On Gentoo arm (softfloat/hardfloat), there's no lib64 because it's not 64bit. So add in /usr/lib as well, because that's where bluezutils can be found.
Without this, on arm, you get a log full of
E, [2017-10-23T03:01:18.413008 #2477] ERROR -- : Error with test-discovery script..
E, [2017-10-23T03:01:18.413264 #2477] ERROR -- : Traceback (most recent call last):
E, [2017-10-23T03:01:18.413584 #2477] ERROR -- : File "/home/steev/sandbox/blue_hydra/bin/test-discovery", line 15, in <module>
E, [2017-10-23T03:01:18.413695 #2477] ERROR -- : import bluezutils
E, [2017-10-23T03:01:18.413783 #2477] ERROR -- : ImportError: No module named bluezutils
On Gentoo arm (softfloat/hardfloat), there's no lib64 because it's not 64bit. So add in /usr/lib as well, because that's where bluezutils can be found.
Without this, on arm, you get a log full of