feat: update nix config module

modules/nixos/common/gc.nix

@@ -1,12 +0,0 @@
-{ lib, config, ... }:
-{
-  options.swarselsystems.modules.gc = lib.mkEnableOption "garbage collection config";
-  config = lib.mkIf config.swarselsystems.modules.gc {
-    nix.gc = {
-      automatic = true;
-      randomizedDelaySec = "14m";
-      dates = "weekly";
-      options = "--delete-older-than 10d";
-    };
-  };
-}

modules/nixos/common/settings.nix

@@ -1,4 +1,4 @@
-{ lib, config, outputs, inputs, ... }:
+{ lib, pkgs, config, outputs, inputs, ... }:
 {
   options.swarselsystems.modules.general = lib.mkEnableOption "general nix settings";
   config = lib.mkIf config.swarselsystems.modules.general {
@@ -9,6 +9,11 @@
       };
     };
 
+    environment.etc."nixos/configuration.nix".source = pkgs.writeText "configuration.nix" ''
+      assert builtins.trace "This location is not used. The config is found in ${config.swarselsystems.flakePath}!" false;
+      { }
+    '';
+
     nix =
       let
         flakeInputs = lib.filterAttrs (_: lib.isType "flake") inputs;
@@ -35,11 +40,24 @@
           max-jobs = 1;
           use-cgroups = lib.mkIf config.swarselsystems.isLinux true;
         };
+        gc = {
+          automatic = true;
+          dates = "weekly";
+          options = "--delete-older-than 10d";
+        };
+        optimise = {
+          automatic = true;
+          dates = "weekly";
+        };
         channel.enable = false;
-        registry = lib.mapAttrs (_: flake: { inherit flake; }) flakeInputs;
+        registry = rec {
+          nixpkgs.flake = inputs.nixpkgs;
+          p = nixpkgs;
+        };
         nixPath = lib.mapAttrsToList (n: _: "${n}=flake:${n}") flakeInputs;
       };
 
+    services.dbus.implementation = "broker";
     system.stateVersion = lib.mkDefault "23.05";
   };
 }

modules/nixos/common/store.nix

@@ -1,10 +0,0 @@
-{ lib, config, ... }:
-{
-  options.swarselsystems.modules.storeOptimize = lib.mkEnableOption "store optimization config";
-  config = lib.mkIf config.swarselsystems.modules.storeOptimize {
-    nix.optimise = {
-      automatic = true;
-      dates = [ "weekly" ];
-    };
-  };
-}

modules/nixos/server/default.nix

@@ -9,8 +9,6 @@ in
     "${modulesPath}/nixos/common/home-manager.nix"
     "${modulesPath}/nixos/common/home-manager-extra.nix"
     "${modulesPath}/nixos/common/xserver.nix"
-    "${modulesPath}/nixos/common/gc.nix"
-    "${modulesPath}/nixos/common/store.nix"
     "${modulesPath}/nixos/common/time.nix"
     "${modulesPath}/nixos/common/users.nix"
     "${modulesPath}/nixos/common/nix-ld.nix"