asdf plugin add ya https://github.com/yhakbar/asdf-ya.git
asdf install ya latest
rtx plugin add ya https://github.com/yhakbar/asdf-ya.git
rtx install ya latest
brew tap yhakbar/ya
brew install ya
git clone https://github.com/yhakbar/ya.git
cd ya
cargo install --features yadayada --path .
cargo install --path .
Go here and download the appropriate executable(s) for your platform.
I recommend reading this for more information on how to install shell completions.