On Friday 27 October 2006 13:06, Dale wrote:
> I am trying to keep my new install nice and clean, nothing useless
> lurking around.  I run emerge -p --depclean world on occasion and I
>
> finally got this one:
> > >>> These are the packages that would be unmerged:
> >
> >  sci-libs/fftw
> >     selected: 3.0.1-r2
> >    protected: none
> >      omitted: none
[SNIP]
>
> So I did a little research, to make sure it was really not used by
>
> anything.  This is what I got:
> > root@smoker / # equery depends fftw
> > [ Searching for packages depending on fftw... ]
> > media-libs/libsamplerate-0.1.2
[SNIP]
> So it seems libsamplerate needs fftw, and a few things need
> libsamplerate.  So if removing fftw breaks libsamplerate then could that
> lead to the ones needing libsamplerate breaking to?  Sounds like
> dominoes falling to me.

Sounds like you've disabled the fftw use flag of libsamplerate. --depclean is 
generally pretty safe when `emerge -DNp world` doesn't want to do anything.

Better to use `dep -L fftw` from app-portage/udept or `pquery --vdb --revdep 
sci-libs/fftw` from sys-apps/pkgcore.

-- 
Bo Andresen