Bug: extra indexes break uv add, uv remove without manual intervention

[Mateuscvieira]

The problem

I am currently working with a package that is only available in an external index. Here are the commands to build my project:

uv init
uv add "ceic-api-client<=2.7" --extra-index-url https://downloads.ceicdata.com/python

Now, let's say I want to add another package, like pandas:

uv add pandas

Output:

No solution found when resolving dependencies: 
Because ceic-api-client was not found in the package registry and your project depends on ceic-api-client<=2.7, we can conclude that your project's requirements are unsatisfiable

The same happens if I add Pandas first, then my package, then try to remove Pandas. It's funny because I can run uv sync, uv run, etc. just fine, and I checked the lockfile and the external sources are there:

[[package]]
name = "ceic-api-client"
version = "2.6.1.148"
source = { registry = "https://downloads.ceicdata.com/python" }
dependencies = [
    { name = "certifi" },
    { name = "python-dateutil" },
    { name = "six" },
    { name = "urllib3" },
]
sdist = { url = "https://downloads.ceicdata.com/python/ceic-api-client/ceic_api_client-2.6.1.148.tar.gz" }

What solves it

I have noticed that manually adding the sources to pyproject.toml fixes the issue:

[tool.uv]
extra-index-url = ["https://downloads.ceicdata.com/python"]

I think this should be added automatically, as it already is to the lockfile.

Info

I'm running uv 0.4.11 on Windows 10

[zanieb]

Thanks for the report! Adding indexes during uv add just isn't implemented yet — but we're working on it.

[zanieb]

I think we add the index if you use the new --index flag instead.