Also define stdin or it will crash on Python + cx_Freeze: WindowsErro…

[melroy89]

Using Python + cx_Freeze will result into an exception:

OSError: [WinError 6] The handle is invalid

This is because there is no stdin defined in the service.py file for the subprocess.Popen() command. Underwater the subprocess tries to create a handle which also looks for stdin under Windows this gets a bit tricky when using Bash or cx_Freeze. So, I defined stdin as well, and the crash is gone. Optionally you can also use:

FNULL = open(os.devnull, 'r')
subprocess.Popen(.... ,stdin=FNULL)

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Trying to fix #536 & #547 as well.

[lmtierney]

Merged, thank you!