Package: ftp.debian.org Affects: src:petri-foo petri-foo is in a sad state and not taken care of. It is FTBFS and got out of Debian years ago.
In #885781 upstream states that the package is no longer developed. In #967691 I announced to have it removed if nobody reacted. I think it should be removed. There might be a chance to get rid of libgnomecanvas some time and this is one building block for that.