Bug#551752: mpich2-doc: conflict with lam4-dev

Lucas Nussbaum lucas at lucas-nussbaum.net
Tue Oct 20 18:01:33 UTC 2009

retitle 551752 mpich2: suggest mpich2-doc instead of recommending it

On 20/10/09 at 18:50 +0200, Christian Engwer wrote:
> On Tue, Oct 20, 2009 at 06:30:25PM +0200, Lucas Nussbaum wrote:
> > On 20/10/09 at 14:29 +0200, christi wrote:
> > > Package: mpich2-doc
> > > Version: 1.2-2
> > > Severity: normal
> > > 
> > > 
> > > mpich2-doc conflicht with lam4-dev. It is possible to install lam and
> > > mich at the same time. Only the mpich2-doc package can't be installed
> > > together with lam4-dev. Why? I can't a see any good reason.
> > 
> > lam4-dev also ships the manpages for LAM, so there are file conflicts
> > between mpich2-doc and lam4-dev, unfortunately. The solution would be to
> > move all the docs from lam4-dev to (say) lam4-doc.
> > 
> > But the LAM package is basically unmaintained, both in Debian and
> > upstream. Are you still using it? Have you considered moving to openmpi
> > or (now) mpich2?
> OpenMPI has a serious bug that prevents me from using it atm (it's
> fixed upstream).

Can you give a pointer to a bug report or something? If the bug is
serious not just for you, it might be possible to backport the fix to

> Actually I don't care which MPI-documentation I have installed. As
> this problem persists I install lam4-doc. But the recommendation of
> mpich2-doc results in the removal of lam4-dev as the prefered solution
> of apt. This behaviour is imho strange for the average user.

Yes, since it's only a "recommend", you could probably remove mpich2-doc
and install lam4-dev back. I've changed the bug title accordingly, and
I'll push the change -- I'll wait a few days first to see if something
else shows up.

> PS: Wouldn't a NMU of lam be a better solution to the manpage problem
>     than this conflict?

It has already been NMUed 5 times... I'd prefer to invest time to make
OpenMPI and MPICH2 rock in Debian, so we can phase out LAM/MPI and
mpich1, rather than work on LAM and mpich...
| Lucas Nussbaum
| lucas at lucas-nussbaum.net   http://www.lucas-nussbaum.net/ |
| jabber: lucas at nussbaum.fr             GPG: 1024D/023B3F4F |

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