Re: [gentoo-user] Downgrading glibc prevented by emerge/portage...but why initiated?

Hi,

WRONG! :) :) :)

I did something different, but it was the same amount of "wrong".

I masked =sys-libs/glibc-2.25-r4.

And now I remember why I did this: It gave a compilation error:
(As some other packages) it has problems with my texinfo installation
as it seems.

As suggested I run perl-cleaner, I checked my environment for
suspicious entrie...but looks fine (at least for me).

I really wnat to get rid of this damn texinfo problem and I 
desperately aksing for help, since I didn't found the problem myself.

But before bombarding the mailinglist with TONS of logs I would like
to ask, what logging to post first?

Cheers and thanks for the support in advance!
Meino





On 09/12 07:32, Franz Fellner wrote:
> My guess: You have glibc-2.24-r4 and one of the 2.25 with revision <-r4
> listed WITH EXACT VERSION AND REVISiON in your package.accept_keywords. The
> recent glibc-cleanp remove those 2.25 revisions and only left 2.25-r4 and
> 2.24-r4 Leaving you with the downgrade as only option to get the most
> recent available version.
>
> 2017-09-12 9:17 GMT+02:00 Alan McKinnon <alan.mckinnon@×××××.com>:
>
> > On 12/09/2017 05:43, tuxic@××××××.de wrote:
> > > Hi,
> > >
> > > got a problem this morning:
> > >
> > >>>> Verifying ebuild manifests
> > >>>> Running pre-merge checks for sys-libs/glibc-2.24-r4
> > >  * Sanity check to keep you from breaking your system:
> > >  *  Downgrading glibc is not supported and a sure way to destruction
> > >  * ERROR: sys-libs/glibc-2.24-r4::gentoo failed (pretend phase):
> > >  *   aborting to save your system
> > >  *
> > >  * Call stack:
> > >  *                ebuild.sh, line 115:  Called pkg_pretend
> > >  *                ebuild.sh, line 348:  Called
> > toolchain-glibc_pkg_pretend
> > >  *   toolchain-glibc.eclass, line 507:  Called die
> > >  * The specific snippet of code:
> > >  *                    die "aborting to save your system"
> > >  *
> > >  * If you need support, post the output of `emerge --info
> > '=sys-libs/glibc-2.24-r4::gentoo'`,
> > >  * the complete build log and the output of `emerge -pqv
> > '=sys-libs/glibc-2.24-r4::gentoo'`.
> > >  * The complete build log is located at '/var/tmp/portage/sys-libs/
> > glibc-2.24-r4/temp/build.log'.
> > >  * The ebuild environment file is located at '/var/tmp/portage/sys-libs/
> > glibc-2.24-r4/temp/die.env'.
> > >  * Working directory: '/var/tmp/portage/sys-libs/glibc-2.24-r4/homedir'
> > >  * S: '/var/tmp/portage/sys-libs/glibc-2.24-r4/work/glibc-2.24'
> > >>>> Running pre-merge checks for media-sound/pulseaudio-11.0
> > >  * Determining the location of the kernel source code
> > >  * Found kernel source directory:
> > >  *     /usr/src/linux
> > >  * Found sources for kernel version:
> > >  *     4.13.1-RT
> > >  * Checking for suitable kernel configuration options...
> > >  [ ok ]
> > >  * A preallocated buffer-size of 2048 (kB) or higher is recommended for
> > the HD-audio driver!
> > >  * CONFIG_SND_HDA_PREALLOC_SIZE=64
> > >
> > > I would interpret this as:
> >
> > Looks to me like you are assuming the glibc maintainer has more
> > knowledge of the future that he/she actually has.
> >
> > >
> > > In the past emerge had updated glibc to a higher version as it want it
> > > to install now and prevented the latter becayse it would be downgrade,
> > > which in turn would render my box useless.
> >
> > No, not useless. It's a safety check for just in case. And now you must
> > bypass the checks
> >
> > >
> > > But why updateing to higher version in the first step
> >
> > Because you had a valid ebuild in the tree that said to do it ?
> > >
> > ....or attempting
> > > to downgrade now?
> >
> > Because now you don't have that valid ebuild anymore?
> >
> >
> > >
> > > And finally...ANy update is blocked for now it seems...how can I get
> > > out of this?
> >
> > Why is glibc wanting to downgrade? What is your current version?
> >
> > both of these versions are in the tree: (~)2.24-r4^s (~)2.25-r4^s
> > so there is at least 1 glibc higher than what portage wants to downgrade
> > to.
> >
> > You need to find out why 2.25-r4 is not being used. Usual tools, e.g.:
> >
> > grep -r glibc /etc/portage
> > and any other methods you prefer
> >
> > As a last resort if the ebuld maintainer screwed up, you can bypass the
> > safety check. Edit ${PORTDIR}/eclass/toolchain-glibc.eclass and comment
> > out the check in
> > toolchain-glibc_pkg_pretend()
> >
> > This is unlikely to destroy the system. Cause a problem - maybe. Destroy
> > it? No. The wording of the safety check is hugely over-dramatic to
> > discourage people from downgrading willy-nilly without thinking
> >
> > --
> > Alan McKinnon
> > alan.mckinnon@×××××.com
> >
> >
> >