This is missing in opendkim: pkg_setup() { use lua && lua-single_pkg_setup } Without it build fails if LUA_SINGLE_TARGET="" and USE="-lua".
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fef8ee3e293f66f6b88e4a4727870d2c755fe506 commit fef8ee3e293f66f6b88e4a4727870d2c755fe506 Author: Sam James <sam@gentoo.org> AuthorDate: 2021-01-23 22:36:06 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2021-01-23 22:42:14 +0000 mail-filter/opendkim: conditional lua-single_pkg_setup Closes: https://bugs.gentoo.org/766677 Package-Manager: Portage-3.0.14, Repoman-3.0.2 Signed-off-by: Sam James <sam@gentoo.org> mail-filter/opendkim/opendkim-2.10.3-r26.ebuild | 4 ++++ 1 file changed, 4 insertions(+)