$ doas emerge -p =media-libs/opencv-4.10.0::gentoo

These are the packages that would be merged, in order:

Calculating dependencies  .. .... done!
Dependency resolution took 7.80 s (backtrack: 0/20).

[ebuild   R    ] media-libs/opencv                                     [4.10.0:0/4.10.0::gentoo]     USE="contrib contribdnn cuda eigen features2d ffmpeg jpeg jpeg2k opengl openmp png qt6 tiff truetype vaapi -atlas -avif -contribcvv -contribfreetype -contribhdf (-contribovis) -contribsfm -contribxfeatures2d -cudnn -debug -dnnsamples -doc -examples -gdal -gflags -glog -gphoto2 -gstreamer -gtk3 -ieee1394 -jasper -java -lapack -mkl -non-free -opencl -opencvapps -openexr -python -quirc -tbb -tesseract -test -testprograms -v4l -vtk -webp -xine" ABI_X86="(64) -32 (-x32)" CPU_FLAGS_X86="avx avx2 avx512_bitalg avx512_vbmi2 avx512_vnni avx512_vpopcntdq avx512bw avx512cd avx512dq avx512f avx512ifma avx512vbmi avx512vl f16c fma3 popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3 -avx512_4fmaps -avx512_4vnniw -avx512er -avx512pf" PYTHON_TARGETS="python3_12 -python3_10 -python3_11 -python3_13" VIDEO_CARDS="-intel" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB