From fac7453117bfbe56c0b3ea96a558505844caa27a Mon Sep 17 00:00:00 2001
From: Vasiliy Yorkin <vasiliy.yorkin@gmail.com>
Date: Fri, 20 Sep 2019 08:53:30 +0300
Subject: [PATCH] ocamlPackages.ocaml-protoc: init at 1.2.0 (#68962)

---
 .../ocaml-modules/ocaml-protoc/default.nix    | 38 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 +
 2 files changed, 40 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/ocaml-protoc/default.nix

diff --git a/pkgs/development/ocaml-modules/ocaml-protoc/default.nix b/pkgs/development/ocaml-modules/ocaml-protoc/default.nix
new file mode 100644
index 000000000000..1ef7b6c2d40b
--- /dev/null
+++ b/pkgs/development/ocaml-modules/ocaml-protoc/default.nix
@@ -0,0 +1,38 @@
+{ stdenv, ocaml, fetchFromGitHub, ocamlbuild, findlib, ppx_deriving_protobuf }:
+
+stdenv.mkDerivation rec {
+  name = "ocaml${ocaml.version}-ocaml-protoc-${version}";
+  version = "1.2.0";
+
+  minimumOCamlVersion = "4.02";
+
+  src = fetchFromGitHub {
+    owner = "mransan";
+    repo = "ocaml-protoc";
+    rev = "60d2d4dd55f73830e1bed603cc44d3420430632c";
+    sha256 = "1d1p8ch723z2qa9azmmnhbcpwxbpzk3imh1cgkjjq4p5jwzj8amj";
+  };
+
+  installPhase = ''
+    mkdir -p tmp/bin
+    export PREFIX=`pwd`/tmp
+    make all.install.build
+    make check_install
+    make lib.install
+    make bin.install
+  '';
+
+  buildInputs = [ ocaml findlib ocamlbuild ];
+  propagatedBuildInputs = [ ppx_deriving_protobuf ];
+
+  createFindlibDestdir = true;
+
+  doCheck = true;
+
+  meta = with stdenv.lib; {
+    homepage = "https://github.com/mransan/ocaml-protoc";
+    description = "A Protobuf Compiler for OCaml";
+    license = licenses.mit;
+    maintainers = [ maintainers.vyorkin ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 728f6f7712d0..087adee735a8 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -664,6 +664,8 @@ let
       then sexplib_108_08_00
       else null;
 
+    ocaml-protoc = callPackage ../development/ocaml-modules/ocaml-protoc { };
+
     ocaml_extlib = callPackage ../development/ocaml-modules/extlib { };
 
     ocb-stubblr = callPackage ../development/ocaml-modules/ocb-stubblr { };