QML Application Build & DLL Deployment

Build scripts for QML applications must handle three concerns beyond compilation: deploying Qt runtime DLLs next to the executable, verifying QML plugin directories exist, and ensuring platform plugins are present. Missing any of these causes silent failures — the app compiles and runs but shows no window.

When to Use This Skill

• Writing a build/deploy script for any application that loads .qml files at runtime
• Debugging a Qt/QML app that compiles but shows no visible window
• Setting up CI/CD for a CxxQt (Rust) or PySide6 (Python) QML project on Windows
• Expanding an existing build script to handle Qt DLL deployment robustly

Qt Installation Discovery

Always resolve the Qt installation path early and fail fast if it's missing.

PowerShell Pattern