On 12 June 2020 16:38:28 CEST, Michael <[email protected]> wrote:
>On Friday, 12 June 2020 15:00:25 BST Jack wrote:
>> On 6/12/20 9:49 AM, Rich Freeman wrote:
>> > On Fri, Jun 12, 2020 at 4:00 AM n952162 <[email protected]> wrote:
>> >> On 2020-06-12 08:40, n952162 wrote:
>> >>>> BTW, is it becoming clear why it is best to update Gentoo at
>least
>> >>>> ever few months?  :)
>> >>> 
>> >>> Well, yes, but it's really pretty onerous.  If you have gentoo in
>> >>> embedded systems, you've got to spend considerable administrative
>effort
>> >>> in each one just maintaining the status quo.
>> >>> 
>> >>> I mean, there's no competition to gentoo, of course.  But a
>design goal
>> >>> could be to have a one-step sync, of some sort.
>> >> 
>> >> Maybe one way to work in that direction would be to have regular -
>say,
>> >> yearly - "releases", kind of like other distributions do, but on
>an
>> >> ebuild basis, re-establishing a common base point.
>> > 
>> > Well, you already can just use a snapshot of the repository from
>any
>> > date in time, though things like patches might not be mirrored any
>> > longer so that isn't a perfect solution.
>> > 
>> > Ultimately if there was enough interest in something like this the
>> > solution would probably be another distro that just repackages
>Gentoo
>> > in a release-based format.  Release-based distros have their pros
>and
>> > cons, but they're definitely a better fit for some problems.
>> > 
>> > One of the issues with Gentoo is that it is fairly niche and so you
>> > don't have the manpower to support 47 forks.  With Debian you have
>a
>> > bazillion derivatives - half of them are just bundling a different
>set
>> > of default packages.  Ubuntu has a Desktop and Server version of
>the
>> > distro, and they also have flavors for various desktop
>environments.
>> > Gentoo basically has just barely enough manpower to support having
>> > Gentoo.  We try to accommodate as much choice as possible in how it
>> > gets used which is why this model works as well as it does. 
>However,
>> > we can't support having a Gentoo flavor that is GPL-only, or
>GPL-free,
>> > or FOSS-only, or no-systemd-in-the-repo, or initial install
>optimized
>> > for people who read braille.  You can actually tailor Gentoo
>towards
>> > just about any of those directions with some config file tweaks,
>but
>> > you can't just pick the one of 300 iso images that most closely fit
>> > your needs and run the autoinstaller and forget about it.
>> 
>> What about some sort of tagging?  Not bundling or packaging, just
>> occasional (quarterly?) labels, with a matrix indicating how
>difficult
>> it would be to upgrade.  A hint to folks who tend to update less
>often
>> than they should.  A "heads up" that things added or upgraded in the
>> past quarter are going to be very difficult to do if you are starting
>> with something more than three/five/...? quarters older than that. 
>Of
>> course, I suppose if you read the news items as they are released,
>then
>> you should have a pretty good idea of which of them are likely to
>bite
>> you if you wait too long.
>
>Perhaps I misunderstand this, but isn't it as simple as booting off a
>LiveCD/
>USB, chrooting, changing profiles, cleaning up world file and letting
>rip with 
>a full 'emerge -e' @system, followed by @world for good measure?

It might work when moving fron 13.0 to 17.0.
But 17.1 required a seperate tool that actually migrated libraries around the 
filesystem.
I doubt it can be handled reliably that way.


I would rebuild from scratch, copying any config files across.

--
Joost
-- 
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