...The Fedora project moved /usr/bin/python to point to /usr/bin/python3 instead of /usr/bin/python2. The immediate result is that Swift no longer builds on Fedora Rawhide because of, surprise, Python errors. This may be a lot of work, so before running off and getting into a big mess o' Python changes, I asked on the Swift forums whether anybody is already working on it and, if not, well, guess it's time to put the build scripts on the blocks and do some major changes.