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/imgui/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, lib, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "imgui";
+  version = "1.87";
+
+  src = fetchFromGitHub {
+    owner = "ocornut";
+    repo = "imgui";
+    rev = "v${version}";
+    sha256 = "sha256-H5rqXZFw+2PfVMsYvAK+K+pxxI8HnUC0GlPhooWgEYM=";
+  };
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/include/imgui
+
+    cp *.h $out/include/imgui
+    cp *.cpp $out/include/imgui
+    cp -a backends $out/include/imgui/
+    cp -a misc $out/include/imgui/
+  '';
+
+  meta = with lib; {
+    description = "Bloat-free Graphical User interface for C++ with minimal dependencies";
+    homepage = "https://github.com/ocornut/imgui";
+    license = licenses.mit;
+    maintainers = with maintainers; [ wolfangaukang ];
+    platforms = platforms.all;
+  };
+}