fix(cv): fully purge base OpenCV before reinstalling opencv-python#42
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The first attempt (uninstall + force-reinstall) failed the build-time assert on arm64: the nvcr `opencv` and the `opencv-python` wheel share the same site-packages cv2/ directory, so a plain uninstall left residual files that kept shadowing the wheel — `import cv2` still resolved to the headless build (FFMPEG: NO). Confirmed on the real arm64 node: a clean opencv-python 4.13 install reports FFMPEG: YES (the aarch64 wheel does ship FFmpeg), and site-packages held both opencv-4.10.0.dist-info and opencv_python-4.11.0.86.dist-info pointing at one cv2/ dir. Fix: uninstall every opencv variant, then rm -rf the leftover cv2/ dir, opencv*.dist-info, and opencv_python.libs before a clean opencv-python install. Works on amd64 and arm64; the FFmpeg assert still guards regressions. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Follow-up to #41, which failed the base build on arm64.
Why #41 failed
The nvcr
opencvpackage and theopencv-pythonwheel install into the samesite-packages/cv2/directory. A plainpip uninstall+ reinstall left residual files, soimport cv2still loaded the headless build (FFMPEG: NO) and the build-time assert correctly failed.Confirmed on the real arm64 (spark) node: a clean
opencv-python4.13 install reportsFFMPEG: YES— the aarch64 wheel does ship FFmpeg. The site-packages held bothopencv-4.10.0.dist-infoandopencv_python-4.11.0.86.dist-infoover onecv2/dir.Fix
Uninstall every opencv variant, then
rm -rfthe leftovercv2/,opencv*.dist-info, andopencv_python.libs, then installopencv-pythonclean. Arch-agnostic; the FFmpeg assert still guards against regressions.🤖 Generated with Claude Code