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
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
Updates camlp5 6.11 -> 6.12
hol_light: update to r199

And adds compatibility with camlp5-6.12
Remove hard-coded /etc from strongswan
Merge branch 'mac-purity' of git://github.com/copumpkin/nixpkgs

Let’s compile the Mac OS X SecurityTool ourselves

copumpkin:

This allows us to compile SecurityTool ourselves. There are several more
Apple opensource projects that can be compiled this way that I'll slowly
add.

Remaining sources of impurity:

Reference to absolute path to Xcode. This should be integrated with the
xcode derivation (and the iOS wrapper chain that exists under mobile
development) but it's not obvious how to do that yet.
Absolute reference to xcodebuild.
Adding this should make it possible for #3629 to work reasonably
cleanly.
rustcMaster: Fix test_override_env and enable tests

We also need to disable parallel building due to rust-lang/rust#16305.

Closes #4339
isabelle: Version 2014 building on Linux and Darwin
Update Namecoin to 0.3.76