pip + venv with requirements.txt is 90% of the way there. the bare minimum most people need on top of this is some form of lockfile. without this, builds are no

pip + venv with requirements.txt is 90% of the way there. the bare minimum most people need on top of this is some form of lockfile. without this, builds are not reproducible. it's frustrating to ask users to install an extra tool (like poetry or whatever) when python comes with almost everything. at least `pyproject.toml` is standardized in a PEP, so you don't have to force users to choose a specific tool to resolve it.