⚡ Disleep

Your Mac doesn't sleep until the vibe session is over.

A tiny, sleek macOS menu bar app that fully disables sleep — lid closed, screen off, doesn't matter — with one password prompt ever. No daemons, no Electron, no 200 MB of Chromium to flip one pmset flag. Just ~600 lines of Swift.

Why

You kick off an overnight agent run / model training / ffmpeg render, close the lid, go touch grass — and macOS puts your Mac to sleep like it's 2009. caffeinate dies with your terminal and doesn't survive a closed lid anyway. Real ones need pmset disablesleep, but that wants sudo every single time.

Disleep fixes the whole loop:

• 🔓 One password prompt, ever. First launch installs a surgical sudoers rule for exactly pmset -a disablesleep 0|1 — nothing else. After that: zero prompts, forever, across reboots.
• ⚡ A tray icon you can't ignore. While sleep is disabled, the menu bar bolt pulses orange every 0.6 s. You will not forget your Mac is running hot in a backpack.
• 🎛️ Native Apple-style UI. SwiftUI panel pinned to the tray icon, orange switch, warning card, system-style HUD sliding out from under the menu bar on every toggle.
• 🛟 Fail-safe by default. Quit the app — sleep comes back. App crashes — a detached watchdog restores sleep within ~5 s. You can't end up stuck awake.
• ⌨️ Global hotkeys. Bind your own shortcuts for toggle / force-on / force-off in Settings.
• 🎪 Awake reminders. Pick one of 7 playful overlay animations (Dynamic-Island-style notch expansion, edge glow, DVD bounce, googly-eyed corner peeker…) that plays every N seconds while sleep is disabled. Style + frequency in Settings.
• 🌡️ Thermal warning. If the CPU heats past normal (system thermal state fair/serious/critical), a warning card slides out — extra useful since a no-sleep Mac never cools off in a bag.
• 🤖 Claude Code sync. Auto-disable sleep while a Claude Code instance is actually working and restore normal sleep the moment it goes idle. "Actually working" is detected via the iTerm2 scripting API (a busy session on a tty running claude); a terminal-agnostic "whenever it's running" mode is also available.

Install

git clone <this-repo> && cd disleep
./build.sh
open build/Disleep.app

Type your password once, and that's the last time Disleep will ever ask.

Optionally: move build/Disleep.app to /Applications and add it to Login Items.

Usage

Action	Result
Click the gray ⚡ bolt in the menu bar	Panel opens
Flip the orange switch	Sleep fully disabled, HUD confirms, bolt starts pulsing
Flip it back / hit Quit	Normal sleep restored
Kill it, crash it, whatever	Watchdog restores sleep anyway

How it works

No helper daemons, no launchd services, no kernel extensions:

1. First launch — one osascript admin prompt writes /etc/sudoers.d/disleep, validated with visudo -c before install (a malformed rule physically cannot brick your sudo). The rule allows your user to run exactly two commands passwordless: pmset -a disablesleep 0 and ... 1.
2. Toggle — sudo -n pmset -a disablesleep 1|0, then the app re-reads pmset -g so the UI never lies about actual system state.
3. Safety net — a detached shell watchdog polls the app's PID; when the app dies for any reason, it re-enables sleep.

Uninstall

./uninstall.sh   # removes the sudoers rule + restores normal sleep

Then delete Disleep.app. Your system is exactly as it was.

Hacking

Pure Swift + AppKit + SwiftUI, zero dependencies, builds in ~2 s:

Sources/
├── Main.swift          # entry point, accessory app
├── AppDelegate.swift   # status item, pulse timer
├── AppController.swift # state machine
├── Sudo.swift          # sudoers install, pmset, watchdog
├── StatusPanel.swift   # custom anchored panel (NSPopover is broken on fullscreen Spaces, we do the math ourselves)
├── MenuView.swift      # the panel UI
├── HUD.swift           # toggle HUD
├── Icons.swift         # SF Symbol tray icons
├── Settings.swift      # persisted settings + hotkey/sync wiring
├── Shortcut.swift      # key-code ⇄ display, Carbon modifier mapping
├── Hotkeys.swift       # global hotkeys via Carbon RegisterEventHotKey
├── ClaudeSync.swift    # polls `ps` for active claude processes
├── Reminders.swift     # 7 "still awake" overlay animations + engine
├── ThermalWatch.swift  # thermal-state warning overlay
└── SettingsWindow.swift# SwiftUI settings window + shortcut recorder

Regenerate the app icon: swift Resources/make_icon.swift /tmp/icon.png and rebuild the .icns (see Resources/).

Disclaimer

disablesleep means disabled. Lid closed in a bag = heat + battery drain. That's literally why the icon pulses at you. Stay hydrated, watch your thermals. 🧃

License

MIT