Feel free to try MSS on a system we had not tested, and let report us by creating an issue.
Tested succesfully on Pypy 5.1.0 on Windows, but speed is terrible.
- Support for Python 2.6 was dropped on 2016-10-08: too old and introduced optimizations broke it.
- Support for Python 3.0, 3.1, and 3.2 was dropped on 2016-10-08: there is no more tests facilities.
By the way, if you find the force, give it a try and tell us if you managed to make one of these versions working (a patch should be quite easy).