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/misc/jekyll/update.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bundix zlib
+
+set -o errexit
+set -o nounset
+
+readonly BASEDIR="$(dirname $(readlink -f $0))"
+
+for directory in "basic" "full"; do
+  pushd "$BASEDIR/$directory"
+  rm -f Gemfile.lock gemset.nix
+  bundix --magic
+  rm -rf .bundle vendor
+  popd
+done