Rename vrKeyboard to steamKeyboardPatch; clipboard-sync on by default

- steamFrame.vrKeyboard -> steamFrame.steamKeyboardPatch (module, service
  and script names follow): it patches Steam's own on-screen keyboard
- clipboardSync.enable defaults to true: without it the nested desktop's
  clipboard is isolated

README.md

@@ -75,8 +75,7 @@ Requirements: Nix with flakes enabled and standalone home-manager.
 
   steamFrame = {
     keyboardLayout = "de";
-    vrKeyboard.enable = true;
-    clipboardSync.enable = true;
+    steamKeyboardPatch.enable = true;
     firefox.enable = true;
     # Only relevant with Steam Developer Mode on (see hidden-apps below).
     hiddenApps = [ "lxterminal" "cmake-gui" "firewall-config" "renderdoc" ];
@@ -100,7 +99,7 @@ home-manager switch --flake .#steamos
 ```
 
 Individual modules are available as
-`homeManagerModules.{session,portal,keyboard-layout,vr-keyboard,hidden-apps,clipboard-sync,firefox}`;
+`homeManagerModules.{session,portal,keyboard-layout,steam-keyboard-patch,hidden-apps,clipboard-sync,firefox}`;
 `default` imports all of them.
 
 **Steam Developer Mode** (a Steam setting, not managed here) makes the "+"
@@ -119,9 +118,9 @@ menu list every desktop entry, including terminals such as Konsole.
 | `steamFrame.portalFix.enable` | bool | `true` | Working portal config for the Steam session (OpenURI). |
 | `steamFrame.keyboardLayout` | null or str | `null` | XKB layout for the Steam session, e.g. `"de"`. `null` = no drop-in (US). |
 | `steamFrame.keyboardVariant` | null or str | `null` | XKB variant for the Steam session. |
-| `steamFrame.vrKeyboard.enable` | bool | `false` | Esc/Ctrl/Alt/AltGr and arrow keys on Steam's VR keyboard. |
+| `steamFrame.steamKeyboardPatch.enable` | bool | `false` | Runtime patch of Steam's on-screen keyboard: Esc/Ctrl/Alt, separate arrows, real Ctrl/Alt chords and hold, AltGr/non-ASCII characters. |
 | `steamFrame.hiddenApps` | list of str | `[ ]` | Desktop entry ids (without `.desktop`) to hide from the "+" and KDE menus. |
-| `steamFrame.clipboardSync.enable` | bool | `false` | Clipboard bridge between the Steam session and the nested desktop. |
+| `steamFrame.clipboardSync.enable` | bool | `true` | Clipboard bridge between the Steam session and the nested desktop. |
 | `steamFrame.clipboardSync.package` | package | built from `dnut/clipboard-sync` | The clipboard-sync package. |
 | `steamFrame.firefox.enable` | bool | `false` | Launcher for the Flathub Firefox Flatpak (`org.mozilla.firefox`) with the fixes below. |
 | `steamFrame.firefox.vrFullscreenFix` | bool | `true` | Link a `user.js` with `full-screen-api.ignore-widgets` into existing profiles. |
@@ -174,7 +173,7 @@ the Steam session starts.
 
 **Remove when** SteamOS applies a layout setting to gamescope.
 
-### VR keyboard (`vrKeyboard.enable`)
+### Steam keyboard patch (`steamKeyboardPatch.enable`)
 
 **Problem:** Steam's VR keyboard has hardcoded layouts without Ctrl, Alt or
 Esc. In VR, Steam can't press real keys
@@ -183,15 +182,15 @@ and its text emulation (`ControllerKeyboardSendText`) only maps plain ASCII:
 non-ASCII characters and anything needing AltGr or a dead key on the German
 keymap (`| @ { [ ] } \ ~ ^`, backtick, `ä ö ü €`) come out as `1`.
 
-**Fix:** the `vr-keyboard` user service (`vrkbd-helper.mjs`, Node) injects
-`vrkbd-patch.js` into Steam's UI at runtime through Steam's CEF DevTools port
+**Fix:** the `steam-keyboard-patch` user service (`helper.mjs`, Node) injects
+`patch.js` into Steam's UI at runtime through Steam's CEF DevTools port
 (`127.0.0.1:8080`; SteamOS starts Steam with `-cef-enable-debugging`) and
 re-injects it after Steam restarts or the keyboard popup is recreated.
