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fix(host/input): route KWin auto-detect to the fake_input backend

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apply_input_env() hard-pinned PUNKTFUNK_INPUT_BACKEND=libei for KWin, and
default_backend() reads that env first — so the auto-detecting host (the
normal `serve` service) ignored the new KwinFakeInput backend and fell back
to the RemoteDesktop portal path that needs a user to approve. Route KWin to
"kwin" (org_kde_kwin_fake_input); GNOME/Mutter stay on libei (no fake_input
there).

Validated live on a Bazzite KDE box via the auto-detect path:
backend=KwinFakeInput, "KWin fake_input ready (no portal)", input events
forwarded with no errors.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Enrico Bühler
2026-06-27 11:52:02 +00:00
parent 428b2901f6
commit 9a487576ef
1 changed files with 5 additions and 1 deletions
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crates/punktfunk-host/src/vdisplay.rs
+5 -1
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@@ -457,7 +457,11 @@ pub fn settle_desktop_portal(_chosen: Compositor) {}
pub fn apply_input_env(chosen: Compositor) { pub fn apply_input_env(chosen: Compositor) {
let backend = match chosen { let backend = match chosen {
Compositor::Gamescope => "gamescope", Compositor::Gamescope => "gamescope",
Compositor::Kwin | Compositor::Mutter => "libei", // KWin: org_kde_kwin_fake_input — direct injection, no RemoteDesktop portal / approval
// dialog (headless, the krdpserver path), authorized by the host's shipped .desktop.
Compositor::Kwin => "kwin",
// GNOME has neither fake_input nor the wlr protocols → RemoteDesktop portal via libei.
Compositor::Mutter => "libei",
Compositor::Wlroots => "wlr", Compositor::Wlroots => "wlr",
}; };
std::env::set_var("PUNKTFUNK_INPUT_BACKEND", backend); std::env::set_var("PUNKTFUNK_INPUT_BACKEND", backend);