Am 05.11.2014 um 13:02 schrieb Norbert Preining: > On Wed, 05 Nov 2014, Michael Biebl wrote: >> A "systemctl enable systemd.service" will hook up acpid.service in > > acpid.service I guess. Yes, but how is that to be incorporated into > the dpkg scripts? > > Does systemd provide any mechanism for that? When and how should > the script be run? On every postinst?
The proposed mechanism to enable systemd unit in mintainer script is the
use of dh_systemd. It is possible to enable both, .service *and* socket
unit. Atm, acpid explicitly does *not* enable the .service unit but only
the .socket unit:
override_dh_systemd_enable:
dh_systemd_enable --no-enable debian/acpid.service
dh_systemd_enable debian/acpid.socket
> And, in the end *why* was it disabled at all?
That's a decision that's up to the maintainer.
Under systemd, there are multiple triggers, how a service can be started
a/ during boot by being pulled in via one of the standard targets like
multi-user.target
b/ via socket activation, by a .socket unit
c/ via hardware events (triggered via udev rules, by tagging a device
and setting ENV{SYSTEMD_WANTS}+="foo.service")
d/ via D-Bus service activation, by a dbus system service file.
e/ timer events, by a .timer unit
The maintainer can decide, which one of those is the most suitable for a
given service. It can also be a combination of multiple triggers.
--
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?
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