 Steam's files are never modified. Enabling and disabling take effect on
 `home-manager switch`, no reboot or Steam restart needed: when the helper
 stops (service stopped, or the option disabled, which stops it via
 `userServices.stop`) it reverts the patch in Steam's running UI
-(`vrkbd-unpatch.js`). The service is restarted on every switch (via
+(`unpatch.js`). The service is restarted on every switch (via
 `userServices.restart`) so a changed patch is re-injected.
 
 - Bottom row becomes `Esc Ctrl Alt [Space] AltGr ← ↑ ↓ → Close`.

flake.nix

@@ -15,7 +15,7 @@
       session = ./modules/session.nix;
       portal = ./modules/portal.nix;
       keyboard-layout = ./modules/keyboard-layout.nix;
-      vr-keyboard = ./modules/vr-keyboard.nix;
+      steam-keyboard-patch = ./modules/steam-keyboard-patch.nix;
       hidden-apps = ./modules/hidden-apps.nix;
       # Built with the consumer's pkgs; only the source comes from our input.
       # The key lets the module system deduplicate it when it is imported both

modules/clipboard-sync.nix

@@ -11,10 +11,14 @@ let
   cfg = config.steamFrame.clipboardSync;
 in {
   options.steamFrame.clipboardSync = {
-    enable = lib.mkEnableOption ''
-      clipboard-sync between the Steam session and the nested desktop
-      (KDE autostart; on switch, stale builds and duplicates are stopped)
+    enable = lib.mkOption {
+      type = lib.types.bool;
+      default = true;   # without it the nested desktop's clipboard is isolated
+      description = ''
+        Whether to run clipboard-sync between the Steam session and the nested
+        desktop (KDE autostart; on switch, stale builds and duplicates are stopped).
       '';
+    };
     package = lib.mkOption {
       type = lib.types.package;
       default = pkgs.rustPlatform.buildRustPackage {

modules/session.nix

@@ -55,7 +55,7 @@ in {
       restart = lib.mkOption {
         type = lib.types.listOf lib.types.str;
         default = [ ];
-        example = [ "vr-keyboard.service" ];
+        example = [ "steam-keyboard-patch.service" ];
         description = "User units restarted on every switch (outer user manager).";
       };
       stop = lib.mkOption {

modules/steam-keyboard-patch.nix

