From 4338ddd0f95fef1dffb1342651d49a4a0b60a8dc Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sat, 1 Jul 2017 11:50:24 +0000
Subject: [PATCH] ocamlPackages.mstruct: init at 1.3.3

Mstruct is a thin mutable layer on top of cstruct

Homepage: https://github.com/mirage/ocaml-mstruct
---
 .../ocaml-modules/mstruct/default.nix         | 33 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 ++
 2 files changed, 35 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/mstruct/default.nix

diff --git a/pkgs/development/ocaml-modules/mstruct/default.nix b/pkgs/development/ocaml-modules/mstruct/default.nix
new file mode 100644
index 000000000000..958cbdc554e8
--- /dev/null
+++ b/pkgs/development/ocaml-modules/mstruct/default.nix
@@ -0,0 +1,33 @@
+{ stdenv, fetchFromGitHub, ocaml, findlib, jbuilder, opam
+, cstruct
+}:
+
+if !stdenv.lib.versionAtLeast ocaml.version "4.02"
+then throw "mstruct is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+	version = "1.3.3";
+	name = "ocaml${ocaml.version}-mstruct-${version}";
+
+	src = fetchFromGitHub {
+		owner = "mirage";
+		repo = "ocaml-mstruct";
+		rev = "v${version}";
+		sha256 = "1rxjzkg6156vl6yazbk1h0ndqj80wym5aliaapijf60apqqmsp4s";
+	};
+
+	buildInputs = [ ocaml findlib jbuilder opam ];
+
+	propagatedBuildInputs = [ cstruct ];
+
+	inherit (jbuilder) installPhase;
+
+	meta = {
+		description = "A thin mutable layer on top of cstruct";
+		license = stdenv.lib.licenses.isc;
+		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 3245cca84464..0194ca7c28f4 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -316,6 +316,8 @@ let
 
     mparser =  callPackage ../development/ocaml-modules/mparser { };
 
+    mstruct =  callPackage ../development/ocaml-modules/mstruct { };
+
     mtime =  callPackage ../development/ocaml-modules/mtime { };
 
     nocrypto =  callPackage ../development/ocaml-modules/nocrypto {