diff --git a/home/home.nix b/home/home.nix
index 7156011..4795865 100644
--- a/home/home.nix
+++ b/home/home.nix
@@ -1,41 +1,55 @@
 { config, pkgs, ... }:
-
 {
   home = {
     username = "hms";
     homeDirectory = "/home/hms";
 
     # Packages
-    packages = with pkgs; [
-      # Utilities
-      xz
-      zip
-      unzip
-      ripgrep
-      tealdeer
-      zoxide
-      just
+    packages =
+      with pkgs;
+      [
+        # Utilities
+        xz
+        zip
+        unzip
+        ripgrep
+        tealdeer
+        zoxide
+        just
+        gnome-tweaks
+        protonmail-bridge-gui
+        xclip
+        adw-gtk3
+        nerd-fonts.adwaita-mono
 
-      # Applications
-      blackbox-terminal
-      zotero
-      zulip
-      discord
-      signal-desktop
-      gapless
-      protonmail-bridge-gui
-      newsflash
-      gnome-solanum
+        # Applications
+        blackbox-terminal
+        zotero
+        zulip
+        discord
+        signal-desktop
+        gapless
+        newsflash
+        gnome-solanum
 
-      # Development
-      ## Typst, LaTeX
-      tinymist
-      texliveFull
+        # Development
+        ## Typst, LaTeX
+        tinymist
+        texliveFull
 
-      ## Nix
-      nixfmt-rfc-style
-      nil
-    ];
+        ## Nix
+        nixfmt-rfc-style
+        nil
+      ]
+      ++ (with gnomeExtensions; [
+        blur-my-shell
+        clipboard-indicator
+        rounded-window-corners-reborn
+        runcat
+        caffeine
+        launch-new-instance
+        light-style
+      ]);
 
     # Bash configuration
     shell.enableBashIntegration = true;
@@ -62,98 +76,97 @@
     stateVersion = "25.11";
   };
 
-  programs = {
-    home-manager.enable = true;
+  programs.home-manager.enable = true;
+  programs.taskwarrior = {
+    enable = true;
+    dataLocation = "${config.home.homeDirectory}/.local/share/task";
+    colorTheme = "light-256";
+    config.editor = "hx";
+  };
 
-    taskwarrior = {
-      enable = true;
-      dataLocation = "${config.home.homeDirectory}/.local/share/task";
-      colorTheme = "light-256";
-      config.editor = "hx";
+  # Helix configuration
+  programs.helix = {
+    enable = true;
+    defaultEditor = true;
+    settings = {
+      theme = "adwaita-light";
+      editor = {
+        lsp.display-messages = true;
+        inline-diagnostics.cursor-line = "hint";
+        rulers = [ 81 ];
+        gutters.layout = [ "diagnostics" ];
+      };
+      keys.insert.j.k = "normal_mode";
     };
+  };
+  programs.jujutsu = {
+    enable = true;
+    settings = {
+      user = {
+        name = "Henri Saudubray";
+        email = "henri.saudubray@proton.me";
+      };
+      ui.default-command = "log";
+    };
+  };
 
-    # Helix configuration
-    helix = {
-      enable = true;
-      defaultEditor = true;
+  programs.firefox.enable = true;
+  programs.librewolf = {
+    enable = true;
+    profiles.default = {
+      name = "Default";
       settings = {
-        theme = "adwaita-light";
-        editor = {
-          lsp.display-messages = true;
-          inline-diagnostics.cursor-line = "hint";
-          rulers = [ 81 ];
-          gutters.layout = [ "diagnostics" ];
-        };
-        keys.insert.j.k = "normal_mode";
+        "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+        "svg.context-properties.content.enabled" = true;
+        "gnomeTheme.hideSingleTab" = true;
       };
-    };
-
-    jujutsu = {
-      enable = true;
-      settings = {
-        user = {
-          name = "Henri Saudubray";
-          email = "henri.saudubray@proton.me";
-        };
-        ui.default-command = "log";
-      };
-    };
-
-    firefox = {
-      enable = true;
-      profiles.default = {
-        name = "Default";
-        settings = {
-          "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
-          "svg.context-properties.content.enabled" = true;
-          "gnomeTheme.hideSingleTab" = true;
-        };
-        userChrome = ''
-          @import "firefox-gnome-theme/userChrome.css";
-          @import "firefox-gnome-theme/theme/colors/dark.css";
-        '';
-      };
-    };
-
-    bat.enable = true;
-
-    git = {
-      enable = true;
-      settings = {
-        user = {
-          email = "henri.saudubray@proton.me";
-          name = "Henri Saudubray";
-        };
-        init.defaultBranch = "main";
-      };
-      signing.format = "openpgp";
-    };
-
-    bash = {
-      enable = true;
-      bashrcExtra = ''
-        export PS1=" \W \[\e[33m\]λ\[\e[0m\] "
-
-        task ls
-        if [ "$(ls -A ~/dwn)" ]; then echo "TODO: organize downloads."; fi
+      userChrome = ''
+        @import "librewolf-gnome-theme/userChrome.css";
+        @import "librewolf-gnome-theme/theme/colors/dark.css";
       '';
     };
+  };
 
