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/openhmd/default.nix

@@ -0,0 +1,61 @@
+{ lib, stdenv
+, fetchFromGitHub
+, cmake
+, pkg-config
+, hidapi
+, SDL2
+, libGL
+, glew
+, withExamples ? true
+}:
+
+let examplesOnOff = if withExamples then "ON" else "OFF"; in
+
+stdenv.mkDerivation rec {
+  pname = "openhmd";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "OpenHMD";
+    repo = "OpenHMD";
+    rev = version;
+    sha256 = "1hkpdl4zgycag5k8njvqpx01apxmm8m8pvhlsxgxpqiqy9a38ccg";
+  };
+
+  nativeBuildInputs = [ cmake pkg-config ];
+
+  buildInputs = [
+    hidapi
+  ] ++ lib.optionals withExamples [
+    SDL2
+    glew
+    libGL
+  ];
+
+  cmakeFlags = [
+    "-DBUILD_BOTH_STATIC_SHARED_LIBS=ON"
+    "-DOPENHMD_EXAMPLE_SIMPLE=${examplesOnOff}"
+    "-DOPENHMD_EXAMPLE_SDL=${examplesOnOff}"
+    "-DOpenGL_GL_PREFERENCE=GLVND"
+  ];
+
+  postInstall = lib.optionalString withExamples ''
+    mkdir -p $out/bin
+    install -D examples/simple/simple $out/bin/openhmd-example-simple
+    install -D examples/opengl/openglexample $out/bin/openhmd-example-opengl
+  '';
+
+  meta = with lib; {
+    homepage = "http://www.openhmd.net"; # https does not work
+    description = "Library API and drivers immersive technology";
+    longDescription = ''
+      OpenHMD is a very simple FLOSS C library and a set of drivers
+      for interfacing with Virtual Reality (VR) Headsets aka
+      Head-mounted Displays (HMDs), controllers and trackers like
+      Oculus Rift, HTC Vive, Windows Mixed Reality, and etc.
+    '';
+    license = licenses.boost;
+    maintainers = with maintainers; [ oxij ];
+    platforms = platforms.unix;
+  };
+}