Blockers or slot conflicts on a Perl update?

[dilfridge]

Many people run into portage problems when there's a major version Perl update. (Yes we're working to improve this.)

There's a lot of advice floating around, some of it correct, some of it unnecessary, and some of it straightaway harmful or dangerous. So, if you have problems with updating Perl, please visit our wiki page for up-to-date information (including both easy advice and the background story):

https://wiki.gentoo.org/wiki/Perl

Cheers! Your friendly Gentoo Perl team.

Stuck, --kallamej

[jlpoole]

Yes, I ran into problems performing a regular update:

[jesnow]

There used to be warnings on portage updates that you were possibly in for some issues, and you should update portage first. Could we have some warning that a problematic update is looming? Like am eselect news item or something that says this is coming and where to go for the officially approved procedure?

This perl update was a nightmare, and my system is vanilla stable.

Thanks,

Jon

[saboya]

Although I agree it's not a simple update, emerging with backtrack 50 solves most issues with the Perl update, I'd hardly call it a nightmare.

[jesnow]

And how long did it take people to figure out that was what to do? There were at least three different "this is how I did it" solutions that all involved a lot of time remerging broken packages. Not what you want on a "stable" system. There shoudl be a standard operating procedure published for the upgrade by the time it hits stable, as there often is for things that break your system before it's fixed, like major compiler or glibc updates.

I'm not whining, we want the maintenance of a stable system to be pretty straightforward. Gentoo has gotten much better in that regard since I started back in whenever.

[Zucca]

Strangely I have had no problems with perl on my amd64 and ~amd64 systems.
But I've had major blockages caused by python and some by ruby.

I've put --backtrack=<some large number close to 1000> on my default opts. That might have helped me.
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..: Zucca :..

[Shoaloak]

Thanks for the post, was already scratching my head when I failed to solve these update problems by myself.

[piotr5]

ehm, the problems with perl is that emerge -uDNav --with-bdeps y --backtrack 100 @world will fail whenever a major change happened to perl, especially if you've installed about a thousand perl-packages. some of them simply are guaranteed to stop being supported in new versions? I don't know. anyway, thanks for gentoo-perl-helpers!

[pacon]

Hello,

Today I was troubleshooting a problem when running:

[direwolf]

Thanks for posting that, pacon.

I had the exact same issues.

Rolling through 156 perl module installs right now, fingers crossed!
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- Jerry Garcia

[Wallsandfences]

I run into a blocker as well, tried the solution above to no avail:

[direwolf]

Well that's your list of packages. Pipe it to a file and turn it into a list.

Then run:

[jesnow]

I got fed up and just unmerged perl, then re-merged it and did perl-cleaner -all
that's for sure not the recommended way, but it worked.

[Wallsandfences]

Didn‘t unmerging perl just kill your system??

[Hu]

No, there are many systems that are quite usable without perl. There may have been some applications broken, but all the functionality required for rebuilding perl should be fine.

[jesnow]

I wouldn’t try to do anything else like reboot in between, but in my case
It seemed so easy I’m surprised it’s not the standard way. Has to be a reason.
Jon

[teika]

TL;DR: To upgrade perl, use gentoo-perl-helpers. Period.

Details:
"emerge world" (or "emerge perl") results in slot conflicts? It's a repeated complaint.
Fortunately, with gentoo-perl-helpers, perl upgrade works like a charm, (though it'll require some manual work.)

For usage, see the wiki article "perl".
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[sao98021]

yesterday i began the process of migrating over. it was from all the way back from 2019 i think. lol

i broke portage and emerge, prior to getting rid of python gettext perl gdbm autoconf and like 5 other things, so i had to make install them all outside of portage 3 other things and link that python to portage tarball i downloaded/extracted then finally emerge runs again. thannk you devs for all the work

[pjp]

[split] Perl upgrade, no updates for 1 year 250 days
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