Further investigation revealed that even libinput-list-devices(1) crashes, although with a clear-cut assertion error:
Assertion failed: (libinput->refcount > 0), function libinput_unref, file ../src/libinput.c, line 1957.
All of the ports involved have remained the same, albeit rebuilt after the intervening ABI bump.
-- Charlie Li …nope, still don't have an exit line.
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