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Quoting Jonas Smedegaard (2018-12-20 17:03:46)
> Quoting Bernard Massot (2018-12-20 15:02:12)
> > On Debian unstable, Radicale was just upgraded from 1.x to 2.x. Only 
> > after upgrading did I realize that my calendars were not available 
> > any more.
> > 
> > As stated on https://radicale.org/1to2/, upgrade to 2.x forces you 
> > to use Python 3, and thus to upgrade mod_wsgi as well. I was using 
> > Python 2 version of mod_wsgi only because it was the default version 
> > and it wasn't causing any problem (Radicale was my only WSGI 
> > application). Moreover, Radicale 2.x can't even use 1.x data files. 
> > You must export your files *before* upgrading.
> > 
> > The Debian package silently ignores all these issues. I think there 
> > should be warning messages and a ad hoc prerm kind of script.
> 
> A NEWS entry was intended to be in place, but evidently was missed.
> 
> Raising severity to not enter testing without that in place.  Thanks!

I worry that a NEWS entry is (certainly needed but) not enough, since 
the result of missing that note may render user data practically 
inaccessible.

My plan is therefore to add a mechanism like the one in mailman package 
which checks in preinst script and warns if stale queue files exist, 
with the option on aborting the install or continuing regardless.

Time is running out, however, and I could dearly use some help isolating 
and adapting that mechanism (preferrably with limited changes to 
user-facing texts to limit the burden on translators).


 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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