diff --git a/.bauke/nix/azedia/configuration.nix b/.bauke/nix/azedia/configuration.nix
index e8eceef..a316cc9 100644
--- a/.bauke/nix/azedia/configuration.nix
+++ b/.bauke/nix/azedia/configuration.nix
@@ -1,6 +1,6 @@
 # The main configuration file.
 
-{ config, pkgs, ... }:
+{ ... }:
 
 {
   imports = [
@@ -12,7 +12,10 @@
   ];
 
   nix = {
-    settings.experimental-features = [ "flakes" "nix-command" ];
+    settings.experimental-features = [
+      "flakes"
+      "nix-command"
+    ];
   };
 
   nixpkgs = {
diff --git a/.bauke/nix/azedia/programs-services.nix b/.bauke/nix/azedia/programs-services.nix
index 06289b3..d8ce29c 100644
--- a/.bauke/nix/azedia/programs-services.nix
+++ b/.bauke/nix/azedia/programs-services.nix
@@ -1,6 +1,6 @@
 # Configuration for programs and services.
 
-{ pkgs, ... }:
+{ ... }:
 
 {
   programs = {
diff --git a/.bauke/nix/azedia/users.nix b/.bauke/nix/azedia/users.nix
index f22ca45..480404e 100644
--- a/.bauke/nix/azedia/users.nix
+++ b/.bauke/nix/azedia/users.nix
@@ -8,7 +8,10 @@
 
     users.bauke = {
       description = "Bauke";
-      extraGroups = [ "docker" "wheel" ];
+      extraGroups = [
+        "docker"
+        "wheel"
+      ];
       isNormalUser = true;
     };
   };
diff --git a/.bauke/nix/stardust/configuration.nix b/.bauke/nix/stardust/configuration.nix
index 0a16587..d080ead 100644
--- a/.bauke/nix/stardust/configuration.nix
+++ b/.bauke/nix/stardust/configuration.nix
@@ -1,6 +1,6 @@
 # The main configuration file.
 
-{ config, pkgs, ... }:
+{ config, ... }:
 
 {
   imports = [
@@ -15,7 +15,10 @@
   musnix.enable = true;
 
   nix = {
-    settings.experimental-features = [ "flakes" "nix-command" ];
+    settings.experimental-features = [
+      "flakes"
+      "nix-command"
+    ];
   };
 
   nixpkgs = {
diff --git a/.bauke/nix/stardust/packages.nix b/.bauke/nix/stardust/packages.nix
index 055656b..c265815 100644
--- a/.bauke/nix/stardust/packages.nix
+++ b/.bauke/nix/stardust/packages.nix
@@ -144,13 +144,21 @@
       xorg.libXcursor
       zam-plugins
       (callPackage ./samrewritten.nix { })
-      (unstable.clonehero.overrideAttrs ({ postInstall ? "", ... }: {
-        # Remove the built-in songs from Clone Hero.
-        postInstall = postInstall + ''
-          rm -rf "$out/share/clonehero/StreamingAssets/songs"
-          mkdir "$out/share/clonehero/StreamingAssets/songs"
-        '';
-      }))
+      (unstable.clonehero.overrideAttrs (
+        {
+          postInstall ? "",
+          ...
+        }:
+        {
+          # Remove the built-in songs from Clone Hero.
+          postInstall =
+            postInstall
+            + ''
+              rm -rf "$out/share/clonehero/StreamingAssets/songs"
+              mkdir "$out/share/clonehero/StreamingAssets/songs"
+            '';
+        }
+      ))
       (wrapOBS {
         plugins = with obs-studio-plugins; [
           input-overlay
diff --git a/.bauke/nix/stardust/samrewritten.nix b/.bauke/nix/stardust/samrewritten.nix
index 1d80fe9..1933ebc 100644
--- a/.bauke/nix/stardust/samrewritten.nix
+++ b/.bauke/nix/stardust/samrewritten.nix
@@ -1,12 +1,13 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, pkg-config
-, curl
-, glibmm
-, gtkmm3
-, steam
-, yajl
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  pkg-config,
+  curl,
+  glibmm,
+  gtkmm3,
+  steam,
+  yajl,
 }:
 
 stdenv.mkDerivation rec {
@@ -21,7 +22,13 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ curl glibmm gtkmm3 steam yajl ];
+  buildInputs = [
+    curl
+    glibmm
+    gtkmm3
+    steam
+    yajl
+  ];
 
   installFlags = [ "PREFIX=$(out)" ];
 
diff --git a/.bauke/nix/stardust/system.nix b/.bauke/nix/stardust/system.nix
index d43102d..19880d7 100644
--- a/.bauke/nix/stardust/system.nix
+++ b/.bauke/nix/stardust/system.nix
@@ -23,9 +23,19 @@
   fonts = {
     fontconfig = {
       defaultFonts = {
-        monospace = [ "Hasklig" "Victor Mono" "DejaVu Sans Mono" ];
-        sansSerif = [ "Inter" "DejaVu Sans" ];
-        serif = [ "Inter" "DejaVu Sans" ];
+        monospace = [
+          "Hasklig"
+          "Victor Mono"
+          "DejaVu Sans Mono"
+        ];
+        sansSerif = [
+          "Inter"
+          "DejaVu Sans"
+        ];
+        serif = [
+          "Inter"
+          "DejaVu Sans"
+        ];
       };
     };
 
@@ -83,13 +93,9 @@
       # specified twice. To make it work, right-click the NetworkManager tray
       # icon and toggle "Enable Networking", then check "/etc/resolv.conf" that
       # this IP is at the top.
-      insertNameservers = [
-        "192.168.0.202"
-      ];
+      insertNameservers = [ "192.168.0.202" ];
     };
-    nameservers = [
-      "192.168.0.202"
-    ];
+    nameservers = [ "192.168.0.202" ];
   };
 
   security = {
diff --git a/.bauke/nix/stardust/users.nix b/.bauke/nix/stardust/users.nix
index 0981dcd..c952149 100644
--- a/.bauke/nix/stardust/users.nix
+++ b/.bauke/nix/stardust/users.nix
@@ -8,7 +8,13 @@
 
     users.bauke = {
       description = "Bauke";
-      extraGroups = [ "adbusers" "networkmanager" "plugdev" "vboxusers" "wheel" ];
+      extraGroups = [
+        "adbusers"
+        "networkmanager"
+        "plugdev"
+        "vboxusers"
+        "wheel"
+      ];
       isNormalUser = true;
     };
   };
diff --git a/.config/VSCodium/User/settings.json b/.config/VSCodium/User/settings.json
index 8b0a43f..5f8eafb 100644
--- a/.config/VSCodium/User/settings.json
+++ b/.config/VSCodium/User/settings.json
@@ -76,6 +76,14 @@
   "liveServer.settings.wait": 1000,
   // Nix (ID: jnoortheen.nix-ide)
   "nix.enableLanguageServer": true,
+  "nix.serverPath": "nil",
+  "nix.serverSettings": {
+    "nil": {
+      "formatting": {
+        "command": ["nixfmt"]
+      }
+    }
+  },
   // Nix Environment Selector (ID: arrterian.nix-env-selector)
   "nixEnvSelector.nixFile": "${workspaceRoot}/flake.nix",
   // vscode-pdf (ID: tomoki1207.pdf)