Make nushell default shell (programs.nushell.enable)?

[jasonboukheir]

I'm a nix noob, and I'm wanting to set my default shell to nushell. It seems like to change the default shell of the system, one needs to enable it at the system level configuration. However, there is no programs.nushell.enable option in nix-darwin.

I can see where the option is defined here for zsh, and I'd love to just make a custom module that does the same thing. However, since I'm a nix noob, I'm not sure where to put my custom module, if it's even needed, or the best way to go about doing that.

Looking for a little help here