Several packages depend directly on sys-apps/module-init-tools instead of virtual/modutils and need to be cleaned before unmasking sys-fs/udev-181. Reproducible: Always
There are a couple of ways we can approach this: 1) since virtual/modutils is in system, we can drop the dependencies on sys-apps/module-init-tools. 2) We can remove virtual/modutils from system and make all of the packages depend on the virtual. I will post to -dev to see which is the preferred way.
I'm pretty sure I've got all of these migrated in ebuilds and eclasses. Please reopen if I missed any. As for removing it from the system packages, that's really a seperate discussion for -dev.