anchor.diff:      ocamlPackages.lwt_react
       ocamlPackages.tls
       combyKernel
  +    combySemantic
     ] ++ (if !stdenv.isAarch32 && !stdenv.isAarch64 then
       [ ocamlPackages.hack_parallel ]
     else
  
positive.code:     };
  
    combyKernel = mkCombyPackage { pname = "comby-kernel"; };
  in mkCombyPackage {
    pname = "comby";
  
    extraBuildInputs = [
  
negative.code: { ocamlPackages
  , fetchFromGitHub
  , lib
  , zlib
  , pkg-config
  , cacert
  , gmp
  , libev
  , autoconf
  , sqlite
  , stdenv
  }:
  let
    mkCombyPackage = { pname, extraBuildInputs ? [ ], extraNativeInputs ? [ ] }:
      ocamlPackages.buildDunePackage rec {
  