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/mirage/default.nix

@@ -0,0 +1,40 @@
+{ lib, buildDunePackage, ocaml, alcotest
+, functoria, mirage-runtime, bos
+, ipaddr, astring, logs, stdlib-shims
+}:
+
+buildDunePackage rec {
+  pname = "mirage";
+  inherit (mirage-runtime) version src;
+
+  minimumOCamlVersion = "4.08";
+
+  useDune2 = true;
+
+  outputs = [ "out" "dev" ];
+
+  propagatedBuildInputs = [
+    ipaddr
+    functoria
+    mirage-runtime
+    bos
+    astring
+    logs
+    stdlib-shims
+  ];
+
+  doCheck = true;
+  checkInputs = [
+    alcotest
+  ];
+
+  installPhase = ''
+    runHook preInstall
+    dune install --prefix=$out --libdir=$dev/lib/ocaml/${ocaml.version}/site-lib/ ${pname}
+    runHook postInstall
+  '';
+
+  meta = mirage-runtime.meta // {
+    description = "The MirageOS library operating system";
+  };
+}