anchor.diff:    configureScript = "./configure.sh";
     dontAddPrefix = "true";
     dontAddStaticConfigureFlags = true;
  -  configurePlatforms = [];
  +  configurePlatforms = [ ];
   
     propagatedBuildInputs = [ camlzip extlib ];
   
  
positive.code: else
  
  stdenv.mkDerivation rec {
    name = "ocaml${ocaml.version}-javalib-${version}";
    version = "3.2.1";
  
    src = fetchzip {
      url = "https://github.com/javalib-team/javalib/archive/v${version}.tar.gz";
      sha256 = "1fkdaiiza145yv0r1cm0n2hsrr0rbn6b27vs66njgv405zwn3vbn";
    };
  
    buildInputs = [ which ocaml findlib ];
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , which
  , ocaml
  , findlib
  , camlzip
  , extlib
  }:
  
  if !lib.versionAtLeast ocaml.version "4.04"
  