Upstream udev appears to have (long ago) changed to using serial ports having GROUP="dialout", however, eudev is still reverting this. For example bug #691746 changed gpsd to use the new dialout group and it currently fails to work with eudev 3.2.9 as a result Is there something holding us back from following this change and removing the "revert" from the eudev package? I propose the following patch: --- ./repos/gentoo/sys-fs/eudev/eudev-3.2.9.ebuild 2020-06-08 16:27:48.656645383 +0000 +++ /tmp/eudev-3.2.9.ebuild 2020-11-04 16:57:21.565077143 +0000 @@ -84,10 +84,6 @@ } src_prepare() { - # change rules back to group uucp instead of dialout for now - sed -e 's/GROUP="dialout"/GROUP="uucp"/' -i rules/*.rules \ - || die "failed to change group dialout to uucp" - eapply_user eautoreconf }