version check with suffix incorrect?

Description

My requirements.txt and req_torch.txt look like:

$ cat requirements.txt
-c req_torch.txt

# Restore default index URL.
-i https://pypi.org/simple
hydra-core==1.2.0
pytorch-lightning==1.7.7
fairscale==0.4.12

cat req_torch.txt
-i https://download.pytorch.org/whl/torch_stable.html
torch==1.10.2+cu113

But running pip install -r requirements.txt results in this error:

ERROR: Cannot install -r requirements.txt (line 6) because these package versions have conflicting dependencies.

The conflict is caused by:
    pytorch-lightning 1.7.7 depends on torch>=1.9.*
    The user requested (constraint) torch==1.10.2+cu113

Expected behavior

It seems that the above versions should work and error is due to the extra suffix of “+cu113”?

pip version

22.3

Python version

3.9

OS

linux

How to Reproduce

try pip install with above requirements.txt and req_torch.txt.

Output

No response

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[uranusjr]

This is caused by the version range specification >=1.9.*, which is undefined according to the specification. I mentioned this a while ago elsewhere but forgot how that discussion went. The * whildcard is only ever intended for == (give me anything that starts with 1.9.); for >= the correct specifier is >=1.9 (give me 1.9 or later). Not sure which is the correct semantic, you’ll need to work this out with the package author.

[min-xu-ai]

@pfmoore, thanks for the help! Yes, indeed after using --find-links, it works!