Re: [gentoo-user] portage getting mixed up with USE?

[Alan McKinnon <alan.mckinnon@gmail.com>]

On Wednesday 22 June 2011 11:31:09 Daniel Pielmeier did opine thusly:
> 2011/6/22 Alan McKinnon <alan.mckinnon@gmail.com>:
> > On Wednesday 22 June 2011 10:49:04 Daniel Pielmeier did opine 
thusly:
> >> I guess it displays the USE settings how they should be and
> >> afterwards prints the required changes. Or does it build fltk
> >> with USE="-cairo" if you just type emerge -av fltk?
> > 
> > emerge -av fltk
> > 
> > gives exactly the same output as above. The dillo ebuild doesn't
> > seem to be causing this change in behaviour:
> > 
> > RDEPEND="x11-libs/fltk:2[-cairo,jpeg=,png=]
> > 
> > What it looks like is portage is insisting the package.use
> > explicitly states the USE flags needed. This is wrong and I am
> > not about to bloat package.use to cater for every "built with
> > use" occurrence. Or perhaps it's now only looking at installed
> > deps and not it's own dep graph when emerge runs.
> > 
> > Portage should only care about whether the package is already
> > built with use, or will be according to the dep graph
> 
> So you get the same recommendation about the use flag change?

No, I meant the output was the same as:

[ebuild  N     ] x11-libs/fltk-2.0_pre6970-r1  USE="jpeg opengl png 
xft xinerama zlib -cairo -debug -doc" 2,470 kB

I didn't run an emerge -p dillo to see what that would do, I did 
meanwhile add an entry to package.use to make portage shut up and do 
what I want (install claws)

> If you have USE="cairo" in make.conf or it is enabled via some
> profile (desktop?) you have to add >=x11-libs/fltk-2.0_pre6970-r1
> -cairo to package.use to override this on a per package basis. I
> think there is no way around this.

I have only the defaults:

# grep -r cairo /etc/portage/*
/etc/portage/package.use/package.use:x11-libs/cairo cleartype 
lcdfilter -qt4
/etc/portage/package.use/package.use:>=x11-libs/fltk-2.0_pre6970-r1 -
cairo

/etc/make.profile -> 
../var/portage/profiles/default/linux/amd64/10.0/desktop

# emerge --info | grep cairo
USE=" ... cairo ... "

The package.use entry is new.

I still don't understand why portage is making this fuss. It is saying 
that fltk needs to have a package.use entry for -cairo, but that's not 
what it needs. It needs fltk *built* that way, becuase dillo requires 
it and claws-mail depends on dillo.

Portage's own output immediately prior clearly says that it will build 
fltk with USE=-cairo as part of the dependencies. 

This crap about package.use is a red herring, a new behaviour and 
rather unwanted actually. It's adding useless new stuff into the 
process that doesn't belong.

-- 
alan dot mckinnon at gmail dot com