-    gpg.enable = true;
-
-    zoxide = {
-      enable = true;
-      enableBashIntegration = true;
-      options = [ "--cmd cd" ];
+  programs.bat.enable = true;
+  programs.git = {
+    enable = true;
+    settings = {
+      user = {
+        email = "henri.saudubray@proton.me";
+        name = "Henri Saudubray";
+      };
+      init.defaultBranch = "main";
     };
-
-    direnv = {
-      enable = true;
-      enableBashIntegration = true;
-      nix-direnv.enable = true;
+    signing = {
+      format = "openpgp";
+      signByDefault = true;
+      key = "0x7065F57ED8856128";
     };
   };
 
+  programs.bash = {
+    enable = true;
+    bashrcExtra = ''
+      export PS1=" \W \[\e[33m\]λ\[\e[0m\] "
+      task ls
+      if [ "$(ls -A ~/dwn)" ]; then echo "TODO: organize downloads."; fi
+    '';
+  };
+
+  programs.gpg.enable = true;
+
+  programs.zoxide = {
+    enable = true;
+    enableBashIntegration = true;
+    options = [ "--cmd cd" ];
+  };
+
+  programs.direnv = {
+    enable = true;
+    enableBashIntegration = true;
+    nix-direnv.enable = true;
+  };
+
   xdg.userDirs = {
     enable = true;
     # createDirectories = true;
@@ -167,6 +180,7 @@
     videos = "${config.home.homeDirectory}/vid";
   };
 
+  ## FIXME: Find an alternative.
   # systemd.user.services.helix-theme = {
   #   Unit = {
   #     Description = "Helix System Colour Scheme Synchronisation Service";
@@ -181,9 +195,7 @@
   #     ExecStart =
   #       let
   #         update-script = pkgs.writeShellScript "helix-theme-update" ''
-  #           #!/bin/sh
   #           set -eu -o pipefail
-
   #           if [ "$1" = "default" ]; then
   #             sed -i 's/theme = ".*"/theme = "adwaita-light"/' \
   #               $HOME/.config/helix/config.toml
@@ -191,12 +203,10 @@
   #             sed -i 's/theme = ".*"/theme = "adwaita-dark"/' \
   #               $HOME/.config/helix/config.toml
   #           fi
-
   #           killall -s SIGUSR1 hx
   #         '';
   #       in
   #       "${pkgs.writeShellScript "helix-theme-monitor" ''
-  #         #!/bin/sh
   #         gsettings monitor org.gnome.desktop.interface color-scheme \
   #           | xargs -L1 bash -c "source ${update-script}"
   #       ''}";
@@ -204,8 +214,52 @@
   # };
 
   dconf.settings = {
-    "org/gnome/TextEditor" = {
-      keybindings = "vim";
+    "org/gnome/TextEditor".keybindings = "vim";
+    "org/gnome/shell" = {
+      disable-user-extensions = false;
+      enabled-extensions = [
+        "clipboard-indicator@tudmotu.com"
+        "rounded-window-corners@fxgn"
+        "runcat@kolesnikov.se"
+        "caffeine@patapon.info"
+        "launch-new-instance@gnome-shell-extensions.gcampax.github.com"
+      ];
     };
+    "org/gnome/desktop/interface" = {
+      gtk-theme = "adw-gtk3";
+      show-battery-percentage = true;
+    };
+    "org/gnome/desktop/wm/preferences".button-layout = "appmenu:minimize,maximize,close";
+
+    ## FIXME: Figure out why this does not work.
+
+    # "org/gnome/desktop/wm/keybindings" = {
+    #   switch-applications = [ "<Alt>grave" ];
+    #   switch-applications-backwards = [ "<Shift><Alt>grave" ];
+    #   switch-windows = [ "<Alt>Tab" ];
+    #   switch-windows-backwards = [ "<Shift><Alt>Tab" ];
+    # };
+    # "org/gnome/settings-daemon/plugins/media-keys".custom-keybindings = [
+    #   "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0"
+    #   "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1"
+    # ];
+    # "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0" = {
+    #   name = "Terminal";
+    #   command = "blackbox";
+    #   binding = "<Super>Return";
+    # };
+    # "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1" = {
+    #   name = "Dark mode switcher";
+    #   command = "${pkgs.writeShellScript "gnome-dark-mode-switcher" ''
+    #     SCHEMA=org.gnome.desktop.interface
+    #     KEY=color-scheme
+    #     if [ "$(gsettings get "$SCHEMA" "$KEY")" = "'prefer-dark'" ]; then
+    #       gsettings set "$SCHEMA" "$KEY" "prefer-light";
+    #     else
+    #       gsettings set "$SCHEMA" "$KEY" "prefer-dark";
+    #     fi
+    #   ''}";
+    #   binding = "<Super>d";
+    # };
   };
 }
diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 218dd49..7380dfc 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -1,23 +1,18 @@
 { pkgs, ... }:
-
 {
-  imports = [
-    ./hardware-configuration.nix
-  ];
+  imports = [ ./hardware-configuration.nix ];
 
