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fix: unset $TMUX env for nested tmux session creation

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When running the dev server inside a tmux session, $TMUX is inherited
and tmux refuses to create new sessions ("sessions should be nested
with care, unset $TMUX to force"). Production (systemd) has a clean
env so this only affects dev/test. Strip $TMUX from the execSync env
when calling tmux new-session.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
arkon
2026-02-26 15:41:37 +01:00
co-authored by Claude Opus 4.6
parent 33f39c91ba
commit 73d9469580
1 changed files with 6 additions and 2 deletions
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src/tmux-manager.ts
+6 -2
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@@ -154,7 +154,7 @@ function buildOpenCodeCommand(config?: OpenCodeConfig): string {
if (config?.continueSession) { if (config?.continueSession) {
const safeId = /^[a-zA-Z0-9_-]+$/.test(config.continueSession) ? config.continueSession : undefined; const safeId = /^[a-zA-Z0-9_-]+$/.test(config.continueSession) ? config.continueSession : undefined;
if (safeId) parts.push('--session', safeId); if (safeId) parts.push('--session', safeId);
if (config.forkSession) parts.push('--fork'); if (safeId && config.forkSession) parts.push('--fork');
} }
return parts.join(' '); return parts.join(' ');
@@ -405,9 +405,13 @@ export class TmuxManager extends EventEmitter implements TerminalMultiplexer {
// 1. Create session with default shell (starts tmux server, stays alive) // 1. Create session with default shell (starts tmux server, stays alive)
// 2. Set remain-on-exit (server now exists, session won't vanish on exit) // 2. Set remain-on-exit (server now exists, session won't vanish on exit)
// 3. Replace shell with actual command via respawn-pane (no terminal echo) // 3. Replace shell with actual command via respawn-pane (no terminal echo)
// Unset $TMUX so nested sessions work when the dev server itself runs inside tmux.
// (Production uses systemd which has a clean env, but dev/test may be nested.)
const cleanEnv = { ...process.env };
delete cleanEnv.TMUX;
execSync( execSync(
`tmux new-session -ds "${muxName}" -c "${workingDir}" -x 120 -y 40`, `tmux new-session -ds "${muxName}" -c "${workingDir}" -x 120 -y 40`,
{ cwd: workingDir, timeout: EXEC_TIMEOUT_MS, stdio: 'ignore' } { cwd: workingDir, timeout: EXEC_TIMEOUT_MS, stdio: 'ignore', env: cleanEnv }
); );
// Set remain-on-exit now that the server is running — must be before respawn-pane // Set remain-on-exit now that the server is running — must be before respawn-pane