diff --git a/flake.lock b/flake.lock
index f863486..367e334 100644
--- a/flake.lock
+++ b/flake.lock
@@ -24,11 +24,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1741663108,
-        "narHash": "sha256-9RaZ3HuOptioE94IQ/nnzC2x5cMaRi6NX8d8ZOqhJ68=",
+        "lastModified": 1742098834,
+        "narHash": "sha256-l98XVpNXW6hr0AsxCeQZbdf6EGT8OpHdkWBi7sdel4s=",
         "owner": "tpwrules",
         "repo": "nixos-apple-silicon",
-        "rev": "4264de082e92e7d7ba7fa2ad5b5b1a8818b5d048",
+        "rev": "8457960249bcfd34c22838e20eaa7d8261428688",
         "type": "github"
       },
       "original": {
@@ -142,11 +142,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1741851582,
-        "narHash": "sha256-cPfs8qMccim2RBgtKGF+x9IBCduRvd/N5F4nYpU0TVE=",
+        "lastModified": 1742069588,
+        "narHash": "sha256-C7jVfohcGzdZRF6DO+ybyG/sqpo1h6bZi9T56sxLy+k=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "6607cf789e541e7873d40d3a8f7815ea92204f32",
+        "rev": "c80f6a7e10b39afcc1894e02ef785b1ad0b0d7e5",
         "type": "github"
       },
       "original": {
diff --git a/hosts/linux/shared.nix b/hosts/linux/shared.nix
index d0f4ace..b3f1bf6 100644
--- a/hosts/linux/shared.nix
+++ b/hosts/linux/shared.nix
@@ -68,7 +68,12 @@
     # we'll use geolocation via the Arch Linux API key.
     geoclue2 = {
       enable = true;
-      geoProviderUrl = "https://www.googleapis.com/geolocation/v1/geolocate?key=AIzaSyDwr302FpOSkGRpLlUpPThNTDPbXcIn_FM";
+      geoProviderUrl = "https://api.beacondb.net/v1/geolocate";
+
+      # Let's be generous :)
+      submitData = true;
+      submissionUrl = "https://api.beacondb.net/v2/geosubmit";
+      submissionNick = "geoclue";
     };
   };
 
diff --git a/hosts/linux/spotlights-macbook-air/configuration.nix b/hosts/linux/spotlights-macbook-air/configuration.nix
index 37b254b..58d1d3f 100644
--- a/hosts/linux/spotlights-macbook-air/configuration.nix
+++ b/hosts/linux/spotlights-macbook-air/configuration.nix
@@ -17,6 +17,12 @@
     efi.canTouchEfiVariables = false;
   };
 
+  # Allow GNOME to dynamically set the
+  # time zone based on current location.
+  #
+  # https://www.reddit.com/r/NixOS/comments/1411gjs/comment/jo4wau3/
+  time.timeZone = lib.mkForce null;
+
   # Asahi Linux support
   hardware.asahi = {
     peripheralFirmwareDirectory = /boot/asahi;
@@ -32,6 +38,9 @@
       enable = true;
       settings.General.EnableNetworkConfiguration = true;
     };
+
+    # Necessary for WireGuard
+    firewall.checkReversePath = false;
   };
 
   nixpkgs.overlays = [
@@ -57,19 +66,15 @@
         '';
       });
 
-      # muvm requires a few things for libkrun.
+      # muvm requires a few custom flags for libkrun.
+      # Additionally, we override the upstream version of
+      # `virglrenderer` to use separate other flags.
+      #
+      # This could also be accomplished with overriding inputs,
+      # but as we control the actual source, this is easier.
       libkrun = prev.callPackage ./libkrun/package.nix { };
 
-      # https://github.com/NixOS/nixpkgs/pull/347792#issuecomment-2667343848
-      virglrenderer = prev.virglrenderer.overrideAttrs (old: {
-        src = final.fetchurl {
-          url = "https://gitlab.freedesktop.org/asahi/virglrenderer/-/archive/asahi-20241205.2/virglrenderer-asahi-20241205.2.tar.bz2";
-          hash = "sha256-mESFaB//RThS5Uts8dCRExfxT5DQ+QQgTDWBoQppU7U=";
-        };
-        mesonFlags = old.mesonFlags ++ [ (final.lib.mesonOption "drm-renderers" "asahi-experimental") ];
-      });
-
-      # https://github.com/NixOS/nixpkgs/pull/347792
+      # Derived from https://github.com/NixOS/nixpkgs/pull/347792
       muvm = prev.callPackage ./muvm/package.nix { };
     })
   ];
@@ -93,10 +98,16 @@
     };
   };
 
+  # Docker
   users.users.spotlight.extraGroups = [ "docker" ];
   virtualisation.docker.enable = true;
 
-  services.syncthing.enable = true;
+  services = {
+    # iOS tethering, etc
+    usbmuxd.enable = true;
+
+    syncthing.enable = true;
+  };
 
   environment.systemPackages = with pkgs; [
     # For usage with FEXRootFSFetcher
@@ -105,6 +116,7 @@
     legcord
     muvm
     vscode
+wireguard-tools
   ];
 
   # :(
diff --git a/hosts/linux/spotlights-macbook-air/libkrun/package.nix b/hosts/linux/spotlights-macbook-air/libkrun/package.nix
index 4dc32b3..240b226 100644
--- a/hosts/linux/spotlights-macbook-air/libkrun/package.nix
+++ b/hosts/linux/spotlights-macbook-air/libkrun/package.nix
@@ -1,5 +1,6 @@
 { lib
 , stdenv
+, fetchurl
 , fetchFromGitHub
 , rustPlatform
 , cargo
@@ -57,7 +58,17 @@ stdenv.mkDerivation (finalAttrs: {
     ++ lib.optionals withGpu [
       libepoxy
       libdrm
-      virglrenderer
+      # We want to override the virglrenderer input.
+      # (Overriding for all of nixpkgs means that QEMU is repeatedly rebuilt.)
+      # https://github.com/NixOS/nixpkgs/pull/347792#issuecomment-2667343848
+      (virglrenderer.overrideAttrs
+        (old: {
+          src = fetchurl {
+            url = "https://gitlab.freedesktop.org/asahi/virglrenderer/-/archive/asahi-20241205.2/virglrenderer-asahi-20241205.2.tar.bz2";
+            hash = "sha256-mESFaB//RThS5Uts8dCRExfxT5DQ+QQgTDWBoQppU7U=";
+          };
+          mesonFlags = old.mesonFlags ++ [ (lib.mesonOption "drm-renderers" "asahi-experimental") ];
+        }))
     ]
     ++ lib.optional withSound pipewire
     ++ lib.optional sevVariant openssl;