KMail has a dependency to mailcommon (in the kdepim repo/tarball) Reproducible: Always Steps to Reproduce:
Created attachment 248947 [details, diff] patch to ebuild
Yep. but do you think it's better to provide mailcommon with kmail or kdepim-common-libs? (along with message* stuff).
Probably :)
Status here?
Looks fixed in kde overlay.