From c9d8ae084d9340f9f7dddd3267e1f7ad72f70502 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sun, 12 Mar 2017 07:29:54 +0000
Subject: [PATCH] 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
---
 .../ocaml-migrate-parsetree/default.nix       | 31 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 ++
 2 files changed, 33 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix

diff --git a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
new file mode 100644
index 000000000000..3694dd2d6abc
--- /dev/null
+++ b/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;
+   };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 1cc5de01e101..f3f535bb0857 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/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 { };