system: add config for networking and hardware

modules/system/os/networking/module.nix

@@ -0,0 +1,21 @@
+{config, ...}: let
+  inherit (config.modules.other.system) username;
+in {
+  imports = [
+    ./networkmanager.nix
+  ];
+  networking = {
+    enableIPv6 = true;
+    nameservers = [
+      # quad9 DNS
+      "9.9.9.9"
+      "2620::fe::fe"
+    ];
+  };
+  services.resolved = {
+    enable = true;
+    # quad9 dns
+    fallbackDns = ["9.9.9.9" "2620::fe::fe"];
+  };
+  users.users.${username}.extraGroups = ["networkmanager"];
+}

modules/system/os/networking/networkmanager.nix

@@ -0,0 +1,26 @@
+{lib, ...}: let
+  inherit (lib) mkForce;
+in {
+  networking.networkmanager = {
+    enable = true;
+    # Removes about 2GB of stuff we do no need.
+    plugins = mkForce [];
+
+    dns = "systemd-resolved";
+    unmanaged = [
+      # DO NOT manage my docker containers, thank you.
+      "interface-name:docker*"
+    ];
+    wifi = {
+      # Generate a randomized value upon each connect
+      macAdress = "random";
+
+      # Enable Wi-Fi power saving
+      powersave = true;
+
+      # Backend is either wpa_supplicant or iwd,
+      # we use wpa_supplicant.
+      backend = "wpa_supplicant";
+    };
+  };
+}