Weekly garbage collection

hosts/desktop.nix

@@ -46,7 +46,8 @@ with lib.my;
     neovim
   ];
 
-  nix.settings = {
+  nix = {
+    settings = {
       connect-timeout = 5;
       log-lines = 25;
       min-free = 128000000;
@@ -61,6 +62,12 @@ with lib.my;
         "odyssey.mesh.vimium.net:ZhQhjscPWjoN4rlZwoMELznEiBnZ9O26iyGA27ibilQ="
       ];
     };
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "-d --delete-older-than 7d";
+    };
+  };
 
   modules.desktop.gnome.enable = true;
   modules.networking.tailscale.enable = true;

hosts/server.nix

@@ -34,6 +34,17 @@ with lib.my;
     neovim
   ];
 
+  nix = {
+    settings = {
+      auto-optimise-store = true;
+    };
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "-d --delete-older-than 7d";
+    };
+  };
+
   modules.networking.tailscale = {
     enable = true;
     restrictSSH = false;