core/pkgs/build-support/ocaml/oasis.nix

{ lib, stdenv, ocaml_oasis, ocaml, findlib, ocamlbuild }:

{ pname, version, nativeBuildInputs ? [ ]
, meta ? { platforms = ocaml.meta.platforms or [ ]; }
, minimumOCamlVersion ? null, createFindlibDestdir ? true, dontStrip ? true, ...
}@args:

if args ? minimumOCamlVersion
&& lib.versionOlder ocaml.version args.minimumOCamlVersion then
  throw "${pname}-${version} is not available for OCaml ${ocaml.version}"
else

  stdenv.mkDerivation (args // {
    name = "ocaml${ocaml.version}-${pname}-${version}";

    nativeBuildInputs = [ ocaml findlib ocamlbuild ocaml_oasis ]
      ++ nativeBuildInputs;

    inherit createFindlibDestdir;
    inherit dontStrip;

    strictDeps = true;

    buildPhase = ''
      runHook preBuild
      oasis setup
      ocaml setup.ml -configure --prefix $OCAMLFIND_DESTDIR --exec-prefix $out
      ocaml setup.ml -build
      runHook postBuild
    '';

    checkPhase = ''
      runHook preCheck
      ocaml setup.ml -test
      runHook postCheck
    '';

    installPhase = ''
      runHook preInstall
      mkdir -p $out
      ocaml setup.ml -install
      runHook postInstall
    '';

  })