update

- niri: switch from replaceStrings patching to plain config.kdl for simplicity
- niri: add Mod+Shift+Q (close), Mod+Shift+HJKL/Arrow (move window),
  Mod+Shift+1-9 (move to workspace)
- niri: add layer-rule to disable background-blur on noctalia bar (fix seam)
- noctalia: add capsule_group for cpu+ram (group:sysmon), panel_overlap,
  contact_shadow; corner_radius_scale 1.0
- noctalia: add all LC_* locale overrides in plasma-localerc (fix vi_VN calendar)
- system: TLP (battery), UPower, disable power-profiles-daemon (conflicts with TLP)
- system: DDC/CI support (ddcutil + i2c-dev + hardware.i2c)
- system: enable fish shell system-wide
- packages: add tree, fish, ddcutil; noctalia required services documented
- README: full rewrite with current structure, keybinds, fresh-install steps

README.md

@@ -1,92 +1,179 @@
 # nixos-config
 
-Personal NixOS configuration using flakes and home-manager.
+Personal NixOS configuration using flakes + home-manager.
 
 ## Structure
 
 ```
 nixos-config/
-├── flake.nix                         # Entry point — inputs and outputs
+├── flake.nix                              # Inputs and outputs
+├── flake.lock                             # Pinned input versions
 ├── hosts/
 │   └── nixos/
-│       ├── configuration.nix         # System configuration
+│       ├── configuration.nix              # System-level config (kernel, services, users)
-│       └── hardware-configuration.nix # Auto-generated, machine-specific
+│       └── hardware-configuration.nix     # Auto-generated, machine-specific (not in git)
 └── home/
-    └── duynguyen/
+    ├── hosts/
-        └── default.nix               # Home-manager config (user packages, dotfiles)
+    │   └── nixos.nix                      # Home-manager entry point for this machine
+    └── modules/                           # Reusable modules, imported by hosts/nixos.nix
+        ├── niri/
+        │   ├── default.nix                # Niri module (loads config.kdl + sub-modules)
+        │   ├── config.kdl                 # Niri compositor config (edit this directly)
+        │   ├── noctalia/
+        │   │   ├── default.nix            # Noctalia shell settings
+        │   │   └── wallpapers/            # Wallpaper images (add your own here)
+        │   └── polkit/
+        │       └── default.nix            # Polkit authentication agent (systemd service)
+        ├── kitty/
+        │   └── default.nix                # Kitty terminal settings
+        ├── cli/
+        │   └── default.nix                # Shell, git, starship, zoxide, fish
+        └── applications/
+            └── default.nix                # All user packages, KDE/Plasma settings
 ```
 
+> `home/hosts/` and `hosts/` are two different layers:
+> - `hosts/` = NixOS system config (runs as root)
+> - `home/hosts/` = home-manager user config (runs as your user)
+>
+> When adding a second machine, add one file to each.
+
 ## What's configured
 
-- **KDE Plasma 6** on Wayland via SDDM
+### Desktop
-- **Vietnamese input** via fcitx5 + unikey (Telex/VNI)
+- **Niri** scrollable-tiling Wayland compositor
-  - Open `fcitx5-configtool` → Input Method tab → add **Unikey**
+- **Noctalia shell** — bar, launcher, lock screen, wallpaper, idle, notifications (replaces waybar / walker / swaylock / swaybg / mako)
-- **Locale**: English UI, Vietnamese formats (currency, time, etc.), Asia/Ho_Chi_Minh timezone
+- **KDE Plasma 6** via SDDM — available as a secondary session, Breeze Dark theme
-- **Pipewire** for audio
+- **XWayland satellite** for X11 app compatibility under Niri
-- **Packages**: firefox, kate, claude-code, git
+- **Polkit** via `polkit-kde-agent-1`
+
+### System
+- **Locale**: English UI (`en_US.UTF-8`) everywhere, timezone `Asia/Ho_Chi_Minh`
+- **Vietnamese input**: fcitx5 + unikey (Telex/VNI), toggle with `Super+Space`
+- **Audio**: Pipewire (ALSA + PulseAudio compat)
+- **Bluetooth**: enabled + Blueman applet
+- **Power**: TLP (automatic power management), UPower (battery status)
+- **Display**: DDC/CI support for external monitor brightness (`ddcutil`)
+- **Fonts**: JetBrainsMono Nerd Font, Noto Color Emoji, Font Awesome
+
+### Shell
+- **zsh** (default login shell) — autosuggestions, syntax highlighting, starship prompt, zoxide
+- **fish** — available as secondary shell (`fish` to launch)
+
+### Packages (selection)
+| Category | Packages |
+|---|---|
+| Browsers | firefox, zen-browser |
+| AI | claude-desktop, claude-code |
+| Terminals | kitty, ghostty, foot |
+| Editor | vscodium |
+| File manager | thunar + archive plugin + tumbler thumbnails |
+| Media | mpv, imv, obs-studio, gimp, kdenlive |
+| Office | libreoffice, zathura |
+| Chat | telegram-desktop |
+| CLI tools | tree, btop, htop, ripgrep, fd, fzf, eza, bat, dust, ncdu, lazygit, delta, yazi, tldr, tokei, jq, yq |
+| System | brightnessctl, playerctl, ddcutil, grim, slurp, swappy, pavucontrol, blueman |
+
+## Niri keybindings
+
+| Key | Action |
+|---|---|
+| `Mod+T` | Open ghostty terminal |
+| `Mod+Space` | Noctalia launcher |
+| `Mod+S` | Noctalia control center |
+| `Super+Alt+L` | Lock screen |
+| `Mod+Shift+Q` | Close window |
+| `Mod+H/L` or `←/→` | Focus column left/right |
+| `Mod+J/K` or `↓/↑` | Focus window down/up |
+| `Mod+Shift+H/L` or `Shift+←/→` | Move column left/right |
+| `Mod+Shift+J/K` or `Shift+↓/↑` | Move window down/up |
+| `Mod+1-9` | Switch to workspace |
+| `Mod+Shift+1-9` | Move window to workspace |
+| `Mod+Shift+E` | Quit niri |
+
+> Edit keybindings directly in `home/modules/niri/config.kdl`.
 
 ## Reproducing on a fresh machine
 
 ### 1. Install NixOS
 
-Boot the NixOS ISO, partition, and install as normal. During install, choose KDE Plasma if prompted.
+Boot the NixOS ISO and install as usual. During partitioning, set up your disks. Choose any desktop — it will be replaced.
 
-### 2. Enable flakes temporarily
+### 2. Clone this repo
-
-```bash
-nix-shell -p git --command "bash"
-# or just proceed if git is already available
-```
-
-### 3. Clone this repo
 
 ```bash
+nix-shell -p git
 git clone <repo-url> ~/nixos-config
 cd ~/nixos-config
 ```
 
-### 4. Provide the hardware config
+### 3. Copy your hardware config
 
-`hardware-configuration.nix` is machine-specific and not tracked in git. Copy the one generated by the NixOS installer:
+`hardware-configuration.nix` is machine-specific and not tracked in git. Copy the one the installer generated:
 
 ```bash
 cp /etc/nixos/hardware-configuration.nix ~/nixos-config/hosts/nixos/hardware-configuration.nix
 ```
 
+### 4. Review `hosts/nixos/configuration.nix`
+
+Check these fields match your machine:
+- `networking.hostName` — change if you want a different hostname
+- `users.users.duynguyen` — change username if needed (update `home/hosts/nixos.nix` to match)
+- `time.timeZone` — currently `Asia/Ho_Chi_Minh`
+
 ### 5. Apply the configuration
 
 ```bash
 sudo nixos-rebuild switch --flake ~/nixos-config#nixos
 ```
 
-### 6. Lock the flake inputs
+This builds and activates the full system + home-manager config in one step.
 
