Implement a package manager for hatch

[karthiknadig]

This is so you can handle creation and package management. Think adding dependencies, if users want to add new dependencies, if they use built-in pip will add those dependencies to the wrong lock file.

[flying-sheep]

There are no lock files yet for Hatch, so I think “use uv if available in the venv, else use pip” is close enough to Hatch’s behavior for now. Or am I missing something?

[karthiknadig]

doesnt the pyproject.toml support something like:

[tool.hatch.envs.types]
extra-dependencies = [
  "mypy>=1.0.0",
]

If you control the package management, you could update this.

[flying-sheep]

There is no hatch dep add, only hatch dep show and hatch dep hash.

With Hatch, I usually add the deps declaratively to project.dependencies or project.optional-dependencies.*, and they end up in envs via $env.features or so, I very rarely add things to to $env.(extra-)dependencies.

In the future, I’d add things to dependency groups and reference those from hatch envs.