Poltergeist: File watcher with auto-rebuild for any language or build system

Summary

Poltergeist The ghost that keeps your builds fresh 👻 A universal file watcher with auto-rebuild for any language or build system Poltergeist is an AI-friendly universal file-watcher that auto-detects any project and rebuilds them as soon as a file has been changed. Think npm run dev for native apps, with automatic configuration, notifications and a smart build queue. It stands on the shoulders of giants and fills the glue layer that's been missing. Works on macOS, Linux, and Windows. Available as a standalone binary (no Node.js required) or npm package. 📖 Read the story behind Poltergeist: The Ghost That Keeps Your Builds Fresh - Learn how this tool was built using Claude Code and why it's designed to accelerate both human and AI development workflows. Installation Homebrew (macOS, ARM64) brew tap steipete/tap brew install poltergeist npm (all platforms) npm install -g @steipete/poltergeist Requirements Poltergeist requires Watchman to be installed: macOS : brew install watchman : Linux : Installation guide : Installation guide Windows: Chocolatey package or manual install Poltergeist offers both a CLI tool for universal development and a native macOS app for enhanced monitoring (coming soon). Features Universal Target System : Support for anything you can build - executables, app bundles, libraries, frameworks, tests, Docker containers, ... : Support for anything you can build - executables, app bundles, libraries, frameworks, tests, Docker containers, ... Smart Execution Wrapper : polter command that waits for a build to complete, then starts it : command that waits for a build to complete, then starts it Real-time Build Output : See build progress as it happens, no more waiting in the dark : See build progress as it happens, no more waiting in the dark Inline Error Diagnostics : Build errors shown immediately with context and actionable suggestions : Build errors shown immediately with context and actionable suggestions Manual Build Command : Trigger builds expli...