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/bullet/roboschool-fork.nix

@@ -0,0 +1,58 @@
+{ lib, stdenv, fetchFromGitHub, cmake, libGLU, libGL, freeglut
+, Cocoa,  OpenGL
+}:
+
+stdenv.mkDerivation {
+  pname = "bullet";
+  version = "2019-03-27";
+
+  src = fetchFromGitHub {
+    owner = "olegklimov";
+    repo = "bullet3";
+    # roboschool needs the HEAD of a specific branch of this fork, see
+    # https://github.com/openai/roboschool/issues/126#issuecomment-421643980
+    # https://github.com/openai/roboschool/pull/62
+    # https://github.com/openai/roboschool/issues/124
+    rev = "3687507ddc04a15de2c5db1e349ada3f2b34b3d6";
+    sha256 = "1wd7vj9136dl7lfb8ll0rc2fdl723y3ls9ipp7657yfl2xrqhvkb";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = lib.optionals stdenv.isLinux [ libGLU libGL freeglut ]
+    ++ lib.optionals stdenv.isDarwin [ Cocoa OpenGL ];
+
+  patches = [ ./gwen-narrowing.patch ];
+
+  postPatch = lib.optionalString stdenv.isDarwin ''
+    sed -i 's/FIND_PACKAGE(OpenGL)//' CMakeLists.txt
+    sed -i 's/FIND_LIBRARY(COCOA_LIBRARY Cocoa)//' CMakeLists.txt
+  '';
+
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=ON"
+    "-DBUILD_CPU_DEMOS=OFF"
+    "-DINSTALL_EXTRA_LIBS=ON"
+  ] ++ lib.optionals stdenv.isDarwin [
+    "-DOPENGL_FOUND=true"
+    "-DOPENGL_LIBRARIES=${OpenGL}/Library/Frameworks/OpenGL.framework"
+    "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks/OpenGL.framework"
+    "-DOPENGL_gl_LIBRARY=${OpenGL}/Library/Frameworks/OpenGL.framework"
+    "-DCOCOA_LIBRARY=${Cocoa}/Library/Frameworks/Cocoa.framework"
+    "-DBUILD_BULLET2_DEMOS=OFF"
+    "-DBUILD_UNIT_TESTS=OFF"
+  ];
+
+  meta = with lib; {
+    description = "A professional free 3D Game Multiphysics Library";
+    longDescription = ''
+      Bullet 3D Game Multiphysics Library provides state of the art collision
+      detection, soft body and rigid body dynamics.
+    '';
+    homepage = "http://bulletphysics.org";
+    license = licenses.zlib;
+    platforms = platforms.unix;
+    # /tmp/nix-build-bullet-2019-03-27.drv-0/source/src/Bullet3Common/b3Vector3.h:297:7: error: argument value 10880 is outside the valid range [0, 255] [-Wargument-outside-range]
+    #                 y = b3_splat_ps(y, 0x80);
+    broken = (stdenv.isDarwin && stdenv.isx86_64);
+  };
+}