fix: use pkgs from source

[ldicarlo]

fix #14

[NotAShelf]

This effectively reverts a chunk of #3, and I'm not sure if this is the correct pattern. Why not just get the package from self again?

P.S: please undo the formatting changes. This project uses Alejandra per nix fmt.

[ldicarlo]

So when doing the main way in the nixosModules, when it builds the module on my computer, it uses the nixpkgs of my computer. Since my nixos uses nixos-stable it's what get used to generate the package.

[ldicarlo]

I ran nix fmt and some changes appeared, maybe it has not been ran on main?

[NotAShelf]

The default formatter in flake.nix is alejandra as of beecb06 or the 2.0.3 tag.

[ldicarlo]

Still, I tried to unformat files, when I run nix fmt it gives me this result. I'll leave it as is if you want.
If you don't, no problem, it's nothing, you can close it.