-```bash
+### 6. Log out and back in
-nix flake update
-```
 
-Commit the resulting `flake.lock` so future rebuilds use the exact same package versions.
+Required so that:
+- New locale settings (`LC_*`) take effect
+- Niri session appears in SDDM
+- Home-manager environment variables are loaded
+
+At the SDDM login screen, select **Niri** from the session menu.
+
+### 7. Vietnamese input (first time only)
+
+After logging in:
+1. Open `fcitx5-configtool`
+2. **Input Method** tab → add **Unikey**
+3. Toggle EN/VI with `Super+Space`
+
+---
 
 ## Daily usage
 
 | Task | Command |
-|------|---------|
+|---|---|
-| Apply system + home changes | `sudo nixos-rebuild switch --flake ~/nixos-config#nixos` |
+| Apply changes | `sudo nixos-rebuild switch --flake ~/nixos-config#nixos` |
-| Update all inputs | `nix flake update` |
+| Update all flake inputs | `nix flake update` |
+| Update one input | `nix flake update noctalia` |
 | Roll back last switch | `sudo nixos-rebuild switch --rollback` |
 | Search packages | `nix search nixpkgs <name>` |
+| Check what changed | `git diff` |
 
-## Adding packages
+## How to modify things
 
-- **System-wide** (available to all users): `hosts/nixos/configuration.nix` → `environment.systemPackages`
+### Add a package
-- **User-level** (home-manager managed): `home/duynguyen/default.nix` → `home.packages`
+Open `home/modules/applications/default.nix` and add to `home.packages`.
-- **Per-user via NixOS**: `hosts/nixos/configuration.nix` → `users.users.duynguyen.packages`
 
-## Vietnamese input setup (fcitx5)
+### Change niri settings
+Edit `home/modules/niri/config.kdl` directly. Niri reloads the config automatically when the file changes after a rebuild.
 
-After first build:
+### Change noctalia bar / theme / idle
-1. Open **fcitx5-configtool**
+Edit `home/modules/niri/noctalia/default.nix`.
-2. Go to the **Input Method** tab → add **Unikey**
-3. Switch between English/Vietnamese with **Super+Space**
 
-Unikey supports both **Telex** (default) and **VNI** — configure in the Unikey settings.
+### Add a wallpaper
+Drop an image into `home/modules/niri/noctalia/wallpapers/` and commit it.
+
+### Add a new machine
+1. `hosts/<name>/configuration.nix` + `hardware-configuration.nix`
+2. `home/hosts/<name>.nix` — import the modules you want
+3. Add a new `nixosConfigurations.<name>` entry in `flake.nix`

flake.lock

@@ -1,5 +1,42 @@
 {
   "nodes": {
+    "claude-desktop": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1764098187,
+        "narHash": "sha256-H6JjWXhKqxZ8QLMoqndZx9e5x0Sv5AiipSmqvIxIbgo=",
+        "owner": "k3d3",
+        "repo": "claude-desktop-linux-flake",
+        "rev": "b2b040cb68231d2118906507d9cc8fd181ca6308",
+        "type": "github"
+      },
+      "original": {
+        "owner": "k3d3",
+        "repo": "claude-desktop-linux-flake",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -23,11 +60,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1785858998,
+        "lastModified": 1749174413,
-        "narHash": "sha256-fKCq5jphd6l/Ms6gc3dptkw/TcKLYub9lQE5g6rbbkc=",
+        "narHash": "sha256-urN9UMK5cd1dzhR+Lx0xHeTgBp2MatA5+6g9JaxjuQs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "04607e1165ac22c5fde6dcc54c9e0b3c0487c555",
+        "rev": "6ad174a6dc07c7742fc64005265addf87ad08615",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1786089803,
+        "narHash": "sha256-ZuvZfVW2tB5tXYEcpcfhVXB3N4OhdZLOqOviy4OD4b4=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "ee48b147c18c7de1e6ec97dc74792be42724bed1",
         "type": "github"
       },
       "original": {
@@ -37,10 +90,103 @@
         "type": "github"
       }
     },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1786106723,
+        "narHash": "sha256-CgKDSHL6rqAAQkkvg1xaZDQXb77+4XW73iGcUMJ+2w0=",
+        "rev": "f13ff45afd1bb73e640eaa08a7066dbed07e3238",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixos/unstable/nixos-26.11pre1049422.f13ff45afd1b/nixexprs.tar.zst"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://channels.nixos.org/nixos-unstable/nixexprs.tar.zst"
+      }
+    },
+    "noctalia": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_3"
+      },
+      "locked": {
+        "lastModified": 1786633340,
+        "narHash": "sha256-Kc3xbv2+z0+aV+t4IL1BfoTtB9MS0zHyI38oiv7zHxc=",
+        "owner": "noctalia-dev",
+        "repo": "noctalia-shell",
+        "rev": "4dd6f29dbaafde7b11d61ce12685d01441d4a483",
+        "type": "github"
+      },
+      "original": {
+        "owner": "noctalia-dev",
+        "repo": "noctalia-shell",
+        "type": "github"
+      }
+    },
+    "plasma-manager": {
+      "inputs": {
+        "home-manager": [
+          "home-manager"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1785762349,
+        "narHash": "sha256-jZhZkzAwc7f3exzcTDJWP2WCAchCv0iNC3UF/QsahdQ=",
+        "owner": "nix-community",
+        "repo": "plasma-manager",
+        "rev": "a19a2a029fa180911bd89c554dca1616e10f4c1d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "plasma-manager",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
+        "claude-desktop": "claude-desktop",
         "home-manager": "home-manager",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2",
+        "noctalia": "noctalia",
+        "plasma-manager": "plasma-manager",
+        "zen-browser": "zen-browser"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "zen-browser": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1786164819,
+        "narHash": "sha256-tvBlGAYyzHYdLwn035bRCrB1mcMjvNNavcNZ293AIIA=",
+        "owner": "youwen5",
+        "repo": "zen-browser-flake",
+        "rev": "f9af5f7017cea1c159e17922288fb38ff94d28cd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "youwen5",
+        "repo": "zen-browser-flake",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -7,18 +7,40 @@
       url = "github:nix-community/home-manager/release-26.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    plasma-manager = {
+      url = "github:nix-community/plasma-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.home-manager.follows = "home-manager";
+    };
+    zen-browser = {
+      url = "github:youwen5/zen-browser-flake";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    claude-desktop.url = "github:k3d3/claude-desktop-linux-flake";
+    # Noctalia: Wayland shell for Niri (bar, launcher, lock, wallpaper, idle)
+    # Uses its own pinned nixpkgs (needs unstable deps)
+    noctalia.url = "github:noctalia-dev/noctalia-shell";
   };
 
