Your package TurboGears failed to build from source in current F28. https://koji.fedoraproject.org/koji/taskinfo?taskID=24765192 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
https://koji.fedoraproject.org/koji/buildinfo?buildID=1060570 This now builds successfully in rawhide and F28. I'm not going to submit an F28 update for it since nothing has actually changed in the package itself.