   # Use flakes.
   nix.settings.experimental-features = "nix-command flakes";
 
   # Bootloader.
-  boot = {
-    loader = {
-      systemd-boot.enable = true;
-      efi.canTouchEfiVariables = true;
-    };
-    kernelPackages = pkgs.linuxPackages_latest;
-    initrd.luks.devices."luks-374c6259-18c4-462b-9f30-9c9648de00ae".device =
-      "/dev/disk/by-uuid/374c6259-18c4-462b-9f30-9c9648de00ae";
+  boot.loader = {
+    systemd-boot.enable = true;
+    efi.canTouchEfiVariables = true;
   };
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.initrd.luks.devices."luks-374c6259-18c4-462b-9f30-9c9648de00ae".device =
+    "/dev/disk/by-uuid/374c6259-18c4-462b-9f30-9c9648de00ae";
 
   networking = {
     hostName = "nixos";
@@ -28,48 +23,42 @@
   time.timeZone = "Europe/Paris";
 
   # Select internationalisation properties.
-  i18n = {
-    defaultLocale = "en_GB.UTF-8";
-    extraLocaleSettings = {
-      LC_ADDRESS = "fr_FR.UTF-8";
-      LC_IDENTIFICATION = "fr_FR.UTF-8";
-      LC_MEASUREMENT = "fr_FR.UTF-8";
-      LC_MONETARY = "fr_FR.UTF-8";
-      LC_NAME = "fr_FR.UTF-8";
-      LC_NUMERIC = "fr_FR.UTF-8";
-      LC_PAPER = "fr_FR.UTF-8";
-      LC_TELEPHONE = "fr_FR.UTF-8";
-      LC_TIME = "fr_FR.UTF-8";
-    };
+  i18n.defaultLocale = "en_GB.UTF-8";
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "fr_FR.UTF-8";
+    LC_IDENTIFICATION = "fr_FR.UTF-8";
+    LC_MEASUREMENT = "fr_FR.UTF-8";
+    LC_MONETARY = "fr_FR.UTF-8";
+    LC_NAME = "fr_FR.UTF-8";
+    LC_NUMERIC = "fr_FR.UTF-8";
+    LC_PAPER = "fr_FR.UTF-8";
+    LC_TELEPHONE = "fr_FR.UTF-8";
+    LC_TIME = "fr_FR.UTF-8";
   };
 
-  services = {
-    xserver = {
-      # Use X11.
-      enable = true;
-      # Set keyboard layout in X11.
-      xkb = {
-        layout = "fr";
-        variant = "ergol";
-      };
-    };
-    # Use GNOME.
-    displayManager.gdm.enable = true;
-    desktopManager.gnome.enable = true;
-    # Use CUPS for printing.
-    printing.enable = true;
-    # Use pipewire for audio.
-    pulseaudio.enable = false;
-    pipewire = {
-      enable = true;
-      alsa = {
-        enable = true;
-        support32Bit = true;
-      };
-      pulse.enable = true;
-    };
-    openssh.enable = true;
+  services.xserver = {
+    # Use X11.
+    enable = true;
+    # Set keyboard layout in X11.
+    xkb.layout = "fr";
+    xkb.variant = "ergol";
   };
+  # Use GNOME.
+  services.displayManager.gdm.enable = true;
+  services.desktopManager.gnome.enable = true;
+
+  services.gnome.gnome-browser-connector.enable = true;
+  # Use CUPS for printing.
+  services.printing.enable = true;
+  # Use pipewire for audio.
+  services.pulseaudio.enable = false;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+  services.openssh.enable = true;
 
   # Configure console keymap.
   console.keyMap = "fr";
@@ -85,8 +74,6 @@
     packages = [ ];
   };
 
-  programs.firefox.enable = true;
-
   nixpkgs = {
     overlays = [ ];
     config.allowUnfree = true;
@@ -95,19 +82,8 @@
   environment.systemPackages = with pkgs; [
     helix
     wget
-    gnome-tweaks
-    gnomeExtensions.blur-my-shell
-    gnomeExtensions.clipboard-indicator
-    gnomeExtensions.rounded-window-corners-reborn
-    gnomeExtensions.runcat
-    gnomeExtensions.caffeine
-    gnomeExtensions.launch-new-instance
-    nerd-fonts.adwaita-mono
-    adw-gtk3
     gnumake
     clang
-    just
-    xclip
   ];
 
   programs.gnupg.agent = {