Refactor things and make zippy an user node.

common/dev-node.nix

@@ -0,0 +1,11 @@
+{ pkgs, inputs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    wget
+    deploy-rs
+    docker
+    jq
+  ];
+
+  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+}

common/nomad-client.nix

@@ -0,0 +1,10 @@
+{ pkgs, ... }:
+{
+  services.nomad.enable = false;
+
+  environment.systemPackages = with pkgs; [
+    nomad
+    wander
+    damon
+  ];
+}