Hello all,
I'm trying to get racket to talk to a virtual serial port on windows 10, 
and I've previously used code based on this email thread 
It used to work and now for some reason it fails with an error 87 when I 
try to read from the input port. Did something change/break in windows or 
racket? It's been a while since I needed to use the serial port in Racket 
so it may be something on my end. 

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