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Because this has been tested at Meta / Facebook scale which means it's faster for any Python codebase massive and small.

Since Meta built this, I have confidence this will be maintained more than others and I will use this and ask for Pyrefly experience in the future.



I suggest you try uv and ruff and then see if you still think only companies the size of meta can provide quality tooling.


This feels like a somewhat closed minded approach given both tools are in their infancy




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