I'm guessing it either
A: Assumes that the driver is in the default path, as per the instructions in the original package from lxp that they came in.
or
B: Performs epically awesome shell script voodoo, searching the system for a directory that has all of the files with the respective kernel module names in it, then saves that location to somewhere, then, if at some point it gets an error because those files are no longer there, it repeats the search.

Cuz B would be awesome...slow, but awesome.... but it's probably A.