pyq: Cannot run pyq with 64bit kdb+

Hi, I am trying to install pyq in a python virtualenv, following the instructions here, with a licensed copy of kdb (64bit). Installation goes fine, but when I try to run pyq I get the following error:

(krypton_env_64) giovanni@mymachine ~$ pyq
qbinpath = /home/giovanni/workspace/krypton_env_64/q/l64/q
qbinpath = /home/giovanni/workspace/krypton_env_64/q/l64/q
qbinpath = /home/giovanni/workspace/krypton_env_64/q/l64/q
qbinpath = /home/giovanni/q/l64/q
No such file or directory

Although, as you can see, the q binary is there:

(krypton_env_64) giovanni@mymachine ~$ ls -R /home/giovanni/workspace/krypton_env_64/q/
/home/giovanni/workspace/krypton_env_64/q/:
k4.lic  l64  p.k  pyq-config.q  pyq-operators.q  python.q  q.k

/home/giovanni/workspace/krypton_env_64/q/l64:
p.so  q

Could you please advise on how to handle this issue? I’m using Python 3.6.1 |Continuum Analytics, Inc.| (default, May 11 2017, 13:09:58) [GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux