I've seen that there's some recent development going on at tlslite [1] and it's not officially stated that this is the successor of the original package, so it would be best to package this as the fork like it is with binaries "python{,3}-tlslite-ng".
[1] https://github.com/trevp/tlslite DS -- 4096R/DF5182C8 46CB 1CA8 9EA3 B743 7676 1DB9 15E0 9AF4 DF51 82C8 LPI certified Linux admin (LPI000329859 64mz6f7kt4) http://www.danielstender.com/blog/