Update: I was able to find the mercurial repo on https://bitbucket-archive.softwareheritage.org/projects/zi/zimbu/zimbu.html https://bitbucket-archive.softwareh

Update: I was able to find the mercurial repo on https://bitbucket-archive.softwareheritage.org/projects/zi/zimbu/zimbu.html https://bitbucket-archive.softwareheritage.org/projects/zi/z..., looks like it hadn't been updated since 2016.