uv sync should run with --no-dev

[hynek]

Currently, there's only one flat namespace in tool.uv.dev-dependencies that people are likely to use to define their dev environments. When not told otherwise, uv sync installs them.

For example

[project.optional-dependencies]
tests = ["pytest"]
docs = ["sphinx"]

[tool.uv]
tool.uv.dev-dependencies = [".[tests,docs]", "ipython"]

This is not stuff you want (always) in your tox environments.

Extras for dev environments are totally coming, but until then, you should pass --no-dev.

[gaborbernat]

I am open to that idea. However, I consider this an enhancement and not a bug. Also, I would prefer if adding or disabling this flag can be configurable and by default can be enabled.

[hynek]

I cannot change the labels. 🤓

Having a flag would be great -- but I would suggest to turn it off for now, since the behavior surprising. You pass extras, but under certain conditions you get everything and can't turn it off.

So, quick fix would be to disable it altogether until uv grows proper support.