avail_wheels errors out when when requirements are specified with VCS

[vandalt]

Hi!

When trying to install the jwst package, I generated a requirements.txt from its pyproject.toml with a tiny script I wrote.

The resulting requirements.txt (pasted in full below, click to unfold) includes git dependencies such as gwcs @ git+https://github.com/spacetelescope/gwcs.git@master. These dependencies cause avail_wheels to error out, both when using avail_wheels -r requirements.txt or avail_wheels "gwcs @ git+https://github.com/spacetelescope/gwcs.git@master". The error is below. It would be great if these cases could be handled, either by showing the available wheel versions or by showing them in --not-available.

Thanks!

The full error:

Traceback (most recent call last):
  File "/cvmfs/soft.computecanada.ca/custom/bin/avail_wheels", line 393, in make_requirement
    return requirements.Requirement(r.partition('+')[0])
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/cvmfs/soft.computecanada.ca/custom/python/envs/avail_wheels/wild_requirements.py", line 119, in __init__
    raise InvalidRequirement(f"Invalid URL: {req.url}")
wild_requirements.InvalidRequirement: Invalid URL: git

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/cvmfs/soft.computecanada.ca/custom/bin/avail_wheels", line 509, in <module>
    main()
  File "/cvmfs/soft.computecanada.ca/custom/bin/avail_wheels", line 479, in main
    reqs = get_requirements_set(args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/cvmfs/soft.computecanada.ca/custom/bin/avail_wheels", line 362, in get_requirements_set
    r = make_requirement(freq.requirement)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/cvmfs/soft.computecanada.ca/custom/bin/avail_wheels", line 395, in make_requirement
    raise argparse.ArgumentTypeError(f"Invalid requirement: {r!r}.")
argparse.ArgumentTypeError: Invalid requirement: 'gwcs @ git+https://github.com/spacetelescope/gwcs.git@master'.

Full requirements.txt

asdf>=4.2,<6
astropy>=6.1
BayesicFitting>=3.2.2
crds>=12.0.3
drizzle>=2.1.1,<2.2.0
gwcs @ git+https://github.com/spacetelescope/gwcs.git@master
numpy>=1.25
photutils>=2.1.0
pyparsing>=2.2.1
requests>=2.31
scikit-image>=0.20.0
scipy>=1.14.1
spherical-geometry>=1.3
stdatamodels @ git+https://github.com/spacetelescope/stdatamodels.git@main
stcal @ git+https://github.com/spacetelescope/stcal.git@main
stpipe @ git+https://github.com/spacetelescope/stpipe.git@main
synphot>=1.3
tweakwcs>=0.8.8
packaging>20.0
importlib-metadata>=4.11.4
jsonschema>=4.8%

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