Fish doesn't have a "PS1" environment variable which we can just change.
If a user has a user-defined fish prompt it will be located at ~/.config/fish/functions/fish_prompt.fish
- Either modify the user-defined prompt if there is one
- Or create a simple bash-like prompt
First essentially looks like (I have a user-defined prompt):
Second looks like (If a user does not have a user-defined prompt):
