Please verify your dodoc statements, and make sure they are not being executed on directories. See the blocked bug for more details.
Created attachment 290323 [details] Build log
Created attachment 317414 [details, diff] coherence-0.6.6.1.ebuild.diff The patches should fix the issue plus do correctly install the man page. The actual "error" happens in distutils_src_install with DOCS="docs/*" when it encounters the sub-folder docs/man. The file in docs/man was installed by distutils_src_install depsite the warning, just not as man page. Tested both versions on amd64.
Created attachment 317416 [details, diff] coherence-0.6.6.2.ebuild.diff
removed