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/vulkan-loader/default.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv, fetchFromGitHub, cmake, pkg-config, libX11, libxcb
+, libXrandr, wayland, moltenvk, vulkan-headers, addOpenGLRunpath }:
+
+stdenv.mkDerivation rec {
+  pname = "vulkan-loader";
+  version = "1.3.211.0";
+
+  src = (assert version == vulkan-headers.version;
+    fetchFromGitHub {
+      owner = "KhronosGroup";
+      repo = "Vulkan-Loader";
+      rev = "sdk-${version}";
+      sha256 = "sha256-NQu98wA7UK231rpoKDs1yQ6pEyB4wZg7MjFC3JwS2BY=";
+    });
+
+  patches = [ ./fix-pkgconfig.patch ];
+
+  nativeBuildInputs = [ cmake pkg-config ];
+  buildInputs = [ vulkan-headers ]
+    ++ lib.optionals (!stdenv.isDarwin) [ libX11 libxcb libXrandr wayland ];
+
+  cmakeFlags = [ "-DCMAKE_INSTALL_INCLUDEDIR=${vulkan-headers}/include" ]
+    ++ lib.optional stdenv.isDarwin "-DSYSCONFDIR=${moltenvk}/share"
+    ++ lib.optional stdenv.isLinux "-DSYSCONFDIR=${addOpenGLRunpath.driverLink}/share"
+    ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "-DUSE_GAS=OFF";
+
+  outputs = [ "out" "dev" ];
+
+  doInstallCheck = true;
+
+  installCheckPhase = ''
+    grep -q "${vulkan-headers}/include" $dev/lib/pkgconfig/vulkan.pc || {
+      echo vulkan-headers include directory not found in pkg-config file
+      exit 1
+    }
+  '';
+
+  meta = with lib; {
+    description = "LunarG Vulkan loader";
+    homepage    = "https://www.lunarg.com";
+    platforms   = platforms.unix;
+    license     = licenses.asl20;
+    maintainers = [ maintainers.ralith ];
+  };
+}