configs/nixos/modules/desktop/session/hyprland/default.nix

@@ -8,18 +8,56 @@
   options.modules.desktop.session.hyprland.enable = lib.mkEnableOption "the Hyprland compositor";
 
   config = lib.mkIf config.modules.desktop.session.hyprland.enable {
-    registry.keybind.${config.networking.hostName} = lib.listToAttrs (
+    registry.keybind.${config.networking.hostName} = lib.mkMerge [
+      # Generate numeric workspace keybinds.
+      (lib.listToAttrs (
         map (workspace: {
           name = "hyprland-workspace-${toString workspace}";
           value = {
             keys = "SUPER + ${toString workspace}";
             action = {
-            kind = "focus-workspace";
+              kind = "focus";
               inherit workspace;
             };
           };
         }) (lib.range 1 9)
-    );
+      ))
+      # Generate directional keybinds.
+      (lib.listToAttrs (
+        map
+          (
+            { direction, key }:
+            {
+              name = "hyprland-focus-${direction}";
+              value = {
+                keys = "SUPER + ${key}";
+                action = {
+                  kind = "focus";
+                  inherit direction;
+                };
+              };
+            }
+          )
+          [
+            {
+              key = "H";
+              direction = "left";
+            }
+            {
+              key = "J";
+              direction = "down";
+            }
+            {
+              key = "K";
+              direction = "up";
+            }
+            {
+              key = "L";
+              direction = "right";
+            }
+          ]
+      ))
+    ];
 
     # This program integration owns the session, portals, and polkit, launched
     # through the universal Wayland session manager.
@@ -53,8 +91,8 @@
             (lib.generators.mkLuaInline (
               {
                 exec = "hl.dsp.exec_cmd(${lib.generators.toLua { } keybind.action.command})";
-                "focus-workspace" = "hl.dsp.focus(${
-                  lib.generators.toLua { } { inherit (keybind.action) workspace; }
+                focus = "hl.dsp.focus(${
+                  lib.generators.toLua { } { inherit (keybind.action) direction workspace; }
                 })";
               }
               .${keybind.action.kind}

configs/nixos/registry/keybind.nix

@@ -11,7 +11,10 @@
         lib.all (
           entry:
           (entry.value.action.kind == "exec" && entry.value.action.command != null)
-          || (entry.value.action.kind == "focus-workspace" && entry.value.action.workspace != null)
+          || (
+            entry.value.action.kind == "focus"
+            && lib.xor (entry.value.action.direction != null) (entry.value.action.workspace != null)
+          )
         ) entries;
       message = "Desktop keybind actions must set the fields their kind requires.";
     }
@@ -33,7 +36,7 @@
               description = "Selects the keybind action kind.";
               type = lib.types.enum [
                 "exec"
-                "focus-workspace"
+                "focus"
               ];
             };
 
@@ -44,8 +47,22 @@
               example = "ghostty";
             };
 
+            direction = lib.mkOption {
+              description = "Direction focused by a focus keybind.";
+              type = lib.types.nullOr (
+                lib.types.enum [
+                  "down"
+                  "left"
+                  "right"
+                  "up"
+                ]
+              );
+              default = null;
+              example = "left";
+            };
+
             workspace = lib.mkOption {
-              description = "Workspace focused by a focus-workspace keybind.";
+              description = "Workspace focused by a focus keybind.";
               type = lib.types.nullOr lib.types.int;
               default = null;
               example = 1;