anchor.diff:      description = "Applicative events and signals for OCaml";
       license = licenses.bsd3;
       platforms = ocaml.meta.platforms;
  -    maintainers = with maintainers; [ z77z vbmithr ];
  +    maintainers = with maintainers; [ z77z vbmithr gal_bolle];
     };
   }
  
positive.code: {stdenv, fetchurl, ocaml, findlib, opam}:
  
  stdenv.mkDerivation {
    name = "ocaml-react-1.0.1";
  
    src = fetchurl {
      url = "http://erratique.ch/software/react/releases/react-1.0.1.tbz";
      sha256 = "007c9kzl0i6xvxnqj9jny4hgm28v9a1i079q53vl5hfb5f7h1mda";
    };
  
    unpackCmd = "tar xjf $src";
  
negative.code: 
    configurePhase = "ocaml pkg/git.ml";
    buildPhase     = "ocaml pkg/build.ml native=true native-dynlink=true";
  
    installPhase   =
    let ocamlVersion = (builtins.parseDrvName (ocaml.name)).version;
    in
     ''
      opam-installer --script --prefix=$out react.install > install.sh
      sed -i s!lib/react!lib/ocaml/${ocamlVersion}/site-lib/react! install.sh
      sh install.sh
    '';
  
  