turn off wifi powersave; add libnotify

configuration.nix

@@ -14,7 +14,7 @@
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   nix.settings.auto-optimise-store = true;
   nix.gc.automatic = true;
-  nix.gc.options = "--delete-older-than 7d";
+  nix.gc.options = "--delete-older-than 30d";
 
   services.fstrim.enable = true;
 
@@ -37,7 +37,12 @@
   # networking.hostName = "nixos"; # Define your hostname.
   # Pick only one of the below networking options.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-  networking.networkmanager.enable = true; # Easiest to use and most distros use this by default.
+  networking.networkmanager = {
+    # Easiest to use and most distros use this by default.
+    enable = true;
+    wifi.powersave = false;
+  };
+
   # services.resolved.enable = true;
   services.mullvad-vpn = {
     enable = true;
@@ -129,7 +134,6 @@
 
   services.flatpak.enable = true;
 
-
   programs.steam = {
     enable = true;
     remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
@@ -162,6 +166,7 @@
       rar
       nixpkgs-fmt
       inotify-tools
+      libnotify
     ];
 
   # Some programs need SUID wrappers, can be configured further or are