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>
