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/num/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, lib, fetchFromGitHub, fetchpatch, ocaml, findlib, withStatic ? false }:
+
+stdenv.mkDerivation rec {
+  version = "1.1";
+  pname = "ocaml${ocaml.version}-num";
+  src = fetchFromGitHub {
+    owner = "ocaml";
+    repo = "num";
+    rev = "v${version}";
+    sha256 = "0a4mhxgs5hi81d227aygjx35696314swas0vzy3ig809jb7zq4h0";
+  };
+
+  patches = [ (fetchpatch {
+      url = "https://github.com/ocaml/num/commit/6d4c6d476c061298e6385e8a0864f083194b9307.patch";
+      sha256 = "18zlvb5n327q8y3c52js5dvyy29ssld1l53jqng8m9w1k24ypi0b";
+    })
+  ] ++ lib.optional withStatic ./enable-static.patch;
+
+  nativeBuildInputs = [ ocaml findlib ];
+
+  strictDeps = true;
+
+  createFindlibDestdir = true;
+
+  meta = {
+    description = "Legacy Num library for arbitrary-precision integer and rational arithmetic";
+    license = lib.licenses.lgpl21;
+    inherit (ocaml.meta) platforms;
+    inherit (src.meta) homepage;
+  };
+}

pkgs/development/ocaml-modules/num/enable-static.patch

@@ -0,0 +1,12 @@
+diff -u a/src/Makefile b/src/Makefile
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -45,7 +45,7 @@
+ endif
+ 
+ libnums.$(A): $(COBJS)
+-	$(OCAMLMKLIB) -oc nums $(COBJS)
++	$(OCAMLMKLIB) -custom -oc nums $(COBJS)
+ 
+ nums.cma: $(CMOS)
+	 $(OCAMLMKLIB) -o nums -oc nums -linkall $(CMOS)