-  outputs = { self, nixpkgs, home-manager, ... }: {
+  outputs = { self, nixpkgs, home-manager, plasma-manager, zen-browser, claude-desktop, noctalia, ... }@inputs: {
     nixosConfigurations.nixos = nixpkgs.lib.nixosSystem {
       system = "x86_64-linux";
       modules = [
         ./hosts/nixos/configuration.nix
         home-manager.nixosModules.home-manager
         {
+          nixpkgs.overlays = [
+            (_: _: {
+              zen-browser = zen-browser.packages.x86_64-linux.default;
+              claude-desktop = claude-desktop.packages.x86_64-linux.default;
+            })
+          ];
           home-manager.useGlobalPkgs = true;
           home-manager.useUserPackages = true;
-          home-manager.users.duynguyen = import ./home/duynguyen/default.nix;
+          home-manager.extraSpecialArgs = { inherit inputs; };
+          home-manager.backupFileExtension = "hm-back";
+          home-manager.sharedModules = [ plasma-manager.homeModules.plasma-manager ];
+          home-manager.users.duynguyen = import ./home/hosts/nixos.nix;
         }
       ];
     };

home/duynguyen/default.nix

@@ -1,21 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  home.username = "duynguyen";
-  home.homeDirectory = "/home/duynguyen";
-  home.stateVersion = "26.05";
-
-  home.packages = with pkgs; [
-    # Add user-level packages here
-  ];
-
-  programs.bash.enable = true;
-
-  programs.git = {
-    enable = true;
-    userName = "duynguyen";
-    userEmail = "huonghaiduynhim@gmail.com";
-  };
-
-  programs.home-manager.enable = true;
-}

home/hosts/nixos.nix

@@ -0,0 +1,24 @@
+{ lib, ... }:
+{
+  home.username = "duynguyen";
+  home.homeDirectory = "/home/duynguyen";
+  home.stateVersion = "26.05";
+
+  imports = [
+    ../modules/niri
+    ../modules/kitty
+    ../modules/ghostty
+    ../modules/cli
+    ../modules/applications
+  ];
+
+  # Zen Browser scroll speed — written to all profiles so it survives profile ID changes
+  home.activation.zenBrowserUserJs = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+    for profile in "$HOME/.config/zen/"*.*/; do
+      [[ -d "$profile" ]] || continue
+      echo 'user_pref("mousewheel.default.delta_multiplier_y", 75);' > "$profile/user.js"
+    done
+  '';
+
+  programs.home-manager.enable = true;
+}

home/modules/applications/default.nix

@@ -0,0 +1,111 @@
+{ pkgs, ... }:
+{
+  # home-manager's fontconfig module references removed nodePackages;
+  # NixOS manages fontconfig at the system level anyway
+  fonts.fontconfig.enable = false;
+
+  home.sessionVariables.NIXOS_OZONE_WL = "1";
+
+  home.packages = with pkgs; [
+    # Browsers
+    zen-browser
+    claude-desktop
+
+    # Terminals
+    ghostty
+    kitty
+    foot
+
+    # Niri support
+    xdg-utils
+    inotify-tools
+
+    # Daily apps
+    mpv
+    imv
+    gimp
+    obs-studio
+    zathura
+    thunar
+    thunar-archive-plugin
+    tumbler
+    ffmpegthumbnailer
+    xarchiver
+    grim
+    slurp
+    swappy
+    libreoffice
+    telegram-desktop
+    megasync
+    pavucontrol
+    blueman
+
+    # Clipboard
+    cliphist
+    wl-clipboard
+
+    # CLI tools
+    tree
+    vim
+    neovim
+    tmux
+    fastfetch
+    btop
+    ripgrep
+    fd
+    fzf
+    eza
+    bat
+    dust
+    jq
+    yq
+    shellcheck
+    ffmpeg
+    imagemagick
+    unzip
+    p7zip
+    wiremix
+
+    # System control
+    brightnessctl
+    playerctl
+    ddcutil
+
+    # Dev tools
+    gh
+  ];
+
+  # KDE Plasma session: dark theme + touchpad preferences + English locale
+  programs.plasma = {
+    enable = true;
+    workspace.lookAndFeel = "org.kde.breezedark.desktop";
+    input.touchpads = [
+      {
+        name          = "SynPS/2 Synaptics TouchPad";
+        vendorId      = "2";
+        productId     = "7";
+        naturalScroll = true;
+        pointerSpeed  = 0.4;
+        scrollSpeed   = 0.75;
+      }
+    ];
+    # Force all KDE format/calendar locale to English so the clock widget,
+    # calendar, and date/number formatting don't fall back to vi_VN.
+    configFile."plasma-localerc"."Formats" = {
+      LANG           = "en_US.UTF-8";
+      LC_TIME        = "en_US.UTF-8";
+      LC_NUMERIC     = "en_US.UTF-8";
+      LC_MONETARY    = "en_US.UTF-8";
+      LC_MEASUREMENT = "en_US.UTF-8";
+      LC_COLLATE     = "en_US.UTF-8";
+      LC_ADDRESS     = "en_US.UTF-8";
+      LC_NAME        = "en_US.UTF-8";
+      LC_TELEPHONE   = "en_US.UTF-8";
+      LC_PAPER       = "en_US.UTF-8";
+    };
+  };
+
+  programs.vscodium = {
+    enable = true;
+  };
+}

home/modules/cli/default.nix

@@ -0,0 +1,26 @@
+{ ... }:
+{
+  programs.zsh = {
+    enable = true;
+    autosuggestion.enable    = true;
+    syntaxHighlighting.enable = true;
+  };
+
+  programs.fish.enable = true;
+
+  programs.zoxide = {
+    enable               = true;
+    enableZshIntegration = true;
+    enableFishIntegration = true;
+  };
+
+  programs.starship.enable = true;
+
+  programs.git = {
+    enable = true;
+    settings.user = {
+      name  = "duynguyen";
+      email = "huonghaiduynhim@gmail.com";
+    };
+  };
+}

home/modules/ghostty/default.nix

@@ -0,0 +1,17 @@
+{ ... }:
+{
+  programs.ghostty = {
+    enable = true;
+    settings = {
+      font-family = "JetBrainsMono Nerd Font";
+      font-size   = 11;
+
+      theme = "Catppuccin Mocha";
+
+      window-decoration = false;
+
+      # Disable ligatures
+      font-feature = [ "-liga" "-dlig" "-calt" ];
+    };
+  };
+}

home/modules/kitty/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  programs.kitty = {
+    enable = true;
+    settings.wheel_scroll_multiplier = 300;
+  };
+}

