formatted everything, things are looking nice now.

options/common/bluetooth.nix

@@ -1,19 +1,18 @@
 { config, lib, pkgs, ... }:
-let 
-  username = config.modules.other.system.username;
+let username = config.modules.other.system.username;
 in {
-    hardware.bluetooth = {
-        enable = true;
-        powerOnBoot = true;
-    };
+  hardware.bluetooth = {
+    enable = true;
+    powerOnBoot = true;
+  };
 
-    services.blueman.enable = true;
+  services.blueman.enable = true;
 
-    # Bluetooth headset media control buttons
-    systemd.user.services.mpris-proxy = {
-        description = "Mpris proxy";
-        after = [ "network.target" "sound.target" ];
-        wantedBy = [ "default.target" ];
-        serviceConfig.ExecStart = "${pkgs.bluez}/bin/mpris-proxy";
-    };
+  # Bluetooth headset media control buttons
+  systemd.user.services.mpris-proxy = {
+    description = "Mpris proxy";
+    after = [ "network.target" "sound.target" ];
+    wantedBy = [ "default.target" ];
+    serviceConfig.ExecStart = "${pkgs.bluez}/bin/mpris-proxy";
+  };
 }

options/common/gpu/nvidia.nix

@@ -1,5 +1,4 @@
-{ config, lib, pkgs, ...}:
-{
+{ config, lib, pkgs, ... }: {
   services.xserver.videoDrivers = [ "nvidia" ];
   hardware.opengl = {
     enable = true;

options/common/networking.nix

@@ -1,19 +1,15 @@
 { config, lib, ... }:
-let 
-  username = config.modules.other.system.username;
+let username = config.modules.other.system.username;
 in {
-networking = {
+  networking = {
     networkmanager = {
-        enable = true;
-        dns = "systemd-resolved";
+      enable = true;
+      dns = "systemd-resolved";
     };
   };
   services.resolved = {
-      enable = true;
-      fallbackDns = [
-      "9.9.9.9"
-      "2620::fe::fe"
-      ];
+    enable = true;
+    fallbackDns = [ "9.9.9.9" "2620::fe::fe" ];
   };
   users.users.${username}.extraGroups = [ "networkmanager" ];
 }

options/common/pin-registry.nix

@@ -1,4 +1,3 @@
-{ inputs, lib, ...}: 
-{
-  nix.registry = lib.mapAttrs (_: v: {flake = v; }) inputs;
+{ inputs, lib, ... }: {
+  nix.registry = lib.mapAttrs (_: v: { flake = v; }) inputs;
 }

options/common/preserve-system.nix

@@ -1,6 +1 @@
-{
-    self,
-    ...
-}: {
-    environment.etc."current-flake".source = self;
-}
+{ self, ... }: { environment.etc."current-flake".source = self; }