Sometimes 'diff' is needed to be installed in /bin when /usr/bin is not yet accessible (like in sys-apps/hprofile). Had to patch the ebuild (with optional USE flag, patch following). BTW, is it worth not keeping this binaries in /bin?
Created attachment 148995 [details, diff] ebuild patch optionally (by USE flag "rootfs" installs binaries into /(s)bin instead of /usr/(s)bin
I no longer maintain hprofile (or use Linux) so I'm unable to help any further. Sorry.
i'm not interested in shuffling a lot of binaries from /usr to / just to satisfy a random package