How to use different index url with pyproject.toml when using uv pip compile

[SamComber]

I'm trying to convert my Pipfile to a pyproject.toml, so that I can run:

uv pip compile pyproject.toml --generate-hashes -o requirements-lock.txt

The issue is I have a package, torch, that uses a different index in my Pipfile

[dev-packages]
torch = { index = "pytorch_cpu"}

[[source]]
url = "https://download.pytorch.org/whl/cpu"
verify_ssl = true
name = "pytorch_cpu"

How can I reproduce what my Pipfile is achieving here, and specify a different index url to install torch here? Ideally I'd like to keep this all contained within pyproject.toml - is this possible?

P.S. loving the blazing speed of uv!

[charliermarsh]

You should be able to do:

[tool.uv.pip]
extra-index-url = ["https://download.pytorch.org/whl/cpu"]

...in your pyproject.toml. We don't support assigning a package to a specific index yet but it's on the roadmap (#171).

[charliermarsh]

If you need Torch to be an optional dependency, we don't yet support development dependencies like that though it's coming soon (and already supported in preview mode but not everywhere you'd need it). So you would need to use extras, like:

[project.optional-dependencies]
dev = ["torch"]

And then uv pip compile pyproject.toml --extra dev --generate-hashes -o requirements-lock.txt.

[SamComber]

Thank you @charliermarsh, will give this a whirl.

One last blocker if you would care to help me out..

Would you know how to install your project in editable mode? Is this possible?

[dev-packages]
my_project = {editable = true, path = "."}

I've been trying

[dev-packages]
"my_project@file:///Users/sam.comber/Documents/kraken/my_project"

uv pip compile pyproject.toml --extra dev --generate-hashes -o requirements-lock.txt

But I can't see the project as editable inside the requirements-lock.txt?

uv pip install --compile-bytecode -r requirements.lock -e . works for me, but i need my project inside the lock file, otherwise uv pip sync requirements.lock will remove it and ill need to reinstall each time. Is this possible?

[patrick-kidger]

I can answer this one. You want printf '-e .' | uv pip sync - requirements.lock.

[charliermarsh]

Thanks @patrick-kidger :)