forked from unom/punktfunk
enricobuehlerandClaude Opus 4.8
9ea5c2a129
Restructure open()/Backend/default_backend so an impossible OS/backend pairing
is a compile error instead of a runtime bail! (plan §2.3). Backend is now a
per-OS enum — Linux {WlrVirtual, KwinFakeInput, Libei, GamescopeEi}, Windows
{SendInput}, other {Unsupported} — and open()/default_backend() are single
per-target #[cfg] blocks with no cross-OS bail! arms.
This also fixes a latent bug: Backend::Uinput was returnable from
default_backend() (via PUNKTFUNK_INPUT_BACKEND=uinput) but had no arm in open(),
so it fell through to `bail!("not implemented")` — a runtime failure. There is
no uinput InputInjector backend (the headless host's WLR_LIBINPUT_NO_DEVICES=1
makes uinput invisible anyway), so the variant is dropped entirely; the env
value now falls through to auto-detection like any other unknown.
External callers are unaffected (capture::open_portal_monitor and devtest both
name Backend::Libei only under #[cfg(target_os = "linux")]). Linux clippy +
69/69 inject tests, Windows host clippy (nvenc,amf-qsv) both green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>