Show HN: Puppy – CLI for managing Python environments and notebooks

- fast cross-platform CLI (Bash, Windows) that transparently wraps Pixi and uv, for best of both worlds

- base layer python is completely isolated from OS or other python environments - everything lives in one folder, nothing goes on PATH

- generates notebook kernels

- generates, executes notebooks from CLI

- from zero python to deployed app in a few commands that can be packaged into a single Bash or Powershell script (examples in .github/workflows)