custom pypi index

[zen-xu]

Problem description

I use self-hosted pypi within the company, and uv can set the pypi index through environment variables.

export UV_INDEX_URL=xxxx
export UV_EXTRA_INDEX_URL=xxxx

Since pixi uses uv to install pip-related packages, I hope this can be supported.

[olivier-lacroix]

Yes, supporting index options would be great.

We would need to create the following struct to pass it to uv

pub struct IndexLocations {
    index: Option<IndexUrl>,
    extra_index: Vec<IndexUrl>,
    flat_index: Vec<FlatIndexLocation>,
    no_index: bool,
}

@tdejager , what would be your preference in terms of TOML configuration? a pypi-index-location table? or maybe a pypi-options table? as I am sure there will be more coming (e.g. build isolation, etc.)

[zen-xu]

I think it can be placed directly under the pypi table.

[gzm55]

does this related with #906?

[baszalmstra]

Also related: #588

[vigneshmanick]

also related to #1058

[tdejager]

@olivier-lacroix @gzm55 @zen-xu @vigneshmanick Would it be fine to have this on the level of project similar to channels?

[vigneshmanick]

I am fine with the project level definition, but it would also be good if it can be defined per package similar to how the conda dependencies are mentioned in the current documentation .

[dependencies]
vtk-osmesa = { version = "~=9.3", channel = "conda-forge" }

similar way for pypi should be

[pypi-dependencies]
vtk-osmesa = { version = "~=9.3", extra-index-url= "wheels.vtk.org" }

[gzm55]

@olivier-lacroix @gzm55 @zen-xu @vigneshmanick Would it be fine to have this on the level of project similar to channels?

LGTM. both index-url and extra index-urls need to be set separately.

[tdejager]

I am fine with the project level definition, but it would also be good if it can be defined per package similar to how the conda dependencies are mentioned in the current documentation .

[dependencies]
vtk-osmesa = { version = "~=9.3", channel = "conda-forge" }

similar way for pypi should be

[pypi-dependencies]
vtk-osmesa = { version = "~=9.3", extra-index-url= "wheels.vtk.org" }

That would be awesome I agree, I'm afraid that's technically more difficult because uv does not support such fine-grained selection (yet). We could do it on a feature level, like only use an extra-index-url for a specific feature.

[olivier-lacroix]

@tdejager project/ feature level settings mirroring the UV struct would be sufficient yes.

[zachcp]

Thank you @tdejager . Looking forward to this. ( its the primary blocker for uptake in my company. )

[tdejager]

I'm now just thinking, all of these optional

[project]
# other config
[pypi-options]
# When not used, will use uv default which is just pypi
primary-index = "pypi.org/simple"
extra-indices = ["foo", "bar"]
flat-indices = ["path/to/index"]

@ruben-arts and others in-thread WDYT?