Unable to build torchvision on Windows (installed torch from source and it is running)

❓ Questions and Help

I have installed torch successfully in my PC via source, but I am facing this issue while installing the torchvison. I don’t think I can install torchvision via pip as it is re-downloading the torch.

Please help me to install it

TIA i used python setup.py install

Building wheel torchvision-0.9.0a0+01dfa8e
PNG found: True
Running build on conda-build: False
Running build on conda: True
JPEG found: True
Building torchvision with JPEG image support
FFmpeg found: True
Traceback (most recent call last):
  File "C:\Users\dhawals\repos\build_binaries\vision\setup.py", line 472, in <module>
    ext_modules=get_extensions(),
  File "C:\Users\dhawals\repos\build_binaries\vision\setup.py", line 352, in get_extensions
    platform_tag = subprocess.run(
  File "C:\Users\dhawals\miniconda3\lib\subprocess.py", line 501, in run
    with Popen(*popenargs, **kwargs) as process:
  File "C:\Users\dhawals\miniconda3\lib\subprocess.py", line 947, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\dhawals\miniconda3\lib\subprocess.py", line 1356, in _execute_child
    args = list2cmdline(args)
  File "C:\Users\dhawals\miniconda3\lib\subprocess.py", line 561, in list2cmdline
    for arg in map(os.fsdecode, seq):
  File "C:\Users\dhawals\miniconda3\lib\os.py", line 822, in fsdecode
    filename = fspath(filename)  # Does type-checking of `filename`.
TypeError: expected str, bytes or os.PathLike object, not NoneType

[datumbox]

Awesome, thanks for confirming.

The size_t is an unrelated headache as you said. You can read more about it here https://github.com/pytorch/vision/pull/3777#issuecomment-832656199. The fix that you quoted is a workaround and we still look for a better fix.

The version should not be an issue. Just make sure you pull the latest master and install the pytorch from nightly as described in our contribution guide.

[fmassa]

@andfoy PyTorch only builds CI with MSVC, so we should probably keep MSVC as well.

I think we might have some parts in our setup.py for video which might not work well on Windows, we should double-check that