Fish O' Plenty
Fish O' Plenty is a script to make simple fish shell themes.
Inner Workings
FOP consists of "parts" which make up the fish theme. Parts like the username, the "@" sign, even syntax highligting. The user can customize these parts and change their color and visibility. Those parts are iterated trough and added to the "themecode": a variable that keeps the fish script for the theme. you can even make your own parts, as the code is available under the MIT license. You can even suggest changes to the repo and add your own objects to the offical repo.
Can I package this as a snap, flatpak or dev and distribute it?
Sure! This is all under the MIT license, which allows you to distribute this software as a binary.