sysext: Add fast path dev flow#2127
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cgwalters merged 1 commit intobootc-dev:mainfrom Apr 7, 2026
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This pull request introduces a high-speed development workflow using systemd-sysext and the bcvk tool, allowing for rapid binary updates within a persistent VM without full RPM rebuilds. The changes include a new Dockerfile stage, just recipes, and a Rust-based management module in xtask. Feedback focuses on removing a leftover dbg! macro, improving the robustness of shell script loops, replacing fragile hardcoded sleeps with retry logic, and correcting the detection logic for secure boot variants. Additionally, it is recommended to return errors from helper functions rather than calling std::process::exit directly.
For most work on `bootc upgrade` or `bootc switch`, rebuilding the full container image is unnecessary. This adds a fast-path workflow that builds just the bootc binary into a systemd-sysext and overlays it onto /usr in a persistent bcvk VM via virtiofs. For more info see the updated Justfile. There's still some TODOs here - e.g. we need to support running the TMT tests this way, etc. Assisted-by: OpenCode (claude-opus-4-6) Signed-off-by: Colin Walters <walters@verbum.org>
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For most work on
bootc upgradeorbootc switch, rebuilding the full container image is unnecessary. This adds a fast-path workflow that builds just the bootc binary into a systemd-sysext and overlays it onto /usr in a persistent bcvk VM via virtiofs.For more info see the updated Justfile.
There's still some TODOs here - e.g. we need to support running the TMT tests this way, etc.
Assisted-by: OpenCode (claude-opus-4-6)