Add the Geant4 Monte Carlo radiation transport toolkit and its Python bindings.
update bud to 0.32.0 (WIP)
vtk: Update from 5.10.0 to 5.10.1
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.
postgresql: use configured port when invoking psql
elixir: make curl available to mix
Let’s compile the Mac OS X SecurityTool ourselves
dhcpcd: update from 6.4.3 to 6.4.7
Add haskell package wai-util to nixpkgs
isabelle: Correct the 2014 sha value for Linux
isabelle: Remove Linux patches (is this correct?)
isabelle: Another Linux hash change?
Updates camlp5 6.11 -> 6.12
hol_light: update to r199

And adds compatibility with camlp5-6.12
Sound of Sorting: New Package

Sound of Sorting is an array-sorting visual+sound demo program.
It shows an array as a list of horizontal bars, and realizes a
step-by-step sorting of it. Moreover, it colorizes and emits a
"8-bit-game-like" sound throughout its execution.

Closes #4341