[Pkg-mpd-maintainers] Bug#738313: Bug#738313: Acknowledgement (START_MPD=false is lost on upgrade to systemd)

[Florian Schlichting]

Hi Joey,

thanks for your followup - I was going to say I agree but was unsure how
to make systemd (and possibly other init systems) work with
/etc/default/mpd.

On Sun, Feb 09, 2014 at 02:32:13PM -0400, Joey Hess wrote:
> I ran this by Tollef and our suggestion is that mpd transition away from
> using START_MPD in the defaults file on upgrade. The upgrade can check
> if START_MPD=false and if so, simply run update-rc.d disable mpd. That
> will handle disabling it in both the systemd and sysvinit cases.

Do you know of a good way to prevent dpkg asking about a modified
conffile after the preinst has already handled the START_MPD=false case?
Policy Appendix E.1 last paragraph says maintainer scripts should not
modify dpkg-handled conffiles, but that's not Policy proper and perhaps
in cases such as this a plain call to sed may be fine?

> It would probably also make sense for mpd.service to use
> EnvironmentFile=/etc/default/mpd in order for the MPDCONF setting
> to be handled.

That should be easy to do, even though in the long term, we'll
hopefully have just one init system and no need for separate
/etc/default files...

Florian