diff --git a/nix-system-configs/modules/system/build_machine.nix b/nix-system-configs/modules/system/build_machine.nix
index b7828e4..f3e754d 100644
--- a/nix-system-configs/modules/system/build_machine.nix
+++ b/nix-system-configs/modules/system/build_machine.nix
@@ -5,6 +5,15 @@
   ...
 }: let
   choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+
+  # Dummy filesystem config for dry-run evaluation
+  dummyFileSystems = {
+    fileSystems."/" = {
+      device = "/dev/disk/by-label/nixos";
+      fsType = "ext4";
+    };
+  };
+
 in {
   options.local = {
     hostname = lib.mkOption {
@@ -35,7 +44,8 @@ in {
     (choose [ ./modules/lix-default.nix ../lix-default.nix ])
     (choose [ ./modules/secrets-config/sops-build-machine.nix ../secrets-config/sops-build-machine.nix ])
     ## TODO: Make this more elegant and less risky for unexpected errors happening.
-  ] ++ lib.optional (builtins.pathExists ./hardware-configuration.nix) ./hardware-configuration.nix;
+  ] ++ lib.optional (builtins.pathExists ./hardware-configuration.nix) ./hardware-configuration.nix
+      ++ lib.optional (!builtins.pathExists ./hardware-configuration.nix) dummyFileSystems;
 
   config = {
     # Local metadata