home/modules/niri/config.kdl

@@ -0,0 +1,690 @@
+// This config is in the KDL format: https://kdl.dev
+// "/-" comments out the following node.
+// Check the wiki for a full description of the configuration:
+// https://niri-wm.github.io/niri/Configuration:-Introduction
+
+// Input device configuration.
+// Find the full list of options on the wiki:
+// https://niri-wm.github.io/niri/Configuration:-Input
+input {
+    keyboard {
+        xkb {
+            // You can set rules, model, layout, variant and options.
+            // For more information, see xkeyboard-config(7).
+
+            // For example:
+            // layout "us,ru"
+            // options "grp:win_space_toggle,compose:ralt,ctrl:nocaps"
+
+            // If this section is empty, niri will fetch xkb settings
+            // from org.freedesktop.locale1. You can control these using
+            // localectl set-x11-keymap.
+        }
+
+        // Enable numlock on startup, omitting this setting disables it.
+        numlock
+    }
+
+    // Next sections include libinput settings.
+    // Omitting settings disables them, or leaves them at their default values.
+    // All commented-out settings here are examples, not defaults.
+    touchpad {
+        // off
+        tap
+        // dwt
+        // dwtp
+        // drag false
+        // drag-lock
+        natural-scroll
+        // accel-speed 0.2
+        accel-profile "flat"
+        scroll-factor 0.3
+        // scroll-method "two-finger"
+        // disabled-on-external-mouse
+    }
+
+    mouse {
+        // off
+        // natural-scroll
+        // accel-speed 0.2
+        // accel-profile "flat"
+        // scroll-method "no-scroll"
+    }
+
+    trackpoint {
+        // off
+        // natural-scroll
+        // accel-speed 0.2
+        // accel-profile "flat"
+        // scroll-method "on-button-down"
+        // scroll-button 273
+        // scroll-button-lock
+        // middle-emulation
+    }
+
+    // Uncomment this to make the mouse warp to the center of newly focused windows.
+    // warp-mouse-to-focus
+
+    // Focus windows and outputs automatically when moving the mouse into them.
+    // Setting max-scroll-amount="0%" makes it work only on windows already fully on screen.
+    // focus-follows-mouse max-scroll-amount="0%"
+}
+
+// You can configure outputs by their name, which you can find
+// by running `niri msg outputs` while inside a niri instance.
+// The built-in laptop monitor is usually called "eDP-1".
+// Find more information on the wiki:
+// https://niri-wm.github.io/niri/Configuration:-Outputs
+// Remember to uncomment the node by removing "/-"!
+/-output "eDP-1" {
+    // Uncomment this line to disable this output.
+    // off
+
+    // Resolution and, optionally, refresh rate of the output.
+    // The format is "<width>x<height>" or "<width>x<height>@<refresh rate>".
+    // If the refresh rate is omitted, niri will pick the highest refresh rate
+    // for the resolution.
+    // If the mode is omitted altogether or is invalid, niri will pick one automatically.
+    // Run `niri msg outputs` while inside a niri instance to list all outputs and their modes.
+    mode "1920x1080@120.030"
+
+    // You can use integer or fractional scale, for example use 1.5 for 150% scale.
+    scale 2
+
+    // Transform allows to rotate the output counter-clockwise, valid values are:
+    // normal, 90, 180, 270, flipped, flipped-90, flipped-180 and flipped-270.
+    transform "normal"
+
+    // Position of the output in the global coordinate space.
+    // This affects directional monitor actions like "focus-monitor-left", and cursor movement.
+    // The cursor can only move between directly adjacent outputs.
+    // Output scale and rotation has to be taken into account for positioning:
+    // outputs are sized in logical, or scaled, pixels.
+    // For example, a 3840×2160 output with scale 2.0 will have a logical size of 1920×1080,
+    // so to put another output directly adjacent to it on the right, set its x to 1920.
+    // If the position is unset or results in an overlap, the output is instead placed
+    // automatically.
+    position x=1280 y=0
+}
+
+// Settings that influence how windows are positioned and sized.
+// Find more information on the wiki:
+// https://niri-wm.github.io/niri/Configuration:-Layout
+layout {
+    // Set gaps around windows in logical pixels.
+    gaps 8
+
+    // When to center a column when changing focus, options are:
+    // - "never", default behavior, focusing an off-screen column will keep at the left
+    //   or right edge of the screen.
+    // - "always", the focused column will always be centered.
+    // - "on-overflow", focusing a column will center it if it doesn't fit
+    //   together with the previously focused column.
+    center-focused-column "never"
+
+    // You can customize the widths that "switch-preset-column-width" (Mod+R) toggles between.
+    preset-column-widths {
+        // Proportion sets the width as a fraction of the output width, taking gaps into account.
+        // For example, you can perfectly fit four windows sized "proportion 0.25" on an output.
+        // The default preset widths are 1/3, 1/2 and 2/3 of the output.
+        proportion 0.33333
+        proportion 0.5
+        proportion 0.66667
+
+        // Fixed sets the width in logical pixels exactly.
+        // fixed 1920
+    }
+
+    // You can also customize the heights that "switch-preset-window-height" (Mod+Ctrl+Shift+R) toggles between.
+    // preset-window-heights { }
+
+    // You can change the default width of the new windows.
+    default-column-width { proportion 0.5; }
+    // If you leave the brackets empty, the windows themselves will decide their initial width.
+    // default-column-width {}
+
+    // By default focus ring and border are rendered as a solid background rectangle
+    // behind windows. That is, they will show up through semitransparent windows.
+    // This is because windows using client-side decorations can have an arbitrary shape.
+    //
+    // If you don't like that, you should uncomment `prefer-no-csd` below.
+    // Niri will draw focus ring and border *around* windows that agree to omit their
+    // client-side decorations.
+    //
+    // Alternatively, you can override it with a window rule called
+    // `draw-border-with-background`.
+
+    // You can change how the focus ring looks.
+    focus-ring {
+        // Uncomment this line to disable the focus ring.
+        // off
+
+        // How many logical pixels the ring extends out from the windows.
+        width 4
+
+        // Colors can be set in a variety of ways:
+        // - CSS named colors: "red"
+        // - RGB hex: "#rgb", "#rgba", "#rrggbb", "#rrggbbaa"
+        // - CSS-like notation: "rgb(255, 127, 0)", rgba(), hsl() and a few others.
+
+        // Color of the ring on the active monitor.
+        active-color "#7fc8ff"
+
+        // Color of the ring on inactive monitors.
+        //
+        // The focus ring only draws around the active window, so the only place
+        // where you can see its inactive-color is on other monitors.
+        inactive-color "#505050"
+
+        // You can also use gradients. They take precedence over solid colors.
+        // Gradients are rendered the same as CSS linear-gradient(angle, from, to).
+        // The angle is the same as in linear-gradient, and is optional,
+        // defaulting to 180 (top-to-bottom gradient).
