[bythckr]

What is the use case?

FYI All I know about crystal is that it's Ruby with Python style syntax.

[viraptor]

> it's Ruby with Python style syntax.

It's not. It's a language on its own with Ruby-style syntax and close-but-not-same semantics.

[IshKebab]

You have some Python code but you don't want it to be slow and full of type errors.