docs: absolute path to a conda package in pixi add

[benmoss]

Description

pixi add can take an absolute path to a .conda or .tar.bz2 file to support installing a built package without needing to add it to a channel. This has come up before on the Discord server but it seems it's not commonly known behavior, probably because it's not documented!

How Has This Been Tested?

N/A

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  • I have tested any AI-generated content in my PR.
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Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added sufficient tests to cover my changes.
• I have verified that changes that would impact the JSON schema have been made in schema/model.py.

[benmoss]

The numbering in the docs/reference/cli/pixi/add_extender file is really annoying btw

[lucascolley]

The numbering in the docs/reference/cli/pixi/add_extender file is really annoying btw

agreed

[lucascolley]

Thanks @benmoss !

Could we add something to https://pixi.prefix.dev/latest/reference/cli/pixi/add/#description too? In particular I think the following sentence should be broadened:

The dependencies should be defined as MatchSpec for conda package, or a PyPI requirement for the --pypi dependencies.

[lucascolley]

thanks a lot @benmoss!