Cannot pip install OpenCV 4.5.4.* on MacOS Mojave

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1

Environment

  • MacOS Mojave
  • Python 3.9.13
  • OpenCV 4.5.4*
  • installer

Command

$ pip install opencv-python==4.5.4.56

Message

        File "/private/var/folders/64/kzf5_d7n3wlcl3r3yzp770g00000gn/T/pip-build-env-jcn8ws74/overlay/lib/python3.9/site-packages/skbuild/setuptools_wrap.py", line 676, in setup
          _classify_installed_files(
        File "<string>", line 381, in _classify_installed_files_override
      FileNotFoundError: [Errno 2] No such file or directory: 'scripts/__init__.py'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects

I tried to install 4.5.4.58, 4.5.4.60, and 4.6.0.66, but failed with the same error.

Any help will be appreciated!

2

you don’t have to build.

either upgrade your OS, or use an earlier version of opencv, because there are packages that should work for your OS (10.14):

opencv v4.5.1: opencv-python · PyPI

that’s the latest opencv with packages that don’t require 10.15 or later.

if you want to build OpenCV, you build OpenCV. that contains python bindings. the opencv-python build stuff is for the self-contained package, which you don’t need. just build opencv itself.

3

I had exactly the same problem. Don’t know if it will apply to your case, but I tried installing open-cv-headless with conda and it worked for me !

conda install -c fastai opencv-python-headless