On Tue, 20 Feb 2018 09:56:15 +0000, Holger Hoffstätte wrote: > On Mon, 19 Feb 2018 15:29:52 +0100, Branko Grubic wrote: > >> On Mon, 19 Feb 2018 12:55:08 +0000 (UTC) >> Holger Hoffstätte <[email protected]> wrote: >> >>> Hey, >>> >>> I'm not exactly new to portage, but one thing that I cannot seem to >>> figure out is how to rebuild all dependants of a package. Not >>> *dependencies*, dependants: packages that require said package. >>> >>> As a recent example: whenever go (the language) is updated to a new >>> version (say from 1.9 to 1.10, as it happended recently), I'd like to >>> rebuild docker & friends - or more specifically 'things that are >>> compiled with go'. >>> >>> The --changed-deps option doesn't seem to do the trick, so instead I >>> manually do a -vp --depclean on go and manually --oneshot all >>> installed packages that have their hands on it. This is obviously >>> stupid and error-prone. >>> >>> Am I missing something or is this really not easily possible? >>> Basically I'm looking for a hard --oneshot --revdep-rebuild with a >>> package argument. >>> >>> thanks, >>> Holger >>> >>> >> >> I never needed this, so I don't know how to do it directly with emerge >> (is it possible?), but you can use equery like this to get a list: >> >> equery -q d dev-lang/go >> >> -q/--quiet (minimal output) >> (d)epends (list all packages directly depending on ATOM) >> >> to get a list of packages installed which depend on dev-lang/go >> you can filter versions out of it and feed that to 'emerge -av1'. >> >> Or if you trust this ugly one-liner without filtering (probably ugliest >> thing, but seems to do the job): >> >> emerge -av1 $(for i in $(equery -q d sys-apps/util-linux); do echo >> "=$i"; done) > > That was useful and saved me the time to sed & grep my way through the > equery output. Turning this into a generic script is easy enough.
For the peanut gallery.. Turns out it's not so clear-cut since equery d finds *all possible* dependants, including those for unset USE flags. Oh well..depclan & grep here we go.. -h
