add optimize for nix store

hosts/sakotop/configuration.nix

@@ -66,6 +66,8 @@
         # makes nix search nixpkgs <example>
         # ALOT faster
         search.enable = true;
+        # optimize store 
+        optimize.enable = true;
       };
       zsh.enable = true;
       newsboat.enable = true;
@@ -88,13 +90,6 @@
 
     services.xserver.videoDrivers = [ "nvidia" ];
 
-  # garbage collection
-  nix.gc = {
-      automatic = true;
-      dates = "weekly";
-      options = "--delete-older-than 7d";
-  };
-
   # Enable the OpenSSH daemon.
   # services.openssh.enable = true;
 

modules/shell/nix/default.nix

@@ -1,5 +1,6 @@
 {
   imports = [
     ./search.nix
+    ./optimization.nix
   ];
 }

modules/shell/nix/optimization.nix

@@ -0,0 +1,30 @@
+{ inputs, options, config, lib, pkgs, ...}:
+# this automatically optimizes stuff like nix-store
+# and cleans out garbage weekly
+# also limits generations
+with lib;
+let cfg = config.modules.shell.nix.optimize;
+in
+{
+  options.modules.shell.nix.optimize = {
+    enable = mkEnableOption false;
+  };
+
+  config = mkIf cfg.enable { 
+    nix = {
+      # garbage collection
+      gc = {
+        automatic = true;
+        dates = "weekly";
+        options = "--delete-older-than 1w";
+      };
+      # optimizes store to reduce storage space :)
+      # does do alot on the cpu though :p
+      # shouldnt be a problem on high core cpus
+      # but might be a little problem on 
+      # low end machines
+      # who cares though free storage woohoo
+      settings.auto-optimise-store = true;
+    };
+  };
+}