It would be nice if all the ebuilds the inherit from php-ext-source-r2 (and by proxy, all the ebuilds that inherit eclasses that inherit from php-ext-source-r2) could support epatch_user. I noticed that base.eclass already included epatch_user in it; so php-ext-source-r2 could be made to inherit base, or epatch_user support could simply be added. Reproducible: Always
I think this easily would become very complicated. E.g it would not be possible to add a path only for the 5.4 version. Also, the php eclass overrides almost all phase functions, so it makes no sense to inherit base. I am also unsure if many would want to make use of this feature.