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Use uruntime for the AppImage so it runs without libfuse2 #137

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Use uruntime for the AppImage so it runs without libfuse2 #137

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11 changes: 10 additions & 1 deletion scripts/build-appimage.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,15 @@ await $`chmod +x ${appDir}/AppRun`;
// runtime regardless of $ARCH, which would silently produce a broken,
// non-executable AppImage when cross-packaging for aarch64 - so the matching
// runtime stub is always fetched explicitly and passed via --runtime-file.
//
// The runtime is uruntime rather than AppImageKit's: AppImageKit's runtime
// needs libfuse2, which most current distros (Ubuntu 22.04+, Fedora, ...)
// don't install by default, so the AppImage would fail to start there.
// uruntime is a static musl binary that uses FUSE when it can, and otherwise
// falls back to mount namespaces or extracting to a temp dir - so the
// AppImage also starts on hosts without FUSE. Pinned to a tag so builds are
// reproducible.
const URUNTIME_VERSION = "v0.7.1";

const appimagetool = `${workDir.path}/appimagetool`;
await $.request(
Expand All @@ -157,7 +166,7 @@ const appimagetoolArch = arch === "aarch64" ? "arm_aarch64" : arch;

const runtimeFile = `${workDir.path}/runtime-${arch}`;
await $.request(
`https://github.com/AppImage/AppImageKit/releases/download/continuous/runtime-${arch}`,
`https://github.com/VHSgunzo/uruntime/releases/download/${URUNTIME_VERSION}/uruntime-appimage-squashfs-${arch}`,
).pipeToPath(runtimeFile);

await $`mkdir -p ${outputPath.replace(/[^/]+$/, "") || "."}`;
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