I'm trying out uv to manage my Python project's dependencies and virtualenv but I can't see how to install all my dependencies for local development, including the dev dependencies.
In my pyproject.toml I have this kind of thing:
[project]
name = "my-project"
dependencies = [
"django",
]
[tool.uv]
dev-dependencies = [
"factory-boy",
]
[tool.uv.pip]
python-version = "3.10"
I can do the following to create a virtualenv and then generate a requirements.txt lockfile, which does not contain dev-dependencies (which is OK, because that is for production):
$ uv venv --python 3.10
$ uv pip compile pyproject.toml -o requirements.txt
But I can't see how to install all the dependencies in my virtualenv.
uv pip sync will use the requirements.txt.
There's also uv sync but I don't understand how that differs, and trying that generates an error:
error: Multiple top-level packages discovered in a flat-layout: ['conf', 'hines', 'docker', 'assets', 'node_modules'].
To expand on the other good answers by Phil
With uv >= 0.4.27 we can use the new Python packaging feature dependency groups to make pyproject uv-agnostic:
[project]
name = "my-project"
dynamic = ["version"]
requires-python = ">=3.10"
dependencies = ["django"]
[dependency-groups]
dev = ["factory-boy"]
Also can make use of .python-version to pin the project Python version, which be created manually or by uv python:
uv python pin 3.10
Check version written to file
$ cat .python-version
3.10
With the above configuration in place, a developer virtualenv can be created with:
uv sync
Finally activate venv:
source .venv/bin/activate