A work in progress. Forever.
$ git clone --recursive https://github.com/Julian/dotfiles ~/.dotfiles
$ mkdir ~/Development
$ cd ~/.dotfiles && ./install
$ brew analytics off
$ mkdir ~/.irssi/certs
$ openssl req -x509 -new -newkey ed25519 -sha256 -nodes -out libera.pem -keyout libera.pem
/msg nickserv cert add
it as per the Libera instructions.