Example Niri config using KDL v2

config.kdl

input {
    touchpad {
        tap
        natural-scroll
    }

    mouse {
        // natural-scroll
        // accel-speed 0.2
        // accel-profile "flat"
    }

    tablet {
        // Set the name of the output (see below) which the tablet will map to.
        // If this is unset or the output doesn't exist, the tablet maps to one of the
        // existing outputs.
        map-to-output eDP-1
    }
}

output eDP-1 {
    scale 2.0
    transform normal
}

layout {
    focus-ring {
        width 2
        active-color 127 200 255 255
        inactive-color 80 80 80 255
    }

    border off {
        width 4
        active-color 255 200 127 255
        inactive-color 80 80 80 255
    }

    preset-column-widths {
        proportion 0.33333
        proportion 0.5
        proportion 0.66667
    }

    default-column-width { proportion 0.5 }
    gaps 16
    center-focused-column never
}

spawn-at-startup waybar
spawn-at-startup swaync
spawn-at-startup /usr/lib/polkit-kde-authentication-agent-1
spawn-at-startup wl-paste --type text --watch cliphist store
spawn-at-startup wl-paste --type image --watch cliphist store

spawn-at-startup swayidle timeout 300 "swaylock -f --clock --fade-in 1 --grace 30 --indicator-idle-visible &&\
                                         systemctl suspend" \
                          lock "swaylock -f --clock --fade-in 1" \
                          before-sleep "swaylock -f --clock --fade-in 1"

spawn-at-startup blueman-applet
spawn-at-startup trayscale --hide-window
spawn-at-startup rclone mount OneDrive: OneDrive
spawn-at-startup rclone mount isabelle:data isabelle --allow-non-empty
spawn-at-startup hyprpaper
spawn-at-startup wluma
spawn-at-startup udiskie --tray
spawn-at-startup 1password
spawn-at-startup firefox
spawn-at-startup code
spawn-at-startup discord
spawn-at-startup slack
spawn-at-startup element-desktop
spawn-at-startup signal-desktop

// 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 rounded corners.
// 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

// Settings for the "Important Hotkeys" overlay.
hotkey-overlay {
    // Uncomment this line if you don't want to see the hotkey help at niri startup.
    // skip-at-startup
}

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 { spawn kitty" }
    Mod Space { spawn tofi-drun "--drun-launch=true" }
    Mod L { spawn swaylock }
    Mod Shift Space { spawn bash -c "tofi-run --prompt-text=exec: --require-match=false | xargs hyprctl dispatch exec --" }
    Mod Shift Period { spawn emojimart }
    Mod A { spawn swaync-client -t -sw }
    Mod V { spawn bash -c "cliphist list | tofi | cliphist-decode | wl-copy" }

    // You can also use a shell:
    // Mod T { spawn bash -c "notify-send hello && exec alacritty" }

    // Example volume keys mappings for PipeWire & WirePlumber.
    XF86AudioRaiseVolume { spawn wpctl set-volume @DEFAULT_AUDIO_SINK@ "0.1+" }
    XF86AudioLowerVolume { spawn wpctl set-volume @DEFAULT_AUDIO_SINK@ "0.1-" }
    XF86AudioMute { spawn wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle }
    Shift XF86AudioRaiseVolume { spawn wpctl set-volume @DEFAULT_AUDIO_SOURCE@ "0.1+" }
    Shift XF86AudioLowerVolume { spawn wpctl set-volume @DEFAULT_AUDIO_SOURCE@ "0.1-" }
    Shift XF86AudioMute { spawn wpctl set-mute @DEFAULT_AUDIO_SOURCE@ toggle }
    XF86AudioPlay { spawn playerctl play-pause }
    XF86MonBrightnessDown { spawn brillo -q -U "5" }
    XF86MonBrightnessUp { spawn brillo -q -A "5" }

    Mod Q { 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 Left  { focus-monitor-left }
    Mod Shift Down  { focus-monitor-down }
    Mod Shift Up    { focus-monitor-up }
    Mod Shift Right { focus-monitor-right }
    Mod Shift H     { focus-monitor-left }
    Mod Shift J     { focus-monitor-down }
    Mod Shift K     { focus-monitor-up }
    Mod Shift L     { focus-monitor-right }

    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 }

    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 }

    Mod Comma  { consume-window-into-column }
    Mod Period { expel-window-from-column }

    // There are also commands that consume or expel a single window to the side.
    // Mod BracketLeft  { consume-or-expel-window-left }
    // Mod BracketRight { consume-or-expel-window-right }

    Mod R { switch-preset-column-width }
    Mod F { maximize-column }
    Mod Shift F { fullscreen-window }
    Mod C { center-column }

    // 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%" }

    // 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 }

    // The quit action will show a confirmation dialog to avoid accidental exits.
    // If you want to skip the confirmation dialog, set the flag like so:
    // Mod Shift E { quit skip-confirmation=true }
    Mod Shift E { quit }

    Mod Shift P { power-off-monitors }

    Mod Shift Ctrl T { toggle-debug-tint }
}

// Settings for debugging. Not meant for normal use.
// These can change or stop working at any point with little notice.
debug {
    // Make niri take over its DBus services even if it's not running as a session.
    // Useful for testing screen recording changes without having to relogin.
    // The main niri instance will *not* currently take back the services; so you will
    // need to relogin in the end.
    // dbus-interfaces-in-non-session-instances

    // Wait until every frame is done rendering before handing it over to DRM.
    // wait-for-frame-completion-before-queueing

    // Enable direct scanout into overlay planes.
    // May cause frame drops during some animations on some hardware.
    // enable-overlay-planes

    // Disable the use of the cursor plane.
    // The cursor will be rendered together with the rest of the frame.
    // disable-cursor-plane

    // Override the DRM device that niri will use for all rendering.
    // render-drm-device "/dev/dri/renderD129"
}