Elixir's mix shouldn't be added to wrapProgram
logstash service: make log verbosity configurable.
chicken: Implement support for bootstrap-builds

This is necessary in order to apply custom patches, as chicken needs a
bootstrap build to regenerate *.c files. This is also necessary when
building from git.
Infrastructure to build chicken eggs.
Implement patches.nix to override parts of a derivation
rename patches -> overrides
Add chicken to PATH of wrapped chicken binaries.
New package: egg2nix.

Generates nix-expressions from Chicken Scheme Eggs.
nixos-iso: Add zfs / btrfs to supportedFilesystems
eggDerivation: Move postInstall into installPhase.
Pass chickenEggs as a parameter to egg2nix.

Those eggs are specific to egg2nix - it's unwise to make them public.
Wrap chicken so it can find gcc.
Added line SCSI_SAS_ATA y on line 62

This kernel change will make the nixOS live cd detect the hard drive upon boot.
egg2nix: Update to 0.2.

Also regenerate chicken-eggs.nix - the changeset is quite big, but
subsequent changes will be smaller as egg2nix now sorts its output.
Added package for fcitx-configtool.

This allows fctix to be configured through a GUI.
mysql: make cleaner directory layout for 5.5.*
Add python package gsutil plus all its dependencies.
rng-tools: update package
Add byzanz
gst-plugins-good: add minimized version