issue with python3 and pathlib in requires.txt (eyeD3)

[David Brownlee <abs%absd.org@localhost>]

I'm looking at updating eyeD3 to 0.8.4 for python3 compatibility, and
it generates a requires.txt of:

six
pathlib
python-magic

[display-plugin]
grako

pathlib is built into python3, so eyeD3 fails to run with:

pkg_resources.DistributionNotFound: The 'pathlib' distribution was not
found and is required by eyeD3

Removing pathlib and six manually from the requires.txt avoids this
issue - is there a better way to handle this?

Thanks

David