Shell works, also different thing, but cannot rebuild.

nixos/configuration.nix

@@ -25,7 +25,7 @@
       outputs.overlays.addpkgs
       inputs.azos-core.overlays.qutebrowserdrm
       outputs.overlays.modifications
-      outputs.overlays.unstable-packages
+      # outputs.overlays.unstable-packages
     ];
     config = {
       allowUnfree = true;
@@ -111,5 +111,5 @@
   systemd.targets.hibernate.enable = false;
   systemd.targets.hybrid-sleep.enable = false;
 
-  system.stateVersion = "24.11"; # Did you read the comment?
+  system.stateVersion = "25.05"; # Did you read the comment?
 }

nixos/lauretta-hardware-configuration.nix

@@ -17,7 +17,7 @@
   boot.kernelModules = ["kvm-intel"];
   boot.extraModulePackages = [];
 
-  fileSystems."/" = {
+  fileSystems."/" ={
     device = "/dev/disk/by-uuid/d28f6c1d-f7ec-44a1-a59b-a598c7f136f7";
     fsType = "btrfs";
     options = ["subvol=@"];