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Pass APPIMAGE_EXTRACT_AND_RUN as an environment variable instead of the --appimage-extract-and-run CLI flag. The flag is intercepted by the AppImage runtime, so forwarding it to a non-AppImage executable (e.g. an extracted AppRun from appimagetool --appimage-extract) makes appimagetool fail with: Option parsing failed: Unknown option --appimage-extract-and-run. The environment variable is ignored by non-AppImage executables and achieves the same no-FUSE behavior on hosts without libfuse2.
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Problem
scripts/linux/build-appimage.shinvokes appimagetool with the--appimage-extract-and-runCLI flag. That flag is intercepted by the AppImage runtime and never reaches the binary — but only when the invoked path is an actual (Type 2) AppImage. WhenAPPIMAGETOOLpoints at an already-extracted AppRun (the standard workaround on hosts withoutlibfuse2), the flag leaks through to appimagetool's own option parser and the build fails:Solution
Use the
APPIMAGE_EXTRACT_AND_RUN=1environment variable instead of the CLI flag. The runtime honors it identically, and non-AppImage executables simply ignore it, so both invocation styles work — including on hosts without libfuse2.Testing
Built
Nuvio-Linux-x86_64-0.1.21-alpha.AppImage(157 MB) locally both ways:APPIMAGETOOL→ extracted AppRun (previously failed with the error above) ✅APPIMAGETOOL→ real appimagetool 1.9.1 AppImage on a host without libfuse2 ✅