Fedora still ships python-pyphen 0.9.1 which was released in 2013. The latest version is 0.9.5. With the current Fedora version I get test failures in WeasyPrint's test suite. as I hope a newer version of WeasyPrint fixes some of these tests. Something is different between pypiy and Fedora's 0.9.1 version of pyphen but I hope a newer version of pyphen will work just fine (see also https://github.com/Kozea/WeasyPrint/pull/989) so I'm setting this as blocking bug 1475749. Again: I'm willing to co-maintain this package and do the change myself if you add me via pagure.
update now in rawhide