uv as hatch virtual environment backend

[jesshart]

I think it is worth noting somewhere with more exposure (i.e., here) that you can use uv as the virtual environment backend for hatch.

For example, installing pandas, juyterlab, ibis-framework, and scikit-learn without uv I timed it at 16.8 seconds. With uv? 0.61 seconds!

And yes, I ran hatch env remove to be sure.

I did this by setting the following in my pyproject.toml:

[tool.hatch.envs.default]
installer = "uv"

By the way, use this with hatch-pip-compile and you get yourself a transitively pinned requirements.txt file as well (thanks @juftin)

References

• Release v1.10.0
• Hatch doc: Virtual environment
• hatch-pip-compile

[ofek]

I tried to make it as prominent as possible:

• https://github.com/pypa/hatch#features
• https://hatch.pypa.io/latest/

[jesshart]

Not a criticism! I have been loving hatch but this is a plus many people miss when I am having conversations about tooling.

For example, I will hear this,

uv is faster than hatch

To which I now respond,

You can use uv as your env backend in hatch :)

[ofek]

I see, good point!