Add the Geant4 Monte Carlo radiation transport toolkit and its Python bindings.
update bud to 0.32.0 (WIP)
update google music-manager
rJava: adding missing dependencies and JAVA-env-variables
update links
Allow ansible to install on darwin platforms

I am using this package on my Yosemite install of OS X and it works great. It also pretty closely follows the Homebrew recipe that most OS X users use, so I think we can open it up to other OS X users.
Update to latest ansible version
Removed all versions of geant4 except for the latest one.
dhcpcd: update from 6.4.3 to 6.4.7
Add haskell package wai-util to nixpkgs
Updates camlp5 6.11 -> 6.12
hol_light: update to r199

And adds compatibility with camlp5-6.12
fetchurl: resume download of curl exits with status code 18
nixos: Add option services.cron.cronFiles

This allows you to configure extra files that should be appended to your
crontab. Implemented by writing to /etc/crontab when the cron service starts.
Would be nicer to use a cron that supports /etc/cron.d but that would require
us to patch vixie-cron.
coq-containers: package is broken
r-XML: adding system-dependency libxml2
tibia: update to 10.57
webkitgtk: bump to version 2.4.6
logstalgia: update from 1.0.3 to 1.0.5 and adopt it
XBMC AdvancedLauncher RetroArch launchers.

These are wrappers for retroarch wrappers, they are needed since launching a
process from XBMC(as a display manager and probably otherwise), using
AdvancedLauncher, results in it and it's parent recieving the same gamepad
input.

These wrappers will produce no sound on XBMC and AdvancedLauncher setups not
using a sound daemon, since XBMC gets paused while still holding onto the sound
device.