Nix flakes explained

Enabling flakes: https://nixos.wiki/wiki/Flakes - commands are here

Creating a flake: $ nix flake init

Updating a flake: $ nix flake update

Flake:

{
  description = "my epic vims collection";

  inputs = {
      nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  };

  outputs = { self, nixpkgs }:
  let
      system = "x86_64-linux";
      pkgs = nixpkgs.legacyPackages.${system};
  in
  {
    bob =
      pkgs.mkShell
        {
          buildInputs = [
            pkgs.neovim
            pkgs.vim
          ];

          shellHook = ''
            echo "hello mom"
          '';
        };
  };
}

(yes, I know I could push it to github, but I'm extra lazy today) ... https://www.youtube.com/watch?v=S3VBi6kHw5c