import the default.nix explicit

I have to do some research if it really gets imported automatically.

common/desktop.nix

@@ -8,7 +8,7 @@
   imports = [
     ./common.nix
     ./docker.nix
-    ./restic
+    ./restic/default.nix
     ../home-manager/desktop/services/keeweb.nix
     ../home-manager/desktop/services/telegram-desktop.nix
     ../home-manager/desktop/services/signal-desktop.nix

hardware/asus/hardware-configuration.nix

@@ -5,8 +5,8 @@
 
 {
   imports = [
-    ../nixos-hardware/common/pc/laptop
-    ../nixos-hardware/common/pc/laptop/ssd
+    ../nixos-hardware/common/pc/laptop/default.nix
+    ../nixos-hardware/common/pc/laptop/ssd/default.nix
   ];
 
   boot.initrd.availableKernelModules = [

hardware/precision/hardware-configuration.nix

@@ -5,10 +5,10 @@
 
 {
   imports = [
-    ../nixos-hardware/dell/precision/5530
+    ../nixos-hardware/dell/precision/5530/default.nix
   ];
 
-  boot.initrd.availableKernelModules = [ 
+  boot.initrd.availableKernelModules = [
     "aesni_intel"
     "ahci"
     "cryptd"