Perhaps unrelated but install fails completely.
Aanconda Python 3.7 Fedora 31 with CUDA 10.2
with libcudnn7 libcudnn7-devel libnccl libnccl-devel
installed from official repo:
https://developer.download.nvidia.com/compute/machine-learning/repos/rhel7/x86_64/nvidia-machine-learning-repo-rhel7-1.0.0-1.x86_64.rpm 31
as per:
https://rpmfusion.org/Howto/CUDA 19