@@ -2,7 +2,7 @@
 # The keyboard is part of Steam's UI (hardcoded layouts in steamui JS), and in
 # VR it can only send text; SteamClient.Input.ControllerKeyboardSetKeyState
 # throws "Unknown method". So:
-# - vrkbd-patch.js is injected at runtime into Steam's UI through its CEF
+# - patch.js is injected at runtime into Steam's UI through its CEF
 #   DevTools port (127.0.0.1:8080; SteamOS starts Steam with
 #   -cef-enable-debugging). Steam's files are untouched, so updates don't undo
 #   it. It rebuilds the bottom row and, while Ctrl/Alt is active (or for Esc),
@@ -10,7 +10,7 @@
 #   the real Ctrl/Alt down while the toggle is on (Ctrl+scroll), and routes
 #   characters Steam's key emulation turns into "1" (non-ASCII, AltGr/dead
 #   keys on the de keymap: |@{[]}\~^`äöü€…) to the helper.
-# - vrkbd-helper.mjs keeps that injection alive (Steam restarts, keyboard popup
+# - helper.mjs keeps that injection alive (Steam restarts, keyboard popup
 #   recreated) and presses the combos with `xdotool key` on :0, where gamescope
 #   keeps X focus on the window selected in VR. It only accepts ctrl/alt
 #   chords and the extra keys, so the Steam UI can't use it to type text or
@@ -19,21 +19,24 @@
 { config, pkgs, lib, ... }: {
   imports = [ ./session.nix ];
 
-  options.steamFrame.vrKeyboard.enable = lib.mkEnableOption ''
-    Esc/Ctrl/Alt/AltGr and arrow keys on Steam's VR keyboard (runtime patch of
-    Steam's UI through its CEF DevTools port, plus an xdotool helper service)
+  options.steamFrame.steamKeyboardPatch.enable = lib.mkEnableOption ''
+    the runtime patch of Steam's on-screen (VR) keyboard: Esc/Ctrl/Alt and four
+    separate arrow keys, real Ctrl/Alt chords (held while toggled, e.g. for
+    Ctrl+scroll), and working AltGr/non-ASCII characters. Injected into Steam's
+    UI through its CEF DevTools port by an xdotool helper service; disabling
+    it reverts the patch on the next switch
   '';
 
   config = lib.mkMerge [
-  (lib.mkIf config.steamFrame.vrKeyboard.enable {
-    systemd.user.services.vr-keyboard = {
+  (lib.mkIf config.steamFrame.steamKeyboardPatch.enable {
+    systemd.user.services.steam-keyboard-patch = {
       Unit.Description = "Modifier keys for Steam's VR keyboard (CEF patch + xdotool)";
       Service = {
         ExecStart = lib.escapeShellArgs [
           "${pkgs.nodejs}/bin/node"
-          "${./vr-keyboard/vrkbd-helper.mjs}"
-          "${./vr-keyboard/vrkbd-patch.js}"
-          "${./vr-keyboard/vrkbd-unpatch.js}"
+          "${./steam-keyboard-patch/helper.mjs}"
+          "${./steam-keyboard-patch/patch.js}"
+          "${./steam-keyboard-patch/unpatch.js}"
           "${pkgs.xdotool}/bin/xdotool"
         ];
         Environment = "VRKBD_DISPLAY=:0";
@@ -46,12 +49,12 @@
 
     # Restart on every switch so a changed patch is re-injected (it replaces
     # the older version).
-    steamFrame.userServices.restart = [ "vr-keyboard.service" ];
+    steamFrame.userServices.restart = [ "steam-keyboard-patch.service" ];
   })
   # Disabled: stop a still-running helper, which reverts the patch, so the
   # stock keyboard is back right away (no Steam restart or reboot).
-  (lib.mkIf (!config.steamFrame.vrKeyboard.enable) {
-    steamFrame.userServices.stop = [ "vr-keyboard.service" ];
+  (lib.mkIf (!config.steamFrame.steamKeyboardPatch.enable) {
+    steamFrame.userServices.stop = [ "steam-keyboard-patch.service" ];
   })
   ];
 }

modules/steam-keyboard-patch/helper.mjs

@@ -1,8 +1,8 @@
-// vrkbd-helper: injects vrkbd-patch.js into Steam's UI via CEF DevTools and
+// helper.mjs: injects patch.js into Steam's UI via CEF DevTools and
 // performs the key requests of the patched VR keyboard with xdotool on :0.
 // On SIGTERM/SIGINT it reverts the patch (unpatch.js), so stopping the service
 // restores Steam's stock keyboard without restarting Steam.
-// usage: node vrkbd-helper.mjs <patch.js> <unpatch.js> [xdotool]
+// usage: node helper.mjs <patch.js> <unpatch.js> [xdotool]
 import { readFileSync } from 'node:fs';
 import { execFile } from 'node:child_process';
 

modules/steam-keyboard-patch/patch.js

@@ -1,4 +1,4 @@
-// Injected into Steam's SharedJSContext (CEF, 127.0.0.1:8080) by vrkbd-helper.
+// Injected into Steam's SharedJSContext (CEF, 127.0.0.1:8080) by helper.mjs.
 // Extends Steam's VR keyboard for gamescope app windows:
 //  - bottom row: Esc Ctrl Alt [space] AltGr and four separate arrow keys
 //  - Ctrl/Alt chords and Esc are pressed for real (Steam can't: in VR
@@ -9,7 +9,7 @@
 //    into "1" -- anything non-ASCII or needing AltGr / a dead key on the X
 //    keymap -- are typed by the helper instead
 // Everything goes through the CDP binding window.__vrkbdKey("<op>:<arg>"),
-// executed by vrkbd-helper with xdotool on :0.
+// executed by helper.mjs with xdotool on :0.
 // Idempotent: safe to evaluate repeatedly.
 (() => {
   const VERSION = 5;

modules/steam-keyboard-patch/unpatch.js

@@ -1,4 +1,4 @@
-// Reverts vrkbd-patch.js in Steam's SharedJSContext; evaluated by vrkbd-helper
+// Reverts patch.js in Steam's SharedJSContext; evaluated by helper.mjs
 // when it stops (service stopped, module disabled). Every patched function
 // keeps its original as __vrkbdOrig. Safe to run when nothing is patched.
 (() => {