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-rw-r--r--pkgs/development/ocaml-modules/lwt/ppx.nix19
-rw-r--r--pkgs/top-level/ocaml-packages.nix4
2 files changed, 23 insertions, 0 deletions
diff --git a/pkgs/development/ocaml-modules/lwt/ppx.nix b/pkgs/development/ocaml-modules/lwt/ppx.nix
new file mode 100644
index 00000000000..3cf08d06f1e
--- /dev/null
+++ b/pkgs/development/ocaml-modules/lwt/ppx.nix
@@ -0,0 +1,19 @@
+{ stdenv, jbuilder, ocaml, findlib, lwt, ppx_tools_versioned }:
+
+stdenv.mkDerivation {
+  name = "ocaml${ocaml.version}-lwt_ppx-${lwt.version}";
+
+  inherit (lwt) src;
+
+  buildInputs = [ jbuilder ocaml findlib ppx_tools_versioned ];
+
+  propagatedBuildInputs = [ lwt ];
+
+  buildPhase = "jbuilder build -p lwt_ppx";
+  installPhase = "${jbuilder.installPhase} lwt_ppx.install";
+
+  meta = {
+    description = "Ppx syntax extension for Lwt";
+    inherit (lwt.meta) license platforms homepage maintainers;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 5c2ec39ade7..7ac8508d889 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -374,6 +374,10 @@ let
 
     ocaml_lwt = if lib.versionOlder "4.02" ocaml.version then lwt3 else lwt2;
 
+    lwt_ppx = callPackage ../development/ocaml-modules/lwt/ppx.nix {
+      lwt = lwt3;
+    };
+
     lwt_react = callPackage ../development/ocaml-modules/lwt_react {
       lwt = lwt3;
     };