Re: [gentoo-dev] [News item review] Python preference to follow PYTHON_TARGETS

[Rich Freeman <rich0@gentoo.org>]

On Sun, Jan 24, 2021 at 2:09 PM Michał Górny <mgorny@gentoo.org> wrote:
>
> On Sun, 2021-01-24 at 13:53 -0500, Rich Freeman wrote:
> > On Sun, Jan 24, 2021 at 7:21 AM Michał Górny <mgorny@gentoo.org> wrote:
> > >
> > > For this reason, we have decided to change the default python-exec
> > > configuration to match PYTHON_TARGETS by default, in the eclass
> > > preference order, that is from the newest CPython version to oldest,
> > > with alternative Python implementations coming afterwards.  This change
> > > will be propagated via the configuration protection mechanism whenever
> > > dev-lang/python-exec-conf is installed or rebuilt due to PYTHON_TARGETS
> > > changes.  This will permit the users to interactively confirm
> > > the updates.
> > >
> > > If the new default is not correct for you, please use your preferred
> > > configuration update tool to discard or edit the new configuration file.
> >
> > Could we just spell out what the actual setting is?  That way if a
> > user accepts or rejects the change accidentally it is trivial to fix,
> > vs making them hunt through the installed files to do a diff...
> >
> > Nothing wrong with the instructions - I'd just add one line about what
> > setting controls this.
> >
>
> The exact paths are provided in the second paragraph.  Am I missing
> something?
>

No - the way this works makes sense now.  For some reason I missed it
on the first two reads, which makes me suspect others will as well.
It wasn't the location of the config file I missed, but the fact that
the eclass will just do what eselect python used to do, and thus
trigger config protection (which is at the end of paragraph 4).

For some reason when I read the section about discarding the changes I
was thinking that there was some config toggle to change this behavior
vs the old way things worked.  Instead the new behavior is
unconditional, but the updates it makes to the python-exec config can
be rejected.

-- 
Rich