Re: [gentoo-user] emerge --depclean and fftw

[Dale]

Bo Ørsted Andresen wrote: I somehow get the feeling you haven't quite understood what I have said. So I'll try again. media-libs/libsamplerate only depends on sci-libs/fftw if you have the fftw use flag enabled. # emerge -vp1 libsamplerate [...] [ebuild R ] media-libs/libsamplerate-0.1.2 USE="-fftw -sndfile" 0 kB I.e. if you have no "-" in front of fftw then it needs fftw. Further what I have said is that `equery depends` ignores that condition. So you have three other alternatives for `equery depends` which will be able to show reverse dependencies. I've already mentioned two. The third is adjutrix from sys-apps/paludis (version 0.8.2 would be necessary there). pquery or dep does seem more suited for this task though since they both take your use flags into consideration whereas adjutrix will show something like: # adjutrix -D /var/db/pkg -r fftw Reverse dependencies for 'sci-libs/fftw': media-libs/libsamplerate-0.1.2 DEPEND on one of: sci-libs/fftw-3.0.1-r2::installed (condition USE='fftw') [...] and leave it up to you to check whether the USE='fftw' condition is true. Finally I would like to say that whether you want to use testing software is your own decision. But it certainly does do a better job than equery for reverse dependencies. That's true no matter which of the three mentioned alternatives you would choose. And I wouldn't suggest them if I thought they would set you computer on fire... Ahhh, I see now what you are saying.  Default is to use fftw unless I turn it off.  Gotcha now.  I did see what you were saying about equery depends though.  It sort of makes assumptions on USE whether they are true or not.  I am disabled and I hurt a lot so sometimes it takes me a while to get my light bulb to turn on.  ;-) I do use some testing stuff, like KDE and some other things that won't make me bork up to much.  I do try to be very careful though when it comes to things like python, gcc and those critical things.  I messed up my system once and had to install from scratch and I learned to be careful.  Gentoo is a bit harder to install and takes longer too than say Mandriva.  I knew they wouldn't set my system on fire but I always ask first before I do anything I may regret.  I'm also on dial-up so I prefer not to have to download ALL the source stuff again either. I see what you are saying and have learned a lot.  Thanks for the help. Dale :-)  :-)