+        // You can use any CSS linear-gradient tool on the web to set these up.
+        // Changing the color space is also supported, check the wiki for more info.
+        //
+        // active-gradient from="#80c8ff" to="#c7ff7f" angle=45
+
+        // You can also color the gradient relative to the entire view
+        // of the workspace, rather than relative to just the window itself.
+        // To do that, set relative-to="workspace-view".
+        //
+        // inactive-gradient from="#505050" to="#808080" angle=45 relative-to="workspace-view"
+    }
+
+    // You can also add a border. It's similar to the focus ring, but always visible.
+    border {
+        // The settings are the same as for the focus ring.
+        // If you enable the border, you probably want to disable the focus ring.
+        off
+
+        width 4
+        active-color "#ffc87f"
+        inactive-color "#505050"
+
+        // Color of the border around windows that request your attention.
+        urgent-color "#9b0000"
+
+        // Gradients can use a few different interpolation color spaces.
+        // For example, this is a pastel rainbow gradient via in="oklch longer hue".
+        //
+        // active-gradient from="#e5989b" to="#ffb4a2" angle=45 relative-to="workspace-view" in="oklch longer hue"
+
+        // inactive-gradient from="#505050" to="#808080" angle=45 relative-to="workspace-view"
+    }
+
+    // You can enable drop shadows for windows.
+    shadow {
+        // Uncomment the next line to enable shadows.
+        // on
+
+        // By default, the shadow draws only around its window, and not behind it.
+        // Uncomment this setting to make the shadow draw behind its window.
+        //
+        // Note that niri has no way of knowing about the CSD window corner
+        // radius. It has to assume that windows have square corners, leading to
+        // shadow artifacts inside the CSD rounded corners. This setting fixes
+        // those artifacts.
+        //
+        // However, instead you may want to set prefer-no-csd and/or
+        // geometry-corner-radius. Then, niri will know the corner radius and
+        // draw the shadow correctly, without having to draw it behind the
+        // window. These will also remove client-side shadows if the window
+        // draws any.
+        //
+        // draw-behind-window true
+
+        // You can change how shadows look. The values below are in logical
+        // pixels and match the CSS box-shadow properties.
+
+        // Softness controls the shadow blur radius.
+        softness 30
+
+        // Spread expands the shadow.
+        spread 5
+
+        // Offset moves the shadow relative to the window.
+        offset x=0 y=5
+
+        // You can also change the shadow color and opacity.
+        color "#0007"
+    }
+
+    // Struts shrink the area occupied by windows, similarly to layer-shell panels.
+    // You can think of them as a kind of outer gaps. They are set in logical pixels.
+    // Left and right struts will cause the next window to the side to always be visible.
+    // Top and bottom struts will simply add outer gaps in addition to the area occupied by
+    // layer-shell panels and regular gaps.
+    struts {
+        // left 64
+        // right 64
+        // top 64
+        // bottom 64
+    }
+}
+
+// Add lines like this to spawn processes at startup.
+// Note that running niri as a session supports xdg-desktop-autostart,
+// which may be more convenient to use.
+// See the binds section below for more spawn examples.
+
+// This line starts waybar, a commonly used bar for Wayland compositors.
+spawn-at-startup "noctalia"
+spawn-at-startup "xwayland-satellite"
+
+// To run a shell command (with variables, pipes, etc.), use spawn-sh-at-startup:
+// spawn-sh-at-startup "qs -c ~/source/qs/MyAwesomeShell"
+
+hotkey-overlay {
+    // Uncomment this line to disable the "Important Hotkeys" pop-up at startup.
+    skip-at-startup
+}
+
+// Uncomment this line to ask the clients to omit their client-side decorations if possible.
+// If the client will specifically ask for CSD, the request will be honored.
+// Additionally, clients will be informed that they are tiled, removing some client-side rounded corners.
+// This option will also fix border/focus ring drawing behind some semitransparent windows.
+// After enabling or disabling this, you need to restart the apps for this to take effect.
+// prefer-no-csd
+
+// You can change the path where screenshots are saved.
+// A ~ at the front will be expanded to the home directory.
+// The path is formatted with strftime(3) to give you the screenshot date and time.
+screenshot-path "~/Pictures/Screenshots/Screenshot from %Y-%m-%d %H-%M-%S.png"
+
+// You can also set this to null to disable saving screenshots to disk.
+// screenshot-path null
+
+// Animation settings.
+// The wiki explains how to configure individual animations:
+// https://niri-wm.github.io/niri/Configuration:-Animations
+animations {
+    // Uncomment to turn off all animations.
+    // off
+
+    // Slow down all animations by this factor. Values below 1 speed them up instead.
+    slowdown 0.5
+}
+
+// Window rules let you adjust behavior for individual windows.
+// Find more information on the wiki:
+// https://niri-wm.github.io/niri/Configuration:-Window-Rules
+
+// Work around WezTerm's initial configure bug
+// by setting an empty default-column-width.
+window-rule {
+    // This regular expression is intentionally made as specific as possible,
+    // since this is the default config, and we want no false positives.
+    // You can get away with just app-id="wezterm" if you want.
+    match app-id=r#"^org\.wezfurlong\.wezterm$"#
+    default-column-width {}
+}
+
+// Open the Firefox picture-in-picture player as floating by default.
+window-rule {
+    // This app-id regular expression will work for both:
+    // - host Firefox (app-id is "firefox")
+    // - Flatpak Firefox (app-id is "org.mozilla.firefox")
+    match app-id=r#"firefox$"# title="^Picture-in-Picture$"
+    open-floating true
+}
+
+// Example: block out two password managers from screen capture.
+// (This example rule is commented out with a "/-" in front.)
+/-window-rule {
+    match app-id=r#"^org\.keepassxc\.KeePassXC$"#
+    match app-id=r#"^org\.gnome\.World\.Secrets$"#
+
+    block-out-from "screen-capture"
+
+    // Use this instead if you want them visible on third-party screenshot tools.
+    // block-out-from "screencast"
+}
+
+// Example: enable rounded corners for all windows.
+// (This example rule is commented out with a "/-" in front.)
+/-window-rule {
+    geometry-corner-radius 12
+    clip-to-geometry true
+}
+
+binds {
+    // Keys consist of modifiers separated by + signs, followed by an XKB key name
+    // in the end. To find an XKB name for a particular key, you may use a program
+    // like wev.
+    //
+    // "Mod" is a special modifier equal to Super when running on a TTY, and to Alt
+    // when running as a winit window.
+    //
+    // Most actions that you can bind here can also be invoked programmatically with
+    // `niri msg action do-something`.
+
+    // Mod-Shift-/, which is usually the same as Mod-?,
+    // shows a list of important hotkeys.
+    Mod+Shift+Slash { show-hotkey-overlay; }
+
+    // Suggested binds for running programs: terminal, app launcher, screen locker.
