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/yabar/unstable.nix

@@ -0,0 +1,25 @@
+{ fetchpatch, playerctl, libxkbcommon, callPackage, attrs ? {} }:
+
+let
+  pkg = callPackage ./build.nix ({
+    version = "unstable-2018-01-18";
+
+    rev    = "c516e8e78d39dd2b339acadc4c175347171150bb";
+    sha256 = "1p9lx78cayyn7qc2q66id2xfs76jyddnqv2x1ypsvixaxwcvqgdb";
+  } // attrs);
+in pkg.overrideAttrs (o: {
+  buildInputs = o.buildInputs ++ [
+    playerctl libxkbcommon
+  ];
+
+  makeFlags = o.makeFlags ++ [
+    "PLAYERCTL=1"
+  ];
+
+  patches = (o.patches or []) ++ [
+    (fetchpatch {
+      url = "https://github.com/geommer/yabar/commit/008dc1420ff684cf12ce2ef3ac9d642e054e39f5.patch";
+      sha256 = "1q7nd66ai6nr2m6iqxn55gvbr4r5gjc00c8wyjc3riv31qcbqbhv";
+    })
+  ];
+})