From 4ef5c64226b2fbc099e2ccd8ff1a079fe3d31c9d Mon Sep 17 00:00:00 2001
From: sternenseemann <git@lukasepple.de>
Date: Mon, 13 Apr 2020 17:38:32 +0200
Subject: [PATCH] ocamlPackages.ppx_irmin: init at 2.1.0

---
 pkgs/development/ocaml-modules/irmin/ppx.nix | 14 ++++++++++++++
 pkgs/top-level/ocaml-packages.nix            |  4 ++++
 2 files changed, 18 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/irmin/ppx.nix

diff --git a/pkgs/development/ocaml-modules/irmin/ppx.nix b/pkgs/development/ocaml-modules/irmin/ppx.nix
new file mode 100644
index 000000000000..c28532b49a9e
--- /dev/null
+++ b/pkgs/development/ocaml-modules/irmin/ppx.nix
@@ -0,0 +1,14 @@
+{ lib, buildDunePackage, ppxlib, ocaml-syntax-shims, irmin }:
+
+buildDunePackage {
+  pname = "ppx_irmin";
+
+  inherit (irmin) version src minimumOCamlVersion;
+
+  buildInputs = [ ocaml-syntax-shims ];
+  propagatedBuildInputs = [ ppxlib ];
+
+  meta = irmin.meta // {
+    description = "PPX deriver for Irmin generics";
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index b2012e6686bd..365c1884f092 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -806,6 +806,10 @@ let
 
     ppx_import = callPackage ../development/ocaml-modules/ppx_import {};
 
+    ppx_irmin = callPackage ../development/ocaml-modules/irmin/ppx.nix {
+      ppxlib = ppxlib.override { version = "0.12.0"; };
+    };
+
     ppx_sqlexpr = callPackage ../development/ocaml-modules/sqlexpr/ppx.nix {};
 
     ppx_tools =