Re: [gentoo-user] Re: Masked package needs itsself ?

[Volker Armin Hemmann <volkerarmin@googlemail.com>]

On Mittwoch 26 August 2009, meino.cramer@gmx.de wrote:
> Paul Hartman <paul.hartman+gentoo@gmail.com> [09-08-26 18:30]:
> > On Wed, Aug 26, 2009 at 10:50 AM, Volker Armin
> >
> > Hemmann<volkerarmin@googlemail.com> wrote:
> > > On Mittwoch 26 August 2009, Alan McKinnon wrote:
> > >> On Wednesday 26 August 2009 04:37:07 Nikos Chantziaras wrote:
> > >> > On 08/26/2009 05:32 AM, meino.cramer@gmx.de wrote:
> > >> > > Hi,
> > >> > >
> > >> > > while trying to update my gentoo I got this:
> > >> > >
> > >> > > !!! All ebuilds that could satisfy ">=media-libs/jpeg-7" have been
> > >> > > masked. !!! One of the following masked packages is required to
> > >> > > complete your request: - media-libs/jpeg-7 (masked by: ~x86
> > >> > > keyword)
> > >> > >
> > >> > >
> > >> > > I read this as jpeg-7 needs jpeg-7 to update itsself and cannot
> > >> > > cause it is masked.
> > >> > > I dont like to update to jpeg-7 since this package is used in so
> > >> > > many othe rprograms and it is masked.
> > >> >
> > >> > Don't mask it.  Install it, but also install media-libs/jpeg-compat
> > >> > alongside it so packages won't break.
> > >>
> > >> I'm having a hard time imagining how a package like jpeg could cause
> > >> breakage.
> > >>
> > >> Such breakage would cause half the apps on any typical workstation to
> > >> have to be rebuilt or worse - recoded.
> > >> Surely, surely not?
> > >
> > > /usr/lib64/libjpeg.so.62 changed to /usr/lib64/libjpeg.so.7.0.0
> > >
> > > hilarity insued.
> > >
> > > Seriously all packages on my system that broke installed fine with
> > > jpeg-7. It was just a long revdep run. But no breakage. Well, some
> > > breakage because until revdep rebuilt all the packages affected,
> > > everything using jpegs (and that is... a lot) didn't work ;)
> >
> > In my gentoo, portage upgraded to jpeg-7 and added jpeg-compat-6b at
> > the same time. Nothing had to be rebuilt and everything "seems" to be
> > working okay so far.
>
> I got this one, which seems to tell me, that joeg-compat is also
> masked ???
>
>
> solfire:/home/mccramer>emerge jpeg-compat
> Calculating dependencies... done!
>
> !!! All ebuilds that could satisfy "media-libs/jpeg-compat" have been
> masked. !!! One of the following masked packages is required to complete
> your request: - media-libs/jpeg-compat-6b (masked by: ~x86 keyword)
>
> For more information, see the MASKED PACKAGES section in the emerge
> man page or refer to the Gentoo Handbook.

*sigh* again, it is not 'masked'. Masked means 'package.mask entry' in gentoo-
user speak. Masked in package.mask means 'unfit for human consumption'.

Masked by unstable keyword means exactly that: the package is marked as 
unstable at the moment. One of your many packages installed depends on an 
unstable package. If you only have stable packages installed, you just hit a 
bug. But if you have unstable packages installed, this happens all the time. 
Add jpeg7 and -compat to your package.keywords file and go on.

Another reason, why mixing trees is a bad idea...