This zsh plugin installs GHCup if not already installed,
defaulting to $HOME/.ghcup or $GHCUP_ROOT if
specified.
After ensuring that ghcup is installed, it then initializes ghcup for use in the current shell.
I created this because I couldn't find another existing plugin for this, and I want to reduce the amount of work to install a zsh environment on a new system.
Use your favorite zsh plugin manager to install this plugin (e.g. zplug).