1 files changed, 28 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/lwt/default.nix b/nixpkgs/pkgs/development/ocaml-modules/lwt/default.nix
new file mode 100644
index 00000000000..759f0deedf1
--- /dev/null
+++ b/nixpkgs/pkgs/development/ocaml-modules/lwt/default.nix
@@ -0,0 +1,28 @@
+{ lib, fetchzip, pkgconfig, ncurses, libev, buildDunePackage, ocaml
+, cppo, ocaml-migrate-parsetree, ocplib-endian, result
+, mmap, seq
+}:
+
+let inherit (lib) optional versionAtLeast; in
+
+buildDunePackage rec {
+  pname = "lwt";
+  version = "5.3.0";
+
+  src = fetchzip {
+    url = "https://github.com/ocsigen/${pname}/archive/${version}.tar.gz";
+    sha256 = "15hgy3220m2b8imipa514n7l65m1h5lc6l1hanqwwvs7ghh2aqp2";
+  };
+
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ cppo ocaml-migrate-parsetree ]
+   ++ optional (!versionAtLeast ocaml.version "4.07") ncurses;
+  propagatedBuildInputs = [ libev mmap ocplib-endian seq result ];
+
+  meta = {
+    homepage = "https://ocsigen.org/lwt/";
+    description = "A cooperative threads library for OCaml";
+    maintainers = [ lib.maintainers.vbgl ];
+    license = lib.licenses.mit;
+  };
+}