+    Mod+T hotkey-overlay-title="Open a Terminal: ghostty" { spawn "ghostty"; }
+    Mod+Space hotkey-overlay-title="Noctalia: Launcher"       { spawn "noctalia-ipc" "panel-toggle" "launcher"; }
+    Mod+S     hotkey-overlay-title="Noctalia: Control Center" { spawn "noctalia-ipc" "panel-toggle" "control-center"; }
+    Super+Alt+L hotkey-overlay-title="Noctalia: Lock" { spawn "noctalia-ipc" "session" "lock"; }
+
+    // Use spawn-sh to run a shell command. Do this if you need pipes, multiple commands, etc.
+    // Note: the entire command goes as a single argument. It's passed verbatim to `sh -c`.
+    // For example, this is a standard bind to toggle the screen reader (orca).
+    Super+Alt+S allow-when-locked=true hotkey-overlay-title=null { spawn-sh "pkill orca || exec orca"; }
+
+    // Example volume keys mappings for PipeWire & WirePlumber.
+    // The allow-when-locked=true property makes them work even when the session is locked.
+    // Using spawn-sh allows to pass multiple arguments together with the command.
+    // "-l 1.0" limits the volume to 100%.
+    XF86AudioRaiseVolume allow-when-locked=true { spawn-sh "wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.1+ -l 1.0"; }
+    XF86AudioLowerVolume allow-when-locked=true { spawn-sh "wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.1-"; }
+    XF86AudioMute        allow-when-locked=true { spawn-sh "wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle"; }
+    XF86AudioMicMute     allow-when-locked=true { spawn-sh "wpctl set-mute @DEFAULT_AUDIO_SOURCE@ toggle"; }
+
+    // Example media keys mapping using playerctl.
+    // This will work with any MPRIS-enabled media player.
+    XF86AudioPlay        allow-when-locked=true { spawn-sh "playerctl play-pause"; }
+    XF86AudioStop        allow-when-locked=true { spawn-sh "playerctl stop"; }
+    XF86AudioPrev        allow-when-locked=true { spawn-sh "playerctl previous"; }
+    XF86AudioNext        allow-when-locked=true { spawn-sh "playerctl next"; }
+
+    // Example brightness key mappings for brightnessctl.
+    // You can use regular spawn with multiple arguments too (to avoid going through "sh"),
+    // but you need to manually put each argument in separate "" quotes.
+    XF86MonBrightnessUp allow-when-locked=true { spawn "brightnessctl" "--class=backlight" "set" "+10%"; }
+    XF86MonBrightnessDown allow-when-locked=true { spawn "brightnessctl" "--class=backlight" "set" "10%-"; }
+
+    // Open/close the Overview: a zoomed-out view of workspaces and windows.
+    // You can also move the mouse into the top-left hot corner,
+    // or do a four-finger swipe up on a touchpad.
+    Mod+O repeat=false { toggle-overview; }
+
+    Mod+Shift+Q repeat=false { close-window; }
+
+    Mod+Left  { focus-column-left; }
+    Mod+Down  { focus-window-down; }
+    Mod+Up    { focus-window-up; }
+    Mod+Right { focus-column-right; }
+    Mod+H     { focus-column-left; }
+    Mod+J     { focus-window-down; }
+    Mod+K     { focus-window-up; }
+    Mod+L     { focus-column-right; }
+
+    Mod+Ctrl+Left  { move-column-left; }
+    Mod+Ctrl+Down  { move-window-down; }
+    Mod+Ctrl+Up    { move-window-up; }
+    Mod+Ctrl+Right { move-column-right; }
+    Mod+Ctrl+H     { move-column-left; }
+    Mod+Ctrl+J     { move-window-down; }
+    Mod+Ctrl+K     { move-window-up; }
+    Mod+Ctrl+L     { move-column-right; }
+
+    // Alternative commands that move across workspaces when reaching
+    // the first or last window in a column.
+    // Mod+J     { focus-window-or-workspace-down; }
+    // Mod+K     { focus-window-or-workspace-up; }
+    // Mod+Ctrl+J     { move-window-down-or-to-workspace-down; }
+    // Mod+Ctrl+K     { move-window-up-or-to-workspace-up; }
+
+    Mod+Home { focus-column-first; }
+    Mod+End  { focus-column-last; }
+    Mod+Ctrl+Home { move-column-to-first; }
+    Mod+Ctrl+End  { move-column-to-last; }
+
+
+    Mod+Shift+Ctrl+Left  { move-column-to-monitor-left; }
+    Mod+Shift+Ctrl+Down  { move-column-to-monitor-down; }
+    Mod+Shift+Ctrl+Up    { move-column-to-monitor-up; }
+    Mod+Shift+Ctrl+Right { move-column-to-monitor-right; }
+    Mod+Shift+Ctrl+H     { move-column-to-monitor-left; }
+    Mod+Shift+Ctrl+J     { move-column-to-monitor-down; }
+    Mod+Shift+Ctrl+K     { move-column-to-monitor-up; }
+    Mod+Shift+Ctrl+L     { move-column-to-monitor-right; }
+
+    // Alternatively, there are commands to move just a single window:
+    // Mod+Shift+Ctrl+Left  { move-window-to-monitor-left; }
+    // ...
+
+    // And you can also move a whole workspace to another monitor:
+    // Mod+Shift+Ctrl+Left  { move-workspace-to-monitor-left; }
+    // ...
+
+    Mod+Page_Down      { focus-workspace-down; }
+    Mod+Page_Up        { focus-workspace-up; }
+    Mod+U              { focus-workspace-down; }
+    Mod+I              { focus-workspace-up; }
+    Mod+Ctrl+Page_Down { move-column-to-workspace-down; }
+    Mod+Ctrl+Page_Up   { move-column-to-workspace-up; }
+    Mod+Ctrl+U         { move-column-to-workspace-down; }
+    Mod+Ctrl+I         { move-column-to-workspace-up; }
+
+    // Alternatively, there are commands to move just a single window:
+    // Mod+Ctrl+Page_Down { move-window-to-workspace-down; }
+    // ...
+
+    Mod+Shift+Page_Down { move-workspace-down; }
+    Mod+Shift+Page_Up   { move-workspace-up; }
+    Mod+Shift+U         { move-workspace-down; }
+    Mod+Shift+I         { move-workspace-up; }
+
+    // You can bind mouse wheel scroll ticks using the following syntax.
+    // These binds will change direction based on the natural-scroll setting.
+    //
+    // To avoid scrolling through workspaces really fast, you can use
+    // the cooldown-ms property. The bind will be rate-limited to this value.
+    // You can set a cooldown on any bind, but it's most useful for the wheel.
+    Mod+WheelScrollDown      cooldown-ms=150 { focus-workspace-down; }
+    Mod+WheelScrollUp        cooldown-ms=150 { focus-workspace-up; }
+    Mod+Ctrl+WheelScrollDown cooldown-ms=150 { move-column-to-workspace-down; }
+    Mod+Ctrl+WheelScrollUp   cooldown-ms=150 { move-column-to-workspace-up; }
+
+    Mod+WheelScrollRight      { focus-column-right; }
+    Mod+WheelScrollLeft       { focus-column-left; }
+    Mod+Ctrl+WheelScrollRight { move-column-right; }
+    Mod+Ctrl+WheelScrollLeft  { move-column-left; }
+
+    // Usually scrolling up and down with Shift in applications results in
+    // horizontal scrolling; these binds replicate that.
+    Mod+Shift+WheelScrollDown      { focus-column-right; }
+    Mod+Shift+WheelScrollUp        { focus-column-left; }
+    Mod+Ctrl+Shift+WheelScrollDown { move-column-right; }
+    Mod+Ctrl+Shift+WheelScrollUp   { move-column-left; }
+
+    // Similarly, you can bind touchpad scroll "ticks".
+    // Touchpad scrolling is continuous, so for these binds it is split into
+    // discrete intervals.
+    // These binds are also affected by touchpad's natural-scroll, so these
+    // example binds are "inverted", since we have natural-scroll enabled for
+    // touchpads by default.
+    // Mod+TouchpadScrollDown { spawn-sh "wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.02+"; }
+    // Mod+TouchpadScrollUp   { spawn-sh "wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.02-"; }
+
+    // You can refer to workspaces by index. However, keep in mind that
+    // niri is a dynamic workspace system, so these commands are kind of
+    // "best effort". Trying to refer to a workspace index bigger than
