plv8 package in PostgreSQL 9.4 Yum repositories

Is there a specific reason why plv8 doesn't get distributed anymore with the Yum repositories for PostgreSQL 9.4? 

In the list of available/supported packages, plv8 is mentioned on http://yum.postgresql.org/news-packagelist.php and it was available up to PostgreSQL 9.3. 

As far as we see, recent sources of plv8 work fine with 9.4 but it's quite some trouble to maintain and build every recent version, with the risk of compatibility problems, when it's not availble in the repositories.

Thanks for the info.