  , openssl_1_1
  , wxGTK32
  , buildPackages
  , stdenv
  , wxSupport ? true
  