From e3c1e37823976a712ec86ddc7bb78f9c6420131a Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Fri, 24 Mar 2017 19:09:00 +0000
Subject: [PATCH] ocamlPackages.ppx_ast: init at 0.9.0

Ppx_ast selects a specific version of the OCaml Abstract Syntax
Tree from the migrate-parsetree project that is not necessarily
the same one as the one being used by the compiler.

Homepage: https://github.com/janestreet/ppx_ast
---
 .../ocaml-modules/janestreet/ppx_ast.nix      | 24 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 ++
 2 files changed, 26 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/janestreet/ppx_ast.nix

diff --git a/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix b/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix
new file mode 100644
index 00000000000..33f1766cb4a
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/ppx_ast.nix
@@ -0,0 +1,24 @@
+{ stdenv, fetchurl, ocaml, jbuilder, findlib
+, ocaml-compiler-libs, ocaml-migrate-parsetree
+}:
+
+stdenv.mkDerivation {
+	name = "ocaml${ocaml.version}-ppx_ast-0.9.0";
+	src = fetchurl {
+		url = http://ocaml.janestreet.com/ocaml-core/v0.9/files/ppx_ast-v0.9.0.tar.gz;
+		sha256 = "1hirfmxr8hkf3p39k1pqidabxxhd541d6ddfaqpgxbl51bw9ddmz";
+	};
+
+	buildInputs = [ ocaml jbuilder findlib ];
+	propagatedBuildInputs = [ ocaml-compiler-libs ocaml-migrate-parsetree ];
+
+	inherit (jbuilder) installPhase;
+
+	meta = {
+		description = "OCaml AST used by Jane Street ppx rewriters";
+		homepage = https://github.com/janestreet/ppx_ast;
+		license = stdenv.lib.licenses.asl20;
+		maintainers = [ stdenv.lib.maintainers.vbgl ];
+		inherit (ocaml.meta) platforms;
+	};
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 12ddbfafa10..54460f855db 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -573,6 +573,8 @@ let
 
     ocaml-compiler-libs = callPackage ../development/ocaml-modules/janestreet/ocaml-compiler-libs.nix {};
 
+    ppx_ast = callPackage ../development/ocaml-modules/janestreet/ppx_ast.nix {};
+
     ppx_core =
       if lib.versionOlder "4.03" ocaml.version
       then callPackage ../development/ocaml-modules/janestreet/ppx_core-113_33_01.nix {}