diff --git a/hosts/lookingglass/default.nix b/hosts/lookingglass/default.nix
index 5c7223a..09b2abd 100644
--- a/hosts/lookingglass/default.nix
+++ b/hosts/lookingglass/default.nix
@@ -18,6 +18,7 @@ darwin.lib.darwinSystem {
     })
     home-manager.darwinModules.home-manager
     {
+      nixpkgs.overlays = [ firefox-darwin.overlay ] ++ overlays;
       networking.hostName = "lookingglass";
       identityFile = "/Users/Noah.Masur/.ssh/id_ed25519";
       gui.enable = true;
@@ -26,9 +27,6 @@ darwin.lib.darwinSystem {
         dark = true;
       };
       mail.user = globals.user;
-      nixpkgs.overlays = [ firefox-darwin.overlay ] ++ overlays;
-      # Set registry to flake packages, used for nix X commands
-      nix.registry.nixpkgs.flake = nixpkgs;
       charm.enable = true;
       neovim.enable = true;
       mail.enable = true;
diff --git a/modules/common/default.nix b/modules/common/default.nix
index 9793826..713b248 100644
--- a/modules/common/default.nix
+++ b/modules/common/default.nix
@@ -81,7 +81,6 @@
 
       gc = {
         automatic = true;
-        dates = "weekly";
         options = "--delete-older-than 7d";
       };
 
diff --git a/modules/common/shell/nixpkgs.nix b/modules/common/shell/nixpkgs.nix
index ebf3979..cb8262d 100644
--- a/modules/common/shell/nixpkgs.nix
+++ b/modules/common/shell/nixpkgs.nix
@@ -70,7 +70,7 @@
     # Set registry to this flake's packages, used for nix X commands
     registry.nixpkgs.to = {
       type = "path";
-      path = pkgs.path;
+      path = builtins.toString pkgs.path;
     };
 
   };
diff --git a/modules/darwin/system.nix b/modules/darwin/system.nix
index 6361485..a1f89b5 100644
--- a/modules/darwin/system.nix
+++ b/modules/darwin/system.nix
@@ -4,6 +4,13 @@
 
     services.nix-daemon.enable = true;
 
+    # This setting only applies to Darwin, different on NixOS
+    nix.gc.interval = {
+      Hour = 12;
+      Minute = 15;
+      Day = 1;
+    };
+
     environment.shells = [ pkgs.fish ];
 
     security.pam.enableSudoTouchIdAuth = true;
diff --git a/modules/nixos/system/default.nix b/modules/nixos/system/default.nix
index d23505b..982274f 100644
--- a/modules/nixos/system/default.nix
+++ b/modules/nixos/system/default.nix
@@ -8,6 +8,9 @@
     system.stateVersion =
       config.home-manager.users.${config.user}.home.stateVersion;
 
+    # This setting only applies to NixOS, different on Darwin
+    nix.gc.dates = "weekly";
+
   };
 
 }