get_firmware_search_dirs() previously hardcoded /usr/share/qemu/firmware as the only system-wide search path. That assumption breaks on distributions that deliberately do not populate /usr/share, making vmspawn fail: "Failed to find OVMF config: No such file or directory". NixOS exposes those firmware locations through XDG_DATA_DIRS. Extend the search list with XDG_DATA_HOME/XDG_DATA_DIRS. This is the standard XDG mechanism and is already what QEMU itself uses for the same descriptors, so behavior matches user expectations across tooling. To avoid regressing setups where user has set XDG_DATA_DIRS to a custom value that omits /usr/share, keep /usr/share/qemu/firmware as an unconditional fallback. Precedence is unchanged: XDG_CONFIG_HOME/qemu/firmware still wins over /etc/qemu/firmware, which still wins over any shared-data dir. Co-developed-by: Claude Opus 4.7 <noreply@anthropic.com> Signed-off-by: Paul Meyer <katexochen0@gmail.com>
System and Service Manager
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