+    // the current workspace count will instead refer to the bottommost
+    // (empty) workspace.
+    //
+    // For example, with 2 workspaces + 1 empty, indices 3, 4, 5 and so on
+    // will all refer to the 3rd workspace.
+    Mod+1 { focus-workspace 1; }
+    Mod+2 { focus-workspace 2; }
+    Mod+3 { focus-workspace 3; }
+    Mod+4 { focus-workspace 4; }
+    Mod+5 { focus-workspace 5; }
+    Mod+6 { focus-workspace 6; }
+    Mod+7 { focus-workspace 7; }
+    Mod+8 { focus-workspace 8; }
+    Mod+9 { focus-workspace 9; }
+    Mod+Ctrl+1 { move-column-to-workspace 1; }
+    Mod+Ctrl+2 { move-column-to-workspace 2; }
+    Mod+Ctrl+3 { move-column-to-workspace 3; }
+    Mod+Ctrl+4 { move-column-to-workspace 4; }
+    Mod+Ctrl+5 { move-column-to-workspace 5; }
+    Mod+Ctrl+6 { move-column-to-workspace 6; }
+    Mod+Ctrl+7 { move-column-to-workspace 7; }
+    Mod+Ctrl+8 { move-column-to-workspace 8; }
+    Mod+Ctrl+9 { move-column-to-workspace 9; }
+
+    // Alternatively, there are commands to move just a single window:
+    // Mod+Ctrl+1 { move-window-to-workspace 1; }
+
+    // Switches focus between the current and the previous workspace.
+    // Mod+Tab { focus-workspace-previous; }
+
+    // The following binds move the focused window in and out of a column.
+    // If the window is alone, they will consume it into the nearby column to the side.
+    // If the window is already in a column, they will expel it out.
+    Mod+BracketLeft  { consume-or-expel-window-left; }
+    Mod+BracketRight { consume-or-expel-window-right; }
+
+    // Consume one window from the right to the bottom of the focused column.
+    Mod+Comma  { consume-window-into-column; }
+    // Expel the bottom window from the focused column to the right.
+    Mod+Period { expel-window-from-column; }
+
+    // Cycle through widths set in preset-column-widths.
+    Mod+R { switch-preset-column-width; }
+    // Cycling through the presets in reverse order is also possible.
+    Mod+Shift+R { switch-preset-column-width-back; }
+
+    Mod+Ctrl+Shift+R { switch-preset-window-height; }
+    Mod+Ctrl+R { reset-window-height; }
+
+    Mod+F { maximize-column; }
+    Mod+Shift+F { fullscreen-window; }
+
+    // While maximize-column leaves gaps and borders around the window,
+    // maximize-window-to-edges doesn't: the window expands to the edges of the screen.
+    // This bind corresponds to normal window maximizing,
+    // e.g. by double-clicking on the titlebar.
+    Mod+M { maximize-window-to-edges; }
+
+    // Expand the focused column to space not taken up by other fully visible columns.
+    // Makes the column "fill the rest of the space".
+    Mod+Ctrl+F { expand-column-to-available-width; }
+
+    Mod+C { center-column; }
+
+    // Center all fully visible columns on screen.
+    Mod+Ctrl+C { center-visible-columns; }
+
+    // Finer width adjustments.
+    // This command can also:
+    // * set width in pixels: "1000"
+    // * adjust width in pixels: "-5" or "+5"
+    // * set width as a percentage of screen width: "25%"
+    // * adjust width as a percentage of screen width: "-10%" or "+10%"
+    // Pixel sizes use logical, or scaled, pixels. I.e. on an output with scale 2.0,
+    // set-column-width "100" will make the column occupy 200 physical screen pixels.
+    Mod+Minus { set-column-width "-10%"; }
+    Mod+Equal { set-column-width "+10%"; }
+
+    // Finer height adjustments when in column with other windows.
+    Mod+Shift+Minus { set-window-height "-10%"; }
+    Mod+Shift+Equal { set-window-height "+10%"; }
+
+    // Move the focused window between the floating and the tiling layout.
+    Mod+V       { toggle-window-floating; }
+    Mod+Shift+V { switch-focus-between-floating-and-tiling; }
+
+    // Toggle tabbed column display mode.
+    // Windows in this column will appear as vertical tabs,
+    // rather than stacked on top of each other.
+    Mod+W { toggle-column-tabbed-display; }
+
+    // Actions to switch layouts.
+    // Note: if you uncomment these, make sure you do NOT have
+    // a matching layout switch hotkey configured in xkb options above.
+    // Having both at once on the same hotkey will break the switching,
+    // since it will switch twice upon pressing the hotkey (once by xkb, once by niri).
+    // Mod+Space       { switch-layout "next"; }
+    // Mod+Shift+Space { switch-layout "prev"; }
+
+    Print { screenshot; }
+    Ctrl+Print { screenshot-screen; }
+    Alt+Print { screenshot-window; }
+
+    // Applications such as remote-desktop clients and software KVM switches may
+    // request that niri stops processing the keyboard shortcuts defined here
+    // so they may, for example, forward the key presses as-is to a remote machine.
+    // It's a good idea to bind an escape hatch to toggle the inhibitor,
+    // so a buggy application can't hold your session hostage.
+    //
+    // The allow-inhibiting=false property can be applied to other binds as well,
+    // which ensures niri always processes them, even when an inhibitor is active.
+    Mod+Escape allow-inhibiting=false { toggle-keyboard-shortcuts-inhibit; }
+
+    // The quit action will show a confirmation dialog to avoid accidental exits.
+    Mod+Shift+E { quit; }
+    Ctrl+Alt+Delete { quit; }
+
+    // Powers off the monitors. To turn them back on, do any input like
+    // moving the mouse or pressing any other key.
+    Mod+Shift+P { power-off-monitors; }
+
+    // ── Move window: Mod+Shift+HJKL / Arrow ──────────────────────────────
+    Mod+Shift+H     { move-column-left; }
+    Mod+Shift+L     { move-column-right; }
+    Mod+Shift+K     { move-window-up; }
+    Mod+Shift+J     { move-window-down; }
+    Mod+Shift+Left  { move-column-left; }
+    Mod+Shift+Right { move-column-right; }
+    Mod+Shift+Up    { move-window-up; }
+    Mod+Shift+Down  { move-window-down; }
+
+    // ── Move window to workspace: Mod+Shift+1-9 ──────────────────────────
+    Mod+Shift+1 { move-column-to-workspace 1; }
+    Mod+Shift+2 { move-column-to-workspace 2; }
+    Mod+Shift+3 { move-column-to-workspace 3; }
+    Mod+Shift+4 { move-column-to-workspace 4; }
+    Mod+Shift+5 { move-column-to-workspace 5; }
+    Mod+Shift+6 { move-column-to-workspace 6; }
+    Mod+Shift+7 { move-column-to-workspace 7; }
+    Mod+Shift+8 { move-column-to-workspace 8; }
+    Mod+Shift+9 { move-column-to-workspace 9; }
+}
+
+// ── Prefer no client-side decorations ────────────────────────────────────
+prefer-no-csd
+
+// ── Gestures ─────────────────────────────────────────────────────────────
+gestures {
+    hot-corners {
+        off
+    }
+}
+
+// ── Rounded corners ──────────────────────────────────────────────────────
+window-rule {
+    geometry-corner-radius 12
+    clip-to-geometry true
+}
+
+// ── Noctalia: disable background-blur on bar layer to prevent seam ──────
+layer-rule {
+    match namespace="noctalia"
+    background-effect {
+        blur false
+    }
+}
+
+// ── Floating windows ─────────────────────────────────────────────────────
+window-rule {
+    match app-id=r#"^Tk$"#
+    match app-id=r#"^gimp$"# title=r#"Preferences"#
+    match app-id=r#"^mpv$"#
+    match app-id=r#"^soffice$"# title=r#"^Text Import"#
+    match app-id=r#"^thunar$"# title=r#"^Rename "#
+    match app-id=r#"^xarchiver$"#
+    match app-id=r#"firefox$"# title=r#"^Picture-in-Picture$"#
+
+    open-floating true
+}
+
+window-rule {
+    match app-id="zen"
+    open-on-workspace "2"
+}

