Hi,
Please noticed that the package included in the JetPack is built with python 3.6.
More, it requires our OTA feature to install rather than the pip3 tool.
Ex.
$ echo "deb https://repo.download.nvidia.com/jetson/t194 r32.7 main" >> /etc/apt/sources.list.d/nvidia-l4t-apt-source.list
$ sudo apt update
$ sudo apt install nvidia-opencv
Another alternative is to allow the global library to be seen within the environment.
Would you mind checking if the below workaround can meet your requirement or not?
Thanks.