i need butterfly's help ;-;

hosts/arcturus/default.nix

@@ -34,24 +34,25 @@
     };
   };
 
+  systemd.services.systemd-networkd.environment = {
+    SYSTEMD_LOG_LEVEL = "debug";
+  };
+
   systemd.network = {
     enable = true;
 
-    netdevs = {
-      "10-bond0" = {
-        netdevConfig = {
-          Kind = "bond";
-          Name = "bond0";
-        };
-        bondConfig = {
-          Mode = "802.3ad";
-          TransmitHashPolicy = "layer3+4";
-          LACPTransmitRate = "fast";
-          MIIMonitorSec = "100ms";
-        };
+    netdevs."10-bond0" = {
+      netdevConfig = {
+        Name = "bond0";
+        Kind = "bond";
+      };
+      bondConfig = {
+        Mode = "802.3ad";
+        TransmitHashPolicy = "layer3+4";
+        LACPTransmitRate = "fast";
+        MIIMonitorSec = "100ms";
       };
     };
-
     networks = {
       "30-eno1" = {
         matchConfig.Name = "eno1";
@@ -68,7 +69,25 @@
         };
         networkConfig.LinkLocalAddressing = "no";
         networkConfig.DHCP = "yes";
-        vlan = [ "vlan1" ];
+      };
+    };
+
+    netdevs."20-br0" = {
+      netdevConfig = {
+        Name = "br0";
+        Kind = "bridge";
+      };
+    };
+    networks = {
+      "50-vms" = {
+        matchConfig.Name = ["bond0" "vm-*"];
+        networkConfig = {
+          Bridge = "br0";
+        };
+      };
+      "50-vms-bridge" = {
+        matchConfig.Name = "br0";
+        linkConfig.RequiredForOnline = "routable";
       };
     };
   };

snow.nix

@@ -47,9 +47,19 @@ cerulean.mkNexus ./. (self: {
 
                   networking.hostName = "home-assistant";
 
+                  boot.kernelParams = ["console=ttyS0" "console=ttyS1" "8250.nr_uarts=2"];
+                  systemd.services."serial-getty@ttyS1".enable = true;
+
                   microvm = {
                     hypervisor = "qemu";
 
+                    # needed to get interface working
+                    qemu.extraArgs = [
+                      "-monitor" "unix:/var/lib/microvms/home-assistant/monitor.sock,server,nowait"
+                      "-chardev" "socket,id=serial1,path=/var/lib/microvms/home-assistant/serial.sock,server=on,wait=off"
+                      "-serial" "chardev:serial1"
+                    ];
+
                     # memory cannot be 2GB so i doubled it and used 4GB:
                     # https://github.com/microvm-nix/microvm.nix/issues/171
                     # TODO: can be fixed by turning off acpi in qemu
@@ -73,15 +83,15 @@ cerulean.mkNexus ./. (self: {
                     ];
                   };
 
-                  networking = {
-                    interfaces.eth0 = {
-                      useDHCP = false;
-                      ipv4.addresses = [
-                        {
-                          address = "10.16.1.127";
-                          prefixLength = 24;
-                        }
-                      ];
+                  systemd.network.enable = true;
+                  systemd.network.networks."20-lan" = {
+                    matchConfig.Type = "ether";
+                    networkConfig = {
+                      Address = ["10.16.1.127"];
+                      Gateway = "10.16.1.1";
+                      DNS = ["10.16.1.1"];
+                      IPv6AcceptRA = true;
+                      DHCP = "yes";
                     };
                   };
                 };

vms/home-assistant/default.nix

@@ -2,11 +2,19 @@
 {
   services.home-assistant = {
     enable = true;
-    configDir = "/var/lib/hass";
+    configDir = "/var/lib/microvms/home-assistant";
     # disables config generation, i don't wanna configure home assistant
     # through nix at the moment
     config = null;
   };
 
+  users.users.nixos = {
+    isNormalUser = true;
+    uid = 1000;
+    extraGroups = ["wheel"];
+
+    hashedPassword = "$2b$05$94fPE/15g7ix7glKOaN0AeVMpitMivtQtcFL.aZIouQngOJ6nGMSC";
+  };
+
   system.stateVersion = "25.11";
 }