quazip: Use qt instead of qt5 for refering to Qt.

Qt 5 is passed via all-packages.nix, so it doesn't look too odd if you
want to build against qt4 instead. Before you'd have to use something
like:

quazip.override { qt5 = qt4; }

Now, it is:

quazip.override { qt = qt4; }

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
libechonest: Add new package, version 2.3.0.

Required as a dependency of the Tomahawk music player.

Tests are disabled because they require networking support.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
qtkeychain: Add new package, version 0.4.0.

Required as a dependency of the Tomahawk music player.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
lucenepp: Add new package, version 3.0.6.

Required as a dependency of the Tomahawk music player.

The latest upstream release needs to be patched quite a bit in order to
build and to correctly install the header files. Other distributions
seem to largely use the latest Git master version, because all those
build problems have been fixed there already.

In order to ensure we have version 3.0.6, we just cherry-pick the
relevant patches, so as soon as the next upstream version is released we
just need to drop the patches/postPatch attributes.

The postPatch is needed in order to get rid of the subversion
dependency, which the upstream build process tries to use for fetching
gtest. We don't have networking support inside the Nix build process, so
let's pass that dependency directly.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
websocketpp: Add new package, version 0.4.0.

Required as a dependency of the Tomahawk music player.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
libjreen: Add new package, version 1.2.0.

Required as an optional dependency of the Tomahawk music player.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
tomahawk: Add new package, version 0.8.1.

Although I've not tested the Tomahawk build on Mac OS X, it *should*
work on it, so I'm using platforms.all here.

Telepathy and KDE support are disabled by default in order to not get in
the way of users who want to use a more minimalistic window-manager-only
setup. But I'm not sure whether it matters in reality, we'll see once
more people are using Tomahawk.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
nixos: Add rudimentary VM tests for Chromium.

Currently, the test is only for testing the user namespace sandbox and
even that isn't very representative, because we're running the tests as
root.

But apart from that, we should have functionality for opening/closing
windows and the main goal here is to get them as deterministic as
possible, because Chromium usually isn't very nice to chained xdotool
keystrokes.

And of course, the most important "test" we have here: We know at least
whether Chromium works _at_all_.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Merge branch 'tomahawk'.

Adds the Tomahawk music player (https://www.tomahawk-player.org/) in
version 0.8.1 and all its required and optional dependencies.

* tomahawk:
  tomahawk: Add new package, version 0.8.1.
  libjreen: Add new package, version 1.2.0.
  websocketpp: Add new package, version 0.4.0.
  lucenepp: Add new package, version 3.0.6.
  qtkeychain: Add new package, version 0.4.0.
  libechonest: Add new package, version 2.3.0.
  quazip: Use qt instead of qt5 for refering to Qt.