Dear NEST users and developers,

Pylint was recently updated to version 3, which changed the way in which pylintrc is discovered (https://github.com/pylint-dev/pylint/issues/8862). This seems to break pytest.

So if “make installcheck” gives you the message

Executing NEST's testsuite...

Error: PyNEST testing requested, but 'pytest' cannot be run.

Testing also requires the 'pytest-xdist' and 'pytest-timeout' extensions.

And running

pytest --version

gives you a long error trace ending in

ImportError: cannot import name 'PYLINTRC' from 'pylint.config' ...

and

pylint --version

shows version 3.x.x, you need to downgrade to “pylint<3”.

https://github.com/nest/nest-simulator/pull/2996 updates our environment file accordingly.

Best, Hans Ekkehard

--

Prof. Dr. Hans Ekkehard Plesser

Department of Data Science Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway

Phone +47 6723 1560 Email hans.ekkehard.plesser@nmbu.nomailto:hans.ekkehard.plesser@nmbu.no Home http://arken.nmbu.no/~plesser