commoncpp2 is going to be merged with uCommon. We therefore need such a package...
*** Bug 309629 has been marked as a duplicate of this bug. ***
Created attachment 249433 [details] ucommon-4.0.2.ebuild
Created attachment 273265 [details] ucommon-4.3.2.ebuild
Created attachment 291263 [details] ucommon-5.0.6.ebuild"
This finally got into tree, congrats :)