Mill application startup issue#1052
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The snapped Linux build could inherit GTK module settings that load GTK 2 canberra modules into the GTK 3 Flutter process. This adds a launch wrapper that strips incompatible GTK entries before startup and initializes X11 threading earlier to avoid follow-on renderer assertions. Co-authored-by: Calcitem <calcitem@outlook.com>
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Pop!_OS systems with NVIDIA PRIME can fail to create an OpenGL context inside the confined snap runtime, which aborts the Flutter engine during startup. Default the snap launcher to Flutter's software renderer so affected systems can start, while still allowing explicit renderer overrides. Co-authored-by: Calcitem <calcitem@outlook.com>
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📜 Description
Addresses startup failures for the Mill app when installed via Snap on Linux (e.g., Pop!_OS). This includes resolving GTK2/GTK3 module conflicts and ensuring proper X11 thread initialization.
💡 Motivation and Context
Users reported the Mill app failing to launch via Snap, presenting a black screen and console errors related to:
libcanberra-gtk-module.so).GLAreaandFlKeyboardManagerassertions.These issues are primarily caused by Snap's environment injecting incompatible GTK2 modules and the lack of early X11 thread initialization in the Flutter Linux runner.
💚 How did you test it?
GTK_MODULESandGTK_PATH.ninja,clang++,gtk+-3.0dev packages). The changes compile successfully in isolation.📝 Checklist
🔮 Next steps