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/libui/default.nix

@@ -0,0 +1,53 @@
+{ lib, stdenv, fetchFromGitHub, cmake, pkg-config, gtk3, Cocoa }:
+
+let
+  backend   = if stdenv.isDarwin then "darwin" else "unix";
+in
+
+stdenv.mkDerivation rec {
+  pname = "libui";
+  version   = "4.1a";
+  src  = fetchFromGitHub {
+    owner  = "andlabs";
+    repo   = "libui";
+    rev    = "alpha4.1";
+    sha256 = "0bm6xvqk4drg2kw6d304x6mlfal7gh8mbl5a9f0509smmdzgdkwm";
+  };
+
+  nativeBuildInputs = [ cmake pkg-config ];
+  propagatedBuildInputs = lib.optional stdenv.isLinux gtk3
+    ++ lib.optionals stdenv.isDarwin [ Cocoa ];
+
+  preConfigure = lib.optionalString stdenv.isDarwin ''
+    sed -i 's/set(CMAKE_OSX_DEPLOYMENT_TARGET "10.8")//' ./CMakeLists.txt
+  '';
+
+  installPhase = ''
+    mkdir -p $out/{include,lib}
+    mkdir -p $out/lib/pkgconfig
+  '' + lib.optionalString stdenv.isLinux ''
+    mv ./out/libui.so.0 $out/lib/
+    ln -s $out/lib/libui.so.0 $out/lib/libui.so
+  '' + lib.optionalString stdenv.isDarwin ''
+    mv ./out/libui.A.dylib $out/lib/
+    ln -s $out/lib/lubui.A.dylib $out/lib/libui.dylib
+  '' + ''
+    cp $src/ui.h $out/include
+    cp $src/ui_${backend}.h $out/include
+
+    cp ${./libui.pc} $out/lib/pkgconfig/libui.pc
+    substituteInPlace $out/lib/pkgconfig/libui.pc \
+      --subst-var-by out $out \
+      --subst-var-by version "${version}"
+  '';
+  postInstall = lib.optionalString stdenv.isDarwin ''
+    install_name_tool -id $out/lib/libui.A.dylib $out/lib/libui.A.dylib
+  '';
+
+  meta = with lib; {
+    homepage    = "https://github.com/andlabs/libui";
+    description = "Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports";
+    license     = licenses.mit;
+    platforms   = platforms.unix;
+  };
+}