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/libraries/leatherman/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, boost, cmake, curl, ruby }:
+
+stdenv.mkDerivation rec {
+  pname = "leatherman";
+  version = "1.12.7";
+
+  src = fetchFromGitHub {
+    sha256 = "sha256-a79/seKO6Efn6g4RWdqsP83pL5AIBAp1InjnMdOs3Qk=";
+    rev = version;
+    repo = "leatherman";
+    owner = "puppetlabs";
+  };
+
+  cmakeFlags = [ "-DLEATHERMAN_ENABLE_TESTING=OFF" ];
+
+  NIX_CFLAGS_COMPILE = "-Wno-error";
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ boost curl ruby ];
+
+  meta = with lib; {
+    homepage = "https://github.com/puppetlabs/leatherman/";
+    description = "A collection of C++ and CMake utility libraries";
+    license = licenses.asl20;
+    maintainers = [ maintainers.womfoo ];
+    platforms = platforms.unix;
+  };
+
+}