AS of QIIME II 2020.8
sudo dnf install conda wget
wget https://data.qiime2.org/distro/core/qiime2-2020.11-py36-linux-conda.yml
conda env create -n qiime2-2020.11 --file qiime2-2020.8-py36-linux-conda.yml
rm ./qiime2-2020.8-py36-linux-conda.yml
# activate the environment
conda activate qiime2-2020.8
# test intallation
qiime --help