torchvision conda package missing requests dependency

🐛 Describe the bug

torchvision depends on requests, but it is not specified as conda package dependency, which results in the following failures:

% python
Python 3.8.11 (default, Aug  6 2021, 08:56:27) 
[Clang 10.0.0 ] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from torchvision import datasets
>>> calldetch_ds = datasets.Caltech101("datasets", download=True)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/nshulga/miniconda3/envs/py_38/lib/python3.8/site-packages/torchvision/datasets/caltech.py", line 52, in __init__
    self.download()
  File "/Users/nshulga/miniconda3/envs/py_38/lib/python3.8/site-packages/torchvision/datasets/caltech.py", line 124, in download
    download_and_extract_archive(
  File "/Users/nshulga/miniconda3/envs/py_38/lib/python3.8/site-packages/torchvision/datasets/utils.py", line 427, in download_and_extract_archive
    download_url(url, download_root, filename, md5)
  File "/Users/nshulga/miniconda3/envs/py_38/lib/python3.8/site-packages/torchvision/datasets/utils.py", line 135, in download_url
    return download_file_from_google_drive(file_id, root, filename, md5)
  File "/Users/nshulga/miniconda3/envs/py_38/lib/python3.8/site-packages/torchvision/datasets/utils.py", line 204, in download_file_from_google_drive
    import requests
ModuleNotFoundError: No module named 'requests'

Versions

0.11.1 on MacOS

[datumbox]

@pmeier Would you be interested in sending a PR that fixes this? Perhaps taking the time to update the CI scripts from installing the dependencies separately?

[NicolasHug]

I would go with option 2 as well