I am trying to install Kwant on my Mac High Sierra 10.13.4. I am facing the following error after brew tap homebrew/science command: 

brew tap homebrew/science

Updating Homebrew...

==> Auto-updated Homebrew!

Updated 1 tap (homebrew/core).

==> Updated Formulae

aptly               gtksourceview@4     nano                rocksdb

armadillo           jhiccup             node-build          solr

dash                kubernetes-helm     osquery             spigot

dscanner            libu2f-host         pam-u2f             spring-roo

fabric              maxwell             postgrest

fn                  mercurial           pound

grpc                mpc                 proguard

Error: homebrew/science was deprecated. This tap is now empty as all its formulae were migrated.

Could any one of you please help me with this. 

Thank you. 

Best regards,

Girish