One additional note - after installing via the pypi package, I had issues with the following script:
import qsimcirq
test = qsimcirq.qsim_simulator.QSimSimulator()
# fails with "qsimcirq has no attribute 'qsim_simulator'"
Oddly, importing the submodule with from qsimcirq worked just fine:
from qsimcirq import qsim_simulator as qss
test = qss.QSimSimulator()
# no error
Originally posted by @95-martin-orion in #18 (comment)