root 6.16.00-5.fc31 fails to build with Python 3.8.0b1. Scanning dependencies of target G__PyROOT make[3]: Leaving directory '/builddir/build/BUILD/root-6.16.00/builddir' make -f bindings/python2/CMakeFiles/G__PyROOT.dir/build.make bindings/python2/CMakeFiles/G__PyROOT.dir/build make[3]: Entering directory '/builddir/build/BUILD/root-6.16.00/builddir' make[3]: *** No rule to make target 'libpython2.7/libpython2.7Tree.so', needed by 'bindings/python2/G__PyROOT.cxx'. Stop. make[3]: Leaving directory '/builddir/build/BUILD/root-6.16.00/builddir' make[2]: *** [CMakeFiles/Makefile2:33956: bindings/python2/CMakeFiles/G__PyROOT.dir/all] Error 2 make[2]: Leaving directory '/builddir/build/BUILD/root-6.16.00/builddir' make[1]: *** [CMakeFiles/Makefile2:33927: bindings/python2/CMakeFiles/PyROOT.dir/rule] Error 2 make[1]: Leaving directory '/builddir/build/BUILD/root-6.16.00/builddir' make: *** [bindings/python2/Makefile:212: bindings/python2/CMakeFiles/PyROOT.dir/rule] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.TJytYw (%build) This seems unrelated to Python 3.8 itself. For the build logs, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.8/build/928144/ For all our attempts to build libunity with Python 3.8, see: https://copr.fedorainfracloud.org/coprs/g/python/python3.8/package/root/ Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.8: https://copr.fedorainfracloud.org/coprs/g/python/python3.8/ Let us know here if you have any questions.