If a package, that is itself dependency of another package could not be found Portage usualy gives you some error-message like: There is no Package to satisfy "foo" Package required by "bar". IT would be nice if portage could also show you which USE-Flags to set to avoid this dependency at all (if possible). There is no Package to satisfy "foo" Package required by "bar" (USE=bar). This would be extremly usefull for users using rsync_excludes because they have expensive administrative work to do each time this error occures: 1: rmline bar from rsync_excludes 2: emerge --sync 3: emerge -a foo 4: if there is yet anoter unresolved dependency, goto 1 again. As xou can see, having to do 5-6 emerge --syncs for a big dependency-tree can be a little bit frustrating, if you can see afterwards, that all the work could have been avoided by changing 1 unnescecary use-flag. Reproducible: Always