realpath: command not found

On macOS, the realpath command is not available out of the box, which can break scripts like larvatagger.jl and larvatagger.sh.

realpath can be installed with: brew install coreutils

However, at least for the larvatagger.jl open command, we would prefer to avoid any extra dependency. Other cases that require realpath should give useful pointers on erroring.

EDIT: the issue was reported by Anqi Zhou.