The po plugin is broken by po4a 0.58+

Hi Joey, maybe you have upgraded the machine running Branchable some time this summer or at late spring? It seems that Ikiwiki is now affected by an incompatibility with recent po4a versions.

Do you thing it would be possible to patch Ikiwiki on Branchable and in Debian ?

Thanks a lot for keeping Branchable available to its current users. It is very kind and I appreciate it a lot.