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/applications/window-managers/spectrwm/default.nix

@@ -0,0 +1,48 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, xorg }:
+
+stdenv.mkDerivation {
+  pname = "spectrwm";
+  version = "3.4.1";
+
+  src = fetchFromGitHub {
+    owner = "conformal";
+    repo = "spectrwm";
+    rev = "SPECTRWM_3_4_1";
+    sha256 = "0bf0d25yr0craksamczn2mdy6cjp27l88smihlw9bw4p6a2qhi41";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = with xorg; [
+    libXrandr
+    libXcursor
+    libXft
+    libXt
+    xcbutil
+    xcbutilkeysyms
+    xcbutilwm
+  ];
+
+  prePatch = let
+    subdir = if stdenv.isDarwin then "osx" else "linux";
+  in "cd ${subdir}";
+
+  makeFlags = [ "PREFIX=${placeholder "out"}" ];
+
+  meta = with lib; {
+    description = "A tiling window manager";
+    homepage    = "https://github.com/conformal/spectrwm";
+    maintainers = with maintainers; [ christianharke ];
+    license     = licenses.isc;
+    platforms   = platforms.all;
+
+    longDescription = ''
+      spectrwm is a small dynamic tiling window manager for X11. It
+      tries to stay out of the way so that valuable screen real estate
+      can be used for much more important stuff. It has sane defaults
+      and does not require one to learn a language to do any
+      configuration. It was written by hackers for hackers and it
+      strives to be small, compact and fast.
+    '';
+  };
+
+}