diff --git a/pkgs/development/ocaml-modules/irmin/chunk.nix b/pkgs/development/ocaml-modules/irmin/chunk.nix
new file mode 100644
index 000000000000..7a2ad0ec7dfd
--- /dev/null
+++ b/pkgs/development/ocaml-modules/irmin/chunk.nix
@@ -0,0 +1,18 @@
+{ lib, buildDunePackage, irmin, irmin-mem, irmin-test }:
+
+buildDunePackage rec {
+
+  pname = "irmin-chunk";
+  inherit (irmin) version src useDune2;
+
+  propagatedBuildInputs = [ irmin ];
+
+  doCheck = true;
+  checkInputs = [ irmin-mem irmin-test ];
+
+  meta = irmin.meta // {
+    description = "Irmin backend which allow to store values into chunks";
+  };
+
+}
+
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 9f4603099f8e..2a62a3378174 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -429,6 +429,8 @@ let
 
     irmin = callPackage ../development/ocaml-modules/irmin { };
 
+    irmin-chunk = callPackage ../development/ocaml-modules/irmin/chunk.nix { };
+
     irmin-fs = callPackage ../development/ocaml-modules/irmin/fs.nix { };
 
     irmin-git = callPackage ../development/ocaml-modules/irmin/git.nix { };