nix everywhere! (or at least my laptop)

pruned Brewfile to match... more to do still

darwin/configuration.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [ <home-manager/nix-darwin> ];
+
+  # List packages installed in system profile. To search by name, run:
+  # $ nix-env -qaP | grep wget
+  environment.systemPackages = with pkgs; [ ];
+
+  # Use a custom configuration.nix location.
+  # $ darwin-rebuild switch -I darwin-config=$HOME/.config/nixpkgs/darwin/configuration.nix
+  # environment.darwinConfig = "$HOME/.config/nixpkgs/darwin/configuration.nix";
+
+  # Auto upgrade nix package and the daemon service.
+  services.nix-daemon.enable = true;
+  nix.package = pkgs.nix;
+
+  # Create /etc/bashrc that loads the nix-darwin environment.
+  programs.zsh.enable = true;  # default shell on catalina
+  # programs.fish.enable = true;
+
+  users.users.walkah = {
+    home = "/Users/walkah";
+    shell = pkgs.zsh;
+  };
+  home-manager.users.walkah = import ../home.nix;
+
+  services.lorri.enable = true;
+
+  system = {
+    defaults = {
+      dock = {
+        autohide = true;
+        orientation = "left";
+      };
+    };
+  };
+
+  # Used for backwards compatibility, please read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 4;
+}