asdf plugin-add nodejs asdf list-all nodejs bash ~/.asdf/plugins/nodejs/bin/import-release-team-keyring asdf install nodejs 12.16.3 asdf global nodejs 12.16.3 npm install -g yarn yarn global add bs-platform

apt install bubblewrap mercurial darcs sh <(curl -sL https://raw.githubusercontent.com/ocaml/opam/master/shell/install.sh) opam init