Re: [gentoo-python] Problem with packages losing python2 compatibility

[Michał Górny]

On Mon, 2018-12-10 at 11:59 -0500, Ian Stakenvicius wrote:
> On 2018-12-10 11:07 a.m., Michał Górny wrote:
> > What can we do to solve it?
> > ===========================
> >
> > a) Do nothing and hope upstreams solve it at some point.  I don't think
> > this is acceptable because Portage's slowdown is going to be
> > significant.
> >
> > b) Start dropping py2 from packages.  Sadly, this is hard because we're
> > talking about huge reverse dependency graph, and I'm pretty sure some of
> > our users need those packages w/ py2 support.
> >
> > c) Slot IPython?  That's probably the least intrusive option, though
> > ugly as hell, and I'm not sure if it's not going to impact dep
> > calculation severely anyway.  We'd have a :5 slot that supports py2
> > only, and :0 slot that supports py3 only.  Dependencies will be tricky,
> > life's going to be hard but maybe things will work.
> >
> > Any other options?
>
> This'll be uglier for maintainers but cleaner for the repo -- what
> about a single IPython "package" that installs :5 for py2 and :0 for
> py3 ? Since python multi-builds anyways it shouldn't be too difficult
> to have it install from separate distfiles.  Versioning would be a
> royal pain, likely some sort of combination of versions into a
> snapshot version number of sorts would need to be done...
>

We can add a virtual.  We don't have to do horrible stuff.

-- 
Best regards,
Michał Górny