Bug#817977: firefox: Please add Conflicts & Provides for iceweasel

[Mike Hommey]

On Sun, Mar 13, 2016 at 11:30:10AM +0900, Mike Hommey wrote:
> On Sun, Mar 13, 2016 at 11:25:35AM +0900, Mike Hommey wrote:
> > On Sun, Mar 13, 2016 at 02:13:48AM +0100, Axel Beckert wrote:
> > > Hi,
> > > 
> > > Patrick Winnertz wrote:
> > > > please add Conflicts: Iceweasel and Provides: Iceweasel to firefox,
> > > > as it is otherwise not possible to install the firefox package and
> > > > to remove the iceweasel package without installing firefox-esr, too. 
> > > 
> > > I ran into this, too, when upgrading iceweasel (which pulled in
> > > firefox-esr) and installing firefox in the same aptitude run:
> > > 
> > > Preparing to unpack .../firefox-esr_45.0esr-1_amd64.deb ...
> > > Removing 'diversion of /usr/bin/firefox to /usr/bin/firefox.real by iceweasel'
> > > dpkg-divert: error: rename involves overwriting '/usr/bin/firefox' with
> > >   different file '/usr/bin/firefox.real', not allowed
> > > dpkg: error processing archive /var/cache/apt/archives/firefox-esr_45.0esr-1_amd64.deb (--unpack):
> > >  subprocess new pre-installation script returned error exit status 2
> > > Selecting previously unselected package firefox-esr-l10n-de.
> > 
> > No matter how hard I try, I can't reproduce. I also don't understand how
> > that can happen. But since neither of you are copy/pasting full apt
> > logs, I cannot tell much. The only way I can imagine this happening is
> > if iceweasel is not unpacked before firefox-esr. Interestingly,
> > iceweasel unpacking before firefox-esr is related to bug 817908.
> 
> Now, come to think of it, maybe making firefox-esr conflict with
> iceweasel (<< 45) would force iceweasel to be unpacked first.
> Incidentally, this might be part of working around bug 817908 too.

The issue is actually different, but I don't get why I can't reproduce
it. At least I think I figured how it can happen... will try to find a
work around.

Mike