1 files changed, 57 insertions, 0 deletions
diff --git a/pkgs/development/ocaml-modules/lwt/legacy.nix b/pkgs/development/ocaml-modules/lwt/legacy.nix
new file mode 100644
index 000000000000..53ba904f628e
--- /dev/null
+++ b/pkgs/development/ocaml-modules/lwt/legacy.nix
@@ -0,0 +1,57 @@
+{ stdenv, buildOcaml, fetchzip, which, cryptopp, ocaml, findlib, ocamlbuild, camlp4
+, react, ssl, libev, pkgconfig, ncurses, glib
+, ppx_tools, result, cppo
+, ppxSupport ? stdenv.lib.versionAtLeast ocaml.version "4.02"
+, version ? if stdenv.lib.versionAtLeast ocaml.version "4.02" then "2.7.1" else "2.6.0"
+}:
+
+if !stdenv.lib.versionAtLeast ocaml.version "4"
+then throw "lwt is not available for OCaml ${ocaml.version}"
+else
+
+let sha256 = {
+  "3.0.0" = "0wwhnl9hppixcsdisinj1wmffx0nv6hkpm01z9qvkngkrazi3i88";
+  "2.7.1" = "0w7f59havrl2fsnvs84lm7wlqpsrldg80gy5afpnpr21zkw22g8w";
+  "2.6.0" = "0f1h83zh60rspm4fxd96z9h5bkhq1n1q968hgq92sq4a6bfi1c2w";
+}."${version}"; in
+
+let optionals = stdenv.lib.optionals (!stdenv.lib.versionAtLeast version "3"); in
+
+buildOcaml rec {
+  name = "lwt";
+  inherit version;
+
+  src = fetchzip {
+    url = "https://github.com/ocsigen/lwt/archive/${version}.tar.gz";
+    inherit sha256;
+  };
+
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ which cryptopp ocaml findlib ocamlbuild glib ncurses camlp4 cppo ]
+  ++ stdenv.lib.optional ppxSupport ppx_tools;
+
+  propagatedBuildInputs = [ result ]
+  ++ optionals [ react ssl ]
+  ++ [ libev ];
+
+  configureScript = "ocaml setup.ml -configure";
+  prefixKey = "--prefix ";
+  configureFlags =
+  optionals [ "--enable-glib" "--enable-ssl" "--enable-react" ]
+  ++ [ "--enable-camlp4" ]
+  ++ [ (if ppxSupport then "--enable-ppx" else "--disable-ppx") ];
+
+  createFindlibDestdir = true;
+
+  hasSharedObjects = true;
+
+  meta = with stdenv.lib; {
+    homepage = http://ocsigen.org/lwt;
+    description = "Lightweight thread library for Objective Caml";
+    license = licenses.lgpl21;
+    platforms = ocaml.meta.platforms or [];
+    maintainers = with maintainers; [
+      z77z vbgl gal_bolle
+    ];
+  };
+}