option to use uv

[mbway]

It may be beneficial to offer uv as a backend for maturin develop rather than hard-coding pip as the only available backend.

I was thinking about this while thinking of ways to speed up the import hook tests as a significant part of those tests is waiting for maturin develop. Compilation still probably takes the majority of the time but there may be a small benefit.

uv pip offers a pip-compatible interface for installing packages but may be faster than using pip. Since it's written in rust perhaps it could be bundled into maturin directly as a library?

[messense]

I'm in favor of add support for it, but I don't want to bundle/link it into maturin directly given that it's not stable yet (we don't want to release a new version of maturin everytime uv makes a new release) and will increase compile time and binary size for maturin.

Call uv pip in subprocess should be fine.

cc @konstin

[konstin]

A --uv option would be great! As messense said this should use the uv pip cli, as uv doesn't expose a stable rust interface.

[dmatos2012]

from the comments it seems clear how it should look like , so I would like to give this one a try if ok with everyone :)

[messense]

@dmatos2012 Thanks!

[nleroy917]

Hey guys, I might be missing something, but this is what I see when I run maturin develop --uv:

error: unexpected argument '--uv' found

  tip: to pass '--uv' as a value, use '-- --uv'

Usage: maturin develop [OPTIONS] [ARGS]...

Then trying with maturin develop -- --uv, yeilds:

error: Unrecognized option: 'uv'

I am using the latest maturin (I believe):

Package    Version
---------- -------
maturin    1.5.1  
tomli      2.0.1  

[nleroy917]

Just now occurring to me that this might not be released yet.

[bluenote10]

Nice to have this feature implemented! @nleroy917 Looks like it is released in maturin 1.6.0

Out of curiosity: Is there also a way to configure the usage of uv via the config, so that it is not necessary to pass --uv along with each command line invocation?