[opam-devel] [ocaml-platform] opam 1.1.1 to be released shortly

Roberto Di Cosmo roberto at dicosmo.org
Fri Jan 10 07:34:23 GMT 2014

On Thu, Jan 09, 2014 at 11:36:49PM +0000, Anil Madhavapeddy wrote:
> > Please discuss any requests or blockers for 1.1.1 !  The biggest current
> > issue is probably the upgrade problems with the built-in heuristic, but
> > there isn't much we can do before the release, and the real solution is
> > to have aspcud packaged and working on OSX.
> Thanks Louis!  The solver issue is my last remaining big concern as well
> before getting 1.1.1 out of the door.  It would be very useful to
> characterise the reason for the failure to see if a quick workaround is
> possible, since so many users are hitting it.  If it's just due to the
> growing number of packages, perhaps we can add some more constraints to
> the package descriptions help the solver find a solution more easily?

Thanks Louis for all this work!

As for the solver, unfortunately it is not a simple piece of code that can be
"fixed" with "workarounds", that's why we have been strongly advocating to use a
modular architecture for package managers, with interchangeable solvers clearly
separated from the rest, see for example

The only sensible thing to do is to actually package aspcud (and possibly
also packup and mccs) for Mac OSX and Windows, which is a reasonably simple
engineering task; I have contacted the developer team of aspcud to encourage
them to do this, and I do have hope to see this done in the year, but I have
no guarantee.

Considering the time frame, and the fact that this kind of issues is
going to come up more and more over time, I do understand that we need
a quicker solution, and the best thing is to ask for help with this 
among our friends OCamlrs...

I'll write a detailed mail on the list to this end this afternoon (now,
as alway, meeting... meeting... meeting :-( )

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