nixos/xfce: don't set a bloated GST_PLUGIN_PATH
nixos/environment: do not set GST_PLUGIN_SYSTEM_PATH
xfce4-mixer: use wrapper to set GST_PLUGIN_SYSTEM_PATH
ocaml-javalib, ocaml-sawja: removes wrong path to bash in
configure scripts
mpi4py: New package, version 1.3.1
h5py: New package, version 2.3.1
mpi4py: Adhere to package description convention
h5py: Adhere to package description convention
ocaml-javalib, ocaml-sawja: uses patchShebangs rather than ad-hoc patches
require Nix 1.7 for nixpkgs, since we're using antiquotation inside quoted attribute sets
mpi4py: Change description
python-path: new package

path is a module wrapper for os.path.

It's a dependency of moretools (which is a dependency of
robotframework-tools, which is what I want to package).
python-moretools: new package

It provides "Many more basic tools for python 2/3 extending itertools,
functools, operator and collections".

It's a dependency of robotframework-tools, which I want to package.
python-robotframework-tools: new package

This package provides "Python Tools for Robot Framework and Test
Libraries".

In particular, I'm interested in the 'robotshell' extension for IPython.
h5py: Change description
zotero: update to 4.0.22

Drop firefox-30.0, which we were only keeping around for
xulrunner-30.0. New Zotero version is compatible up to firefox-32.0.
Merge pull request #3938 from aherrmann/pr_mpi

Python wrappers for mpi and hdf5 (with mpi support for hdf5)
Merge pull request #3653 from iyzsong/nixos/xfce4-mixer

nixos: don't set variables for gstreamer-0.10 (fix #3652)
Merge pull request #3920 from vbgl/javalib-fix

ocaml-javalib, ocaml-sawja: removes wrong path to bash in configure scripts
Add keylogs, a GNU/Linux keylogger that works