ocamlPackages.ocaml-migrate-parsetree: init at 0.5

This library converts parsetrees, outcometree and ast mappers
between different OCaml versions. High-level functions help making
PPX rewriters independent of a compiler version.

Homepage: https://github.com/let-def/ocaml-migrate-parsetree

pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, jbuilder, result }:
+
+stdenv.mkDerivation rec {
+   name = "ocaml${ocaml.version}-ocaml-migrate-parsetree-${version}";
+   version = "0.5";
+
+   src = fetchFromGitHub {
+     owner = "let-def";
+     repo = "ocaml-migrate-parsetree";
+     rev = "v${version}";
+     sha256 = "023lnd3kxa3d4zgsvv0z2lyzhg05zcgagy18vaalimbza57wq83h";
+   };
+
+   buildInputs = [ ocaml findlib ocamlbuild jbuilder ];
+   propagatedBuildInputs = [ result ];
+
+   installPhase = ''
+     for p in *.install
+     do
+       ${jbuilder.installPhase} $p
+     done
+   '';
+
+   meta = {
+     description = "Convert OCaml parsetrees between different major versions";
+     license = stdenv.lib.licenses.lgpl21;
+     maintainers = [ stdenv.lib.maintainers.vbgl ];
+     inherit (src.meta) homepage;
+     inherit (ocaml.meta) platforms;
+   };
+}

pkgs/top-level/ocaml-packages.nix

@@ -336,6 +336,8 @@ let
 
     ocaml_lwt = callPackage ../development/ocaml-modules/lwt { };
 
+    ocaml-migrate-parsetree = callPackage ../development/ocaml-modules/ocaml-migrate-parsetree { };
+
     ocamlmod = callPackage ../development/tools/ocaml/ocamlmod { };
 
     ocaml_mysql = callPackage ../development/ocaml-modules/mysql { };