watts is not OS independent

[samgdotson]

Currently, the setup.cfg file specifies watts as "OS Independent." However, there are at least two issues preventing Windows from supporting watts:

1. The select.select([p.stdout, p.stderr]) call breaks because select.select cannot work with streams on windows. The workaround for this is a non-blocking pipe which is addressed by @paulromano branch nonblocking-pipe (which was originally motivated by Using communicate() rather than read() in fileutils.run() #49).
2. The fcntl is not supported by windows. There may be some substitutes. This appears integral to @paulromano's aforementioned non-blocking pipe.

This issue can be closed when the developers decide to either

• add support for windows machines
• indicate which operating systems are required

[nstauff]

@paulromano - can you check this issue and maybe discuss with Sam about potential solutions.

[paulromano]

Yes, I'm working on a resolution for this and plan to put in a PR