SAM2 is unable to find packages installed on my system.

[evertvorster]

Hi there!

Hopefully this is an easy one. ;)

When I run python -m build --wheel --no-isolation in the source directory, I get the following output:

==> Starting build()...
Building phase
* Getting build dependencies for wheel...
running egg_info
writing SAM_2.egg-info/PKG-INFO
writing dependency_links to SAM_2.egg-info/dependency_links.txt
writing requirements to SAM_2.egg-info/requires.txt
writing top-level names to SAM_2.egg-info/top_level.txt
reading manifest template 'MANIFEST.in'
adding license file 'LICENSE'
adding license file 'LICENSE_cctorch'
writing manifest file 'SAM_2.egg-info/SOURCES.txt'

ERROR Missing dependencies:
        torch>=2.5.1
        sympy==1.13.1
==> ERROR: A failure occurred in build().
    Aborting...

This would indicate to me that I have a missing torch and sympy. However, both of these are installed on the system, and of the proper version.

sympy first:

[evert@Evert python-sam2-git]$ yay -Qi python-sympy 
Name            : python-sympy
Version         : 1.13.3-2
Description     : Symbolic manipulation package (Computer Algebra System), written in pure Python
Architecture    : any
URL             : https://sympy.org/en/index.html
Licenses        : BSD
Groups          : None
Provides        : None
Depends On      : python-mpmath
Optional Deps   : ipython: user friendly interface for isympy
                  python-symengine: optimized backend, set USE_SYMENGINE=1 to use
Required By     : python-pytorch-cuda  python-torchvision-cuda
Optional For    : python-fonttools  python-networkx
Conflicts With  : None
Replaces        : None
Installed Size  : 93.30 MiB
Packager        : Jelle van der Waa <[email protected]>
Build Date      : 2024-11-16T22:45:55 CAT
Install Date    : 2024-12-22T18:02:34 CAT
Install Reason  : Installed as a dependency for another package
Install Script  : No
Validated By    : Signature

It seems to be installed in /usr/lib/python3.13/site-packages:

[evert@Evert python-sam2-git]$ ls /usr/lib/python3.13/site-packages/ | grep sympy
isympy.py
sympy
sympy-1.13.3.dist-info
[evert@Evert python-sam2-git]$ 

torch next:

[evert@Evert python-sam2-git]$ yay -Qi python-pytorch-cuda 
Name            : python-pytorch-cuda
Version         : 2.5.1-7
Description     : Tensors and Dynamic neural networks in Python with strong GPU acceleration (with
                  CUDA)
Architecture    : x86_64
URL             : https://pytorch.org
Licenses        : BSD
Groups          : None
Provides        : python-pytorch=2.5.1
Depends On      : google-glog  gflags  opencv  openmp  openmpi  pybind11  python  python-yaml
                  libuv  python-numpy  python-sympy  protobuf  ffmpeg  qt6-base  eigen
                  intel-oneapi-mkl  python-typing_extensions  numactl  python-jinja
                  python-networkx  python-filelock  cuda  nccl  cudnn  magma-cuda  onednn
Optional Deps   : None
Required By     : python-torchvision-cuda  whisper-git
Optional For    : None
Conflicts With  : python-pytorch
Replaces        : None
Installed Size  : 2.08 GiB
Packager        : Robin Candau <[email protected]>
Build Date      : 2024-12-19T19:16:58 CAT
Install Date    : 2025-01-02T07:57:47 CAT
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature

This package is also installed in /usr/lib/python3.13/site-packages:

[evert@Evert python-sam2-git]$ ls /usr/lib/python3.13/site-packages/ | grep torch
functorch
torch
torch-2.5.1-py3.13.egg-info
torchgen
torchvision
torchvision-0.20.1a0-py3.13.egg-info

What am I doing wrong here? Are there any switches that I can set so that sam2 finds the installed packages?