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Date: Sun, 10 Dec 2017 11:51:45 -0500
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From: John Covici <covici@ccs.covici.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] preparing for profile switch -- major problem
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On Sun, 10 Dec 2017 07:36:19 -0500,
Kent Fredric wrote:
>
> [1 <text/plain; US-ASCII (quoted-printable)>]
> On Sun, 10 Dec 2017 02:17:09 -0500
> John Covici <covici@ccs.covici.com> wrote:
>
> > OK, thanks, I think I will try that.
>
> The problem you're facing is that you masked dev-lang/perl, but not any
> virtual/perl-* or perl-core/-* to compensate.
>
> These 3 components work in concert like a single component, as a sort
> of bodge to compensate for the fact portage has no working "provides" feature,
> and to compensate for the dependency-system missmatch between how
> Gentoo works and how CPAN works.
>
> Theres' no easy way of fixing this atm, but the short of it is if you're using
> an ~arch dev-lang/perl, you should be using an ~arch virtual/perl-*,
> and if you're using an "arch" dev-lang/perl, you should be using only
> "arch" versions of virtual/perl-*
>
> Once you do this, portage may still scream at you, because portage is
> very much optimised for upgrading, and it tends to think downgrading is
> an error.
>
> So once you get all your masks/keyword changes in place, you should do:
>
> emerge -C virtual/perl-*
> emerge -C perl-core/*
>
> (or something to that effect)
>
> This looks scary, but generally isn't, because you're not actually removing
> anything with this, just juggling a few balls and making only older
> versions of certain things available ( as they're alls shipped in
> dev-lang/perl )
>
> And then after you do this, portage is more likely to be persuadable
> into doing the right thing.
>
> You can additionally abuse my tool, gentoo-perl-helpers for doing some of this,
> and some of the steps I've described are automated because they're just
> that safe and useful.
>
> https://wiki.gentoo.org/wiki/Perl#app-admin.2Fgentoo-perl-helpers
>
>
> After putting the right masks in place, do:
>
> gentoo-perl gen-upgrade-sets 5.26 5.24
>
> And if you're really lucky, the sets it generates will work the first time :)
>
> ( I actually tested this scenario when developing it, but its still an
> undocumented use on purpose )
OK, so I am doing the usual update of world and portage figured out
about hundreds of perl modules and even thepython setuptools, so I
will do that and then think about doing the -e world, but I may wait
awhile on that -- this one will take at least 48 hours.
--
Your life is like a penny. You're going to lose it. The question is:
How do
you spend it?
John Covici
covici@ccs.covici.com