How to install only the CPU version of pytorch in pdm

I've been chasing how to do this for days and Google couldn't help me. So here's me hoping I'm helping the next poor soul.

In pyproject.toml:

dependencies = [
    "torch>=2.7.1",
]

[[tool.pdm.source]]
type = "index"
url = "https://download.pytorch.org/whl/cpu/"
name = "torch"