refactor(nix): Seperate home manager stuff from nix-darwin

.config/nix/users/default.nix

@@ -0,0 +1,30 @@
+{ inputs, nixpkgs, home-manager, vars, ... }:
+
+let
+  mkSystem = import ../lib/mkSystem.nix;
+in
+{
+  # Host list
+  # Build with: `home-manager build --flake .#<user>@<host>`
+  # e.g. `home-manager build --flake .#"ziro@ThiccBook-Pro"`
+  # Switch to current build: `home-manager switch --flake .#<user>@<host>`
+  #
+  # If you're feeling lucky `home-manager build --flake .` or
+  # `home-manager switch --flake .` should be enough, since home-manager will
+  # search the correct <user>@<host> on its own.
+  #
+  # You may need to run `scutil --set HostName <host>` if home-manager can't
+  # find your <user>@<host>.
+
+  "ziro@ThiccBook-Pro" =
+    let
+      inherit (mkSystem "x86_64-darwin" nixpkgs) system pkgs;
+    in
+    home-manager.lib.homeManagerConfiguration {
+      inherit pkgs;
+      extraSpecialArgs = { inherit inputs pkgs home-manager vars; };
+      modules = [
+        ./ziro.nix
+      ];
+    };
+}