packaging mpich2 -- conflicts with lam and file layoutb

[Ed Hill]

On Tue, 2005-11-08 at 15:39 +0000, Paul Howarth wrote:
> Ed Hill wrote:
> > Thanks for the feedback!  And can someone please explain how the
> > alternatives thing works or, even better, point me towards a doc that
> > explains it?
> 
> "man alternatives" is a start, and you might also look at the spec files 
> for sendmail and postfix, which provide alternative MTAs using the 
> alternatives system.

Thanks, Paul!

So, reading the man pages, alternatives boils down to a bunch of
symbolic links.  Well, that stinks (tm).  I want multiple MPI
implementations installed side-by-side and I want to select, for
instance, which "mpirun" is called on a *** per-session basis *** by
either specifying its full path or by using some semi-automated ${PATH}
manipulation magic such as:

  http://modules.sourceforge.net/

as discussed at:

  https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=171993

So, my question for the packaging-gurus becomes:  Is there some way that
we can accomplish that using something like (that is, similar but
perhaps not exactly the same as):

  /usr/lib/${MPI_IMPL_NAME}/{bin,man,lib,include}

that will be acceptable wrt the Fedora packaging guidelines and, if
necessary, the FHS as well?  Is it even possible?  And, if so, how?

Ed

ps - Please pardon my FHS ignorance.  I have skimmed through it but
cannot claim any deep understanding.


-- 
Edward H. Hill III, PhD
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