firebird service
many suggestions contributed by bjornfor and edolstra
Merge pull request #209 from MarcWeber/submit/firebird

systemd/firebird
Remove the nixos.unstable job from the trunk-combined jobset
Properly wipe .compose-cache.
Fixes #267.
add simple rsnapshot module
implement bjornfors comments
rsnapshot: extraConfiguration -> extraConfig
rsnapshot: do not use /etc/rsnapshot.conf
Merge pull request #270 from aristidb/master

Add simple rsnapshot module