Pip installed CLI tool not in PATH

[matthias-Q]

Hi, I want to use nix flakes for a develop environment. The cli tool (dagster) can be installed via pip. I am able to set everything up - and the python library part can be imported correctly. However, the dagster cli command cannot be found. Tab completion however suggest dagster. I haave pushed by flakes + lockfiles in a repo: https://github.com/matthias-Q/nixgster

Thanks, Matt