A replaced daemon used to linger forever: both takeover paths (ensure_running
on a failed connect, restart after the Shutdown wait) would unlink the endpoint
and spawn a fresh daemon without checking whether the old process was still
alive. A daemon that couldn't be stopped — a binary predating ClientMsg::Shutdown,
or a wedged teardown — survived unreachable, still holding every pane's PTY and
children. That is exactly how 14 panes (11 live sessions) got silently stranded
across an app update.
Now the daemon records its pid in <config>/daemon.pid after bind, and both
takeover paths reap the recorded daemon before claiming the endpoint:
SIGTERM first — handled by a new sigwait thread that tears down like Shutdown,
giving every pane's child its SIGHUP grace — then SIGKILL if it won't die.
The pidfile is never trusted blindly: the pid must be alive and its executable
basename must match our own, so a crashed daemon's stale pidfile (pid possibly
recycled) is cleared, not killed. Windows reaps via the existing winproc
helpers, descendants-first, mirroring the pane hangup order.
Fixes#42
Co-authored-by: l0ng-ai <24760907+l0ng-ai@users.noreply.github.com>
tty7 is split into two Rust processes: a persistent daemon that owns the
shells and a GPU-rendered client that talks to it over a local socket.
Because the shells live in the daemon, quitting and reopening the app
leaves the session intact — detach and reattach, no tmux required.
- Persistent sessions — the daemon holds the PTYs and child processes, so
closing a window or swapping in a new build never takes a shell down.
- Performance — an 11 MB `cat` completes in 95 ms and DOOM-fire renders at
888 fps; the daemon drains the PTY at device speed off the render path.
- Shell-aware — new tabs and splits open in the current working directory;
zsh, bash, fish, and PowerShell are set up automatically.
- Enhanced prompt — inline completion, syntax highlighting, history, and
in-terminal search, with rich flag/subcommand signatures for common tools.
- Tabs, resizable splits, a command palette, click-to-open links, desktop
notifications, eight themes, and CJK/IME input.
Native builds for macOS, Windows, and Linux.
Built on Zed's gpui and Alacritty's VT core.
l0ng-aiandl0ng-ai
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