rmbg installation fails due to requested onnxruntime version not available for MacOS 26

[riplin]

ComfyUI-Manager: EXECUTE => ['/Volumes/Stickie/ComfyUI/.venv/bin/python',

'-m', 'uv', 'pip', 'install', 'onnxruntime-gpu>=1.15.0']
[!] Using Python 3.12.11 environment at: /Volumes/Stickie/ComfyUI/.venv
[!] × No solution found when resolving dependencies:
[!] ╰─▶ Because only the following versions of onnxruntime-gpu are available:
[!] onnxruntime-gpu<=1.15.0
[!] onnxruntime-gpu==1.15.1
[!] onnxruntime-gpu==1.16.0
[!] onnxruntime-gpu==1.16.1
[!] onnxruntime-gpu==1.16.2
[!] onnxruntime-gpu==1.16.3
[!] onnxruntime-gpu==1.17.0
[!] onnxruntime-gpu==1.17.1
[!] onnxruntime-gpu==1.18.0
[!] onnxruntime-gpu==1.18.1
[!] onnxruntime-gpu==1.19.0
[!] onnxruntime-gpu==1.19.2
[!] onnxruntime-gpu==1.20.0
[!] onnxruntime-gpu==1.20.1
[!] onnxruntime-gpu==1.20.2
[!] onnxruntime-gpu==1.21.0
[!] onnxruntime-gpu==1.21.1
[!] onnxruntime-gpu==1.22.0
[!] onnxruntime-gpu==1.23.0
[!] onnxruntime-gpu==1.23.2
[!] and onnxruntime-gpu>=1.15.0,<=1.16.3 has no wheels with a
[!] matching Python ABI tag (e.g., cp312), we can conclude that
[!] onnxruntime-gpu>=1.15.0,<=1.16.3 cannot be used.
[!] And because onnxruntime-gpu>=1.17.0 has no wheels with a
[!] matching platform tag (e.g., macosx_26_0_arm64) and you require
[!] onnxruntime-gpu>=1.15.0, we can conclude that your requirements are
[!] unsatisfiable.
[!]
[!] hint: You require CPython 3.12 (cp312), but we only found wheels for
[!] onnxruntime-gpu (v1.16.3) with the following Python ABI tags: cp38,
[!] cp39, cp310, cp311
[!]
[!] hint: Wheels are available for onnxruntime-gpu (v1.23.2) on the
[!] following platforms: manylinux_2_27_x86_64, manylinux_2_28_x86_64,
[!] win_amd64
install script failed: comfyui-rmbg

[1038lab]

Thanks for the report.

This is expected on macOS:

• onnxruntime-gpu does not provide macOS wheels
• There are no compatible cp312 (Python 3.12) builds for macOS

Solution (macOS):

pip uninstall onnxruntime-gpu -y
pip install onnxruntime

ComfyUI-RMBG will run in CPU mode on macOS.
GPU acceleration is currently supported on Linux/Windows (CUDA) only.