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/servers/icingaweb2/theme-april/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "icingaweb2-theme-april";
+  version = "1.0.4";
+
+  src = fetchFromGitHub {
+    owner = "Mikesch-mp";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0i1js2k47llzgmc77q9frvcmr02mqlhg0qhswx1486fvm6myxg0g";
+  };
+
+  installPhase = ''
+    mkdir -p "$out"
+    cp -r * "$out"
+  '';
+
+  meta = with lib; {
+    description = "Icingaweb2 theme for april fools";
+    homepage = "https://github.com/Mikesch-mp/icingaweb2-theme-april";
+    license = licenses.publicDomain;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ das_j ];
+  };
+}