Some of my CLI environment set (before I forget)

 First, integrate Zellij into the default shell (https://zellij.dev/documentation/integration) such that as soon as a terminal program (alacritty in my case) is started, Zellij is started.

Second, tweak the Zellij configuration file to make the Nushell the default shell. This way, as soon as Zellij is started, Nu is also started.

Install Starship and integrate it with Nushell (https://starship.rs/guide/). This way, as soon as Nu is started, Starship becomes the default prompt. An example can be found here (https://starship.rs/config/)

Install Yazi and integrate it with Nu, as described here (https://yazi-rs.github.io/docs/quick-start).