Am not allowed to put more than two