uv: Cannot install the CPU version of torch

I tried to install the CPU version of torch but could not.

uv pip install torch==2.1.0+cpu --find-links https://download.pytorch.org/whl/torch_stable.html
# and next command gives the same result.
uv pip install torch==2.1.0 --index-url https://download.pytorch.org/whl/cpu

  × No solution found when resolving dependencies:
  ╰─▶ Because there is no version of torch==2.1.0+cpu and you require torch==2.1.0+cpu, we can conclude that the requirements are unsatisfiable.

uv version: v0.1.2 Python 3.11.7 Ubuntu 20.4 X86_64 Architecture

---

By the way, the install of the GPU version of torch is successful.

uv pip install torch==2.1.0
# success