Cheroot uses _pyio incorrectly

[ryflyio]

Attempting to use Cheroot (via CherryPy) on Cygwin has revealed that Cheroot imports a private module, _pyio. "Outside" use of _pyio this way is not supported.

CherryPy should use a different module or interface for this functionality (

cheroot/cheroot/makefile.py

Line 5 in 86c6b24

import _pyio as io

).

A side-effect of fixing this issue is that this may help CherryPy run on Cygwin once again.

See https://bugs.python.org/issue32287 for more discussion or context.

(originally posted here: cherrypy/cherrypy#1704 (comment))

[webknjaz]

Fixed by df20359

[webknjaz]

@bangorr it's on PYPI now: https://pypi.org/project/Cheroot/6.2.2/