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a998bfc3f1
This fixes bootc's use of the Discoverable Partition Specification (DPS) to properly support systemd-gpt-auto-generator. Previously, bootc was incorrectly setting filesystem UUIDs to the DPS partition type UUID value, which caused UUID collisions and prevented proper DPS functionality. It's still a TODO on our side to support systemd-repart in this flow. Note we go back to using random filesystem UUIDs with this, but per above we should likely reinitialize them on boot via repart. Note we remove root= parameter from kernel cmdline for composefs sealed images, allowing systemd-gpt-auto-generator to auto-discover the root partition and we test this. Fixes: #1771 Assisted-by: Claude Code (Sonnet 4.5) Signed-off-by: Colin Walters <walters@verbum.org>