On Sun, Aug 25, 2013 at 01:48:58AM +0200, Michael Schwendt wrote: > On Sat, 24 Aug 2013 16:35:22 +0200, Suvayu Ali wrote: > > > > package. Run "rpm -e --test libvdpau" to display those dependencies. > > > The package may be renamed (or the contents moved to a different > > > package) without breaking the dependencies. > > > > > > The repoquery tool can distinguish between --exactdeps and --alldeps > > > queries: > > > > > > $ repoquery --exactdeps --whatrequires libvdpau > > > $ > > > > I was also confused by this for a long time. Thanks for the > > explanation. Given the two kinds of dependencies, shouldn't one always > > query for --alldeps? > > Yes, preferably. > > For repoquery that option is the default for a long time (but it hasn't > been the default always). > > > That seems the more practical option. If that is > > the case, what good is `rpm -q --whatrequires'? > > Well, it's a matter of definition. That low-level RPM based query doesn't > operate on package names, but on "things" provided by packages. RPM > dependencies are not restricted to package names. With the example > of "libvdpau", even a completely different package with a different name > could provide something called "libvdpau". It's coincidence that it's > also the name of an installed package. The package name is also just one > of the "things" provided by the package: > > $ rpm -q --provides libvdpau > config(libvdpau) = 0.7-1.fc20 > libvdpau = 0.7-1.fc20 > libvdpau(x86-64) = 0.7-1.fc20 > libvdpau.so.1()(64bit) > libvdpau_trace.so.1()(64bit) > > Nowadays, with automatic dependencies on the actual library name, > typically there is no extra dependency on the package name anymore. > > $ rpm -q --whatrequires 'libvdpau.so.1()(64bit)' > gstreamer1-plugins-bad-free-1.1.3-1.fc20.x86_64 > gstreamer-plugins-bad-free-0.10.23-19.fc20.x86_64 > > That's why RPM told the truth that no package requires "libvdpau" anymore. > > > I also notice that --alldeps is a repoquery only option, does that mean > > the only way to get this info when offline is to do `rpm -e --test', > > `yum remove', or call repoquery with -C? > > Yes. "rpm -e --test" is a very very old command, btw. Thanks a lot Michael! :) -- Suvayu Open source is the future. It sets us free. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
