diff --git a/pkgs/development/ocaml-modules/irmin/unix.nix b/pkgs/development/ocaml-modules/irmin/unix.nix
new file mode 100644
index 00000000000..5793678bfcf
--- /dev/null
+++ b/pkgs/development/ocaml-modules/irmin/unix.nix
@@ -0,0 +1,26 @@
+{ lib, buildDunePackage
+, checkseum, cmdliner, git-unix, yaml
+, irmin, irmin-fs, irmin-git, irmin-graphql, irmin-http, irmin-mem, irmin-pack, irmin-watcher
+, irmin-test
+}:
+
+buildDunePackage rec {
+
+  pname = "irmin-unix";
+
+  inherit (irmin) version src;
+
+  propagatedBuildInputs = [ checkseum cmdliner git-unix yaml
+    irmin irmin-fs irmin-git irmin-graphql irmin-http irmin-mem irmin-pack irmin-watcher
+  ];
+
+  checkInputs = lib.optional doCheck irmin-test;
+
+  doCheck = true;
+
+  meta = irmin.meta // {
+    description = "Unix backends for Irmin";
+  };
+
+}
+
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index a2f81341ec8..399af520405 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -386,6 +386,8 @@ let
 
     irmin-test = callPackage ../development/ocaml-modules/irmin/test.nix { };
 
+    irmin-unix = callPackage ../development/ocaml-modules/irmin/unix.nix { };
+
     irmin-watcher = callPackage ../development/ocaml-modules/irmin-watcher { };
 
     jingoo = callPackage ../development/ocaml-modules/jingoo {