This allows us to build and install after booting without having to build a new image. Together with https://github.com/systemd/mkosi/pull/2601 and after enabling RuntimeBuildSources=yes, after booting, "meson install -C /work/build" can be used to do an incremental build and install. This won't build proper packages, but will be invaluable for having a quick compile, edit, test cycle without having to rebuild the image all the time.
System and Service Manager
Details
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