https://root.cern/install/

https://iscinumpy.gitlab.io/post/root-conda/

binary
https://root.cern.ch/download/cling/

snap
https://snapcraft.io/install/root-framework/ubuntu
    https://root.cern/install/
    https://root.cern/blog/snap-announcement/
    https://root-forum.cern.ch/t/a-snap-package-for-root/42636
    sudo snap install root-framework
    root

build from source
https://root.cern/cling/cling_build_instructions/