home/modules/niri/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  imports = [ ./noctalia ./polkit ];
+
+  # .text writes a real file (not a nix-store symlink) so niri auto-reloads on rebuild
+  xdg.configFile."niri/config.kdl".text = builtins.readFile ./config.kdl;
+}

home/modules/niri/noctalia/default.nix

@@ -0,0 +1,135 @@
+{ config, inputs, pkgs, ... }:
+let
+  # Repo wallpapers are symlinked to ~/.config/wallpapers by xdg.configFile below
+  wallpaperDir     = "${config.home.homeDirectory}/.config/wallpapers";
+  defaultWallpaper = "${wallpaperDir}/even-in-arcadia.png";
+
+  noctaliaIpc = pkgs.writeShellScriptBin "noctalia-ipc" ''
+    set -eu
+    exec noctalia msg "$@"
+  '';
+in
+{
+  imports = [ inputs.noctalia.homeModules.default ];
+
+  home.packages = [ noctaliaIpc ];
+
+  # Wallpapers tracked in the repo; symlinked to ~/.config/wallpapers for noctalia
+  xdg.configFile."wallpapers".source = ./wallpapers;
+
+  programs.noctalia = {
+    enable = true;
+    settings = {
+
+      bar.default = {
+        start                = [ "launcher" "clipboard" "volume" "brightness" "active_window" ];
+        center               = [ "workspaces" ];
+        end                  = [ "network" "sysmon" "battery" "notifications" "clock" "session" ];
+        thickness            = 35;
+        padding              = 17;
+        radius               = 17;
+        margin_edge          = 5;
+        margin_ends          = 5;
+        margin_opposite_edge = 5;
+        widget_spacing       = 15;
+        background_opacity   = 0.9;
+        border               = "outline";
+        capsule              = true;
+        capsule_fill         = "surface_variant";
+        capsule_opacity      = 1.0;
+        capsule_padding      = 6.0;
+        capsule_thickness    = 0.76;
+        contact_shadow       = true;
+        panel_overlap        = 1;
+        shadow               = true;
+        hover_highlight      = true;
+        concave_edge_corners = true;
+
+        # cpu + ram rendered as one capsule labelled "sysmon"
+        capsule_group = [
+          {
+            id      = "sysmon";
+            members = [ "cpu" "ram" ];
+            fill    = "surface_variant";
+            opacity = 1.0;
+            padding = 6.0;
+          }
+        ];
+      };
+
+      dock = {
+        enabled              = true;
+        # Desktop entry IDs (filename without .desktop)
+        pinned               = [ "zen" "codium" "ghostty" "thunar" "claude-desktop" ];
+        position             = "bottom";
+        smart_auto_hide      = true;
+        icon_size            = 20;
+        radius               = 15;
+        show_dots            = true;
+        show_running         = true;
+        show_instance_count  = true;
+        magnification        = true;
+        magnification_scale  = 1.35;
+        background_opacity   = 1.0;
+        border               = "outline";
+        concave_edge_corners = true;
+        shadow               = true;
+        main_axis_padding    = 20;
+        cross_axis_padding   = 10;
+        item_spacing         = 5;
+        inactive_opacity     = 0.85;
+        inactive_scale       = 0.85;
+      };
+
+      idle = {
+        # screen turns off first, then locks after
+        behavior_order = [ "screen-off" "lock" ];
+        behavior = {
+          screen-off = {
+            action  = "screen_off";
+            enabled = true;
+            timeout = 300;   # 5 min
+          };
+          lock = {
+            action  = "lock";
+            enabled = true;
+            timeout = 600;   # 10 min
+          };
+        };
+      };
+
+      lockscreen.wallpaper = defaultWallpaper;
+
+      nightlight.enabled = true;
+
+      osd.position = "top_right";
+
+      shell = {
+        font_family         = "JetBrainsMono Nerd Font";
+        polkit_agent        = true;
+        corner_radius_scale = 1.0;
+        animation.speed     = 2.0;
+        panel = {
+          clipboard_placement = "attached";
+          launcher_placement  = "attached";
+        };
+        shadow.alpha = 0.5;
+      };
+
+      # Theme follows wallpaper colours (Catppuccin palette, muted scheme, dark mode)
+      theme = {
+        builtin          = "Catppuccin";
+        source           = "wallpaper";
+        mode             = "dark";
+        wallpaper_scheme = "muted";
+      };
+
+      wallpaper = {
+        enabled      = true;
+        directory    = wallpaperDir;
+        default.path = defaultWallpaper;
+      };
+
+    };
+  };
+}

home/modules/niri/polkit/default.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.kdePackages.polkit-kde-agent-1 ];
+
+  systemd.user.services.polkit-kde-agent = {
+    Unit = {
+      Description = "KDE Polkit Authentication Agent";
+      PartOf      = [ "graphical-session.target" ];
+      After       = [ "graphical-session.target" ];
+    };
+    Service = {
+      ExecStart  = "${pkgs.kdePackages.polkit-kde-agent-1}/libexec/polkit-kde-authentication-agent-1";
+      Restart    = "on-failure";
+      RestartSec = 1;
+    };
+    Install.WantedBy = [ "graphical-session.target" ];
+  };
+}

hosts/nixos/configuration.nix

@@ -26,20 +26,19 @@
     fcitx5.addons = with pkgs; [
       qt6Packages.fcitx5-unikey
       fcitx5-gtk
-      fcitx5-configtool
     ];
   };
 
   i18n.extraLocaleSettings = {
-    LC_ADDRESS = "vi_VN";
+    LC_ADDRESS        = "en_US.UTF-8";
-    LC_IDENTIFICATION = "vi_VN";
+    LC_IDENTIFICATION = "en_US.UTF-8";
-    LC_MEASUREMENT = "vi_VN";
+    LC_MEASUREMENT    = "en_US.UTF-8";
-    LC_MONETARY = "vi_VN";
+    LC_MONETARY       = "en_US.UTF-8";
-    LC_NAME = "vi_VN";
+    LC_NAME           = "en_US.UTF-8";
-    LC_NUMERIC = "vi_VN";
+    LC_NUMERIC        = "en_US.UTF-8";
-    LC_PAPER = "vi_VN";
+    LC_PAPER          = "en_US.UTF-8";
-    LC_TELEPHONE = "vi_VN";
+    LC_TELEPHONE      = "en_US.UTF-8";
-    LC_TIME = "vi_VN";
+    LC_TIME           = "en_US.UTF-8";
   };
 
   services.xserver.enable = true;
@@ -65,6 +64,7 @@
   users.users.duynguyen = {
     isNormalUser = true;
     description = "duynguyen";
+    shell = pkgs.zsh;
     extraGroups = [ "networkmanager" "wheel" ];
     packages = with pkgs; [
       kdePackages.kate
@@ -72,12 +72,72 @@
   };
 
   programs.firefox.enable = true;
+  programs.niri.enable = true;
+  programs.zsh.enable = true;
+  programs.fish.enable = true;
+
+  # Power management (TLP conflicts with power-profiles-daemon which Plasma enables
+  # by default, so explicitly disable it)
+  services.power-profiles-daemon.enable = false;
+  services.tlp.enable = true;
+  services.upower.enable = true;
+
+  # ddcutil: control external monitor brightness/contrast over DDC/CI
+  boot.kernelModules = [ "i2c-dev" ];
+  hardware.i2c.enable = true;
+
+  security.polkit.enable = true;
+
+  fonts.packages = with pkgs; [
+    freefont_ttf
+    noto-fonts-color-emoji
+    font-awesome
+    nerd-fonts.jetbrains-mono
+  ];
+
+  hardware.bluetooth.enable = true;
+  services.blueman.enable = true;
+
+  xdg.portal = {
+    enable = true;
+    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+  };
 
   nixpkgs.config.allowUnfree = true;
 
+  # Run prebuilt/foreign dynamically-linked Linux binaries (e.g. games)
+  # that expect a standard FHS-style dynamic linker.
+  programs.nix-ld.enable = true;
+  programs.nix-ld.libraries = with pkgs; [
+    stdenv.cc.cc.lib
+    zlib
+    openssl
+    curl
+    libGL
+    libglvnd
+    glib
+    fontconfig
+    freetype
+    alsa-lib
+
+    # SDL2 windowing backends (Wayland + XWayland fallback) — needed for
+    # prebuilt games (e.g. Ren'Py) to open a window at all.
+    wayland
+    libxkbcommon
+    libdecor
+    xorg.libX11
+    xorg.libXext
+    xorg.libXcursor
+    xorg.libXi
+    xorg.libXfixes
+    xorg.libXrandr
+    xorg.libXScrnSaver
+  ];
+
   environment.systemPackages = with pkgs; [
     claude-code
     git
+    chromium
   ];
 
   services.openssh = {