uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/ocaml-modules/irmin/containers.nix

@@ -0,0 +1,27 @@
+{ buildDunePackage
+, irmin, irmin-unix, irmin-git, ppx_irmin, lwt, mtime
+, alcotest, alcotest-lwt, cacert
+}:
+
+buildDunePackage {
+  pname = "irmin-containers";
+
+  inherit (ppx_irmin) src version useDune2;
+
+  nativeBuildInputs = [
+    ppx_irmin
+  ];
+
+  propagatedBuildInputs = [
+    irmin irmin-unix irmin-git ppx_irmin lwt mtime
+  ];
+
+  doCheck = true;
+  checkInputs = [
+    alcotest alcotest-lwt cacert
+  ];
+
+  meta = ppx_irmin.meta // {
+    description = "Mergeable Irmin data structures";
+  };
+}