The mcomix application requires app-arch/unrar to view cbr files and app-arch/unzip for cbz files. Currently this is only stated by an elog message, but portage does not prevent uninstallation of these packages, which will render mcomix inoperable. I think this should be prevented by making the mcomix ebuild depend on the unarchiving programs, possibly using local USE vars. Reproducible: Always
Created attachment 402036 [details, diff] patch against mcomix-1.01.ebuild
Created attachment 402040 [details, diff] patch against metadata.xml
See bug #467138.