feat(build): enable cargo add boxlite with prebuilt runtime download#241
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DorianZheng merged 3 commits intomainfrom Feb 12, 2026
Merged
feat(build): enable cargo add boxlite with prebuilt runtime download#241DorianZheng merged 3 commits intomainfrom
DorianZheng merged 3 commits intomainfrom
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Add BOXLITE_DEPS_STUB=2 (Prebuilt) mode that downloads a pre-built runtime tarball from GitHub Releases during cargo build, eliminating the need for LLVM, Go, make, or meson on the consumer's machine. - Introduce DepsMode enum (Source/Stub/Prebuilt) in boxlite/build.rs - Add download_prebuilt_runtime() and create_library_symlinks() for fetching and preparing prebuilt native dependencies - Emit cargo:rustc-env=BOXLITE_RUNTIME_DIR so RuntimeBinaryFinder can locate boxlite-shim/boxlite-guest at compile time via option_env!() - Add rerun-if-env-changed=BOXLITE_DEPS_STUB to all -sys crate build scripts for correct incremental rebuild - Update build-runtime CI workflow for tarball publishing
Build Linux runtime inside quay.io/pypa/manylinux_2_28 container to ensure binaries work on older distros (RHEL 8/9, Debian 11, etc.). - Guest built on host (Ubuntu has musl-tools, manylinux doesn't) - Runtime/shim/libkrun built in container (glibc 2.28) - Add actions/cache for manylinux cargo registry (CARGO_HOME mounted from host volume since Swatinem/rust-cache can't run in Docker) - macOS build unchanged (native runner) Mirrors the established pattern from build-node.yml.
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Summary
BOXLITE_DEPS_STUB=2(Prebuilt) mode: downloads runtime tarball from GitHub Releases duringcargo build, so downstream Rust users cancargo add boxlitewithout needing LLVM, Go, make, or mesonDepsModeenum inboxlite/build.rsto route between Source/Stub/Prebuilt build paths-syscrate build scripts now respectBOXLITE_DEPS_STUBfor correct incremental rebuildsRuntimeBinaryFindergains compile-time fallback viaoption_env!("BOXLITE_RUNTIME_DIR")so runtime binaries (boxlite-shim, boxlite-guest, mke2fs, debugfs) are discoverable without env varsTest plan
BOXLITE_DEPS_STUB=1 cargo check -p boxlite— passes (CI lint mode)BOXLITE_DEPS_STUB=1 cargo clippy -p boxlite— passes, no warningsBOXLITE_DEPS_STUB=2 cargo test -p boxlite --lib— 318 tests passcargo add boxlitebuilds and runs (echo "Hello from BoxLite!"inside Alpine VM)