vagrant: add expression
Unpacking jce requires zip

Signed-off-by: Shea Levy <shea@shealevy.com>
nixos/libvirtd-service: fix fail-to-start when no machines are configured

Don't fail to start the libvirtd service just because there are no files
that match the /etc/libvirt/qemu/*.xml pattern.
libopus: update 1.0.3 -> 1.1, enable tests
ntopng: new package

ntopng is a high-speed web-based traffic analysis and flow collection
tool. ntopng => ntop next generation.

http://www.ntop.org/products/ntop/
nixos: add ntopng service

ntopng is a high-speed web-based traffic analysis and flow collection
tool. Enable it by adding this to configuration.nix:

  services.ntopng.enable = true;

Open a browser at http://localhost:3000 and login with the default
username/password: admin/admin.
rtorrent: update to version 0.9.3

This version is dubbed "unstable" and apparently it lacks the man page that
used to come with earlier releases. :-(

We need the latest version, though, because of the recent update to libtorrent.
dropbear: update from 2013.60 to 2013.62
add meta.repositories.git to several packages
haskellPackages.extensibleEffects: New expression
haskellPackages.IntervalMap: New expression
haskellPackages.exPool: New expression
haskellPackages.haskelldb: New expression
Merge pull request #1347 from ocharles/extensible-effects

haskellPackages.extensibleEffects: New expression
Merge pull request #1350 from ocharles/haskelldb

haskellPackages.haskelldb: New expression
Merge pull request #1349 from ocharles/ex-pool

haskellPackages.exPool: New expression
Merge pull request #1348 from ocharles/intervalmap

haskellPackages.IntervalMap: New expression
gmime: update from 2.6.15 to 2.6.19
calibre: upgrade 1.13.0 -> 1.14.0

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
cabal: add support for the enableStaticLibrary flag to enable/disable building of static libraries

Disabling static libraries is supported only in GHC 7.7 or later.