fix(turbo): graceful shutdown on sighup (#10764)

chris-olszewski · web-flow · commit ddaed6e42f1b · 2025-08-14T15:46:02.000-04:00
### Description When trying to figure out why grouped logs don't get flushed on GitHub Actions timeouts I came across actions/runner#1309 Seems promising, since I have verified that `SIGINT` results in logs getting flushed, but `SIGHUP` wouldn't trigger a flush. ### Testing Instructions Send a `SIGHUP` to `turbo` and verify that everything gets shut down cleanly: ``` [130 olszewski@macbookpro] /tmp/grouped $ turbo_dev --skip-infer dev --log-order=grouped turbo 2.5.6-canary.1 • Packages in scope: @repo/eslint-config, @repo/typescript-config, @repo/ui, docs, web • Running dev in 5 packages • Remote caching disabled web:dev: cache bypass, force executing b1407803afdc4dc7 web:dev: web:dev: > web@0.1.0 dev /private/tmp/grouped/apps/web web:dev: > next dev --turbopack --port 3000 web:dev: web:dev: ▲ Next.js 15.4.2 (Turbopack) web:dev: - Local: http://localhost:3000 web:dev: - Network: http://192.168.86.73:3000 web:dev: web:dev: ✓ Starting... web:dev: ✓ Ready in 942ms web:dev: docs:dev: cache bypass, force executing 9119eefc14447289 docs:dev: docs:dev: > docs@0.1.0 dev /private/tmp/grouped/apps/docs docs:dev: > next dev --turbopack --port 3001 docs:dev: docs:dev: ▲ Next.js 15.4.2 (Turbopack) docs:dev: - Local: http://localhost:3001 docs:dev: - Network: http://192.168.86.73:3001 docs:dev: docs:dev: ✓ Starting... docs:dev: ✓ Ready in 943ms docs:dev: ERROR run failed: command exited (1) ```
diff --git a/crates/turborepo-signals/src/listeners.rs b/crates/turborepo-signals/src/listeners.rs
@@ -23,12 +23,16 @@ pub fn get_signal() -> Result<impl Stream<Item = Option<Signal>>, Error> {
     use tokio::signal::unix;
     let mut sigint = unix::signal(unix::SignalKind::interrupt())?;
     let mut sigterm = unix::signal(unix::SignalKind::terminate())?;
+    let mut sighup = unix::signal(unix::SignalKind::hangup())?;
 
     Ok(stream::once(async move {
         tokio::select! {
             res = sigint.recv() => {
                 res.map(|_| Signal::Interrupt)
             }
+            res = sighup.recv() => {
+                res.map(|_| Signal::Interrupt)
+            }
             res = sigterm.recv() => {
                 res.map(|_| Signal::Terminate)
             }
