{
  description = "alexion.dev";

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

  outputs = { nixpkgs, ... }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system;
        config.allowUnfree = true;
      };
    in
    {
      devShells.${system} = {
        test = pkgs.mkShell {
          shellHook = ''
            echo "Hello world!"
          '';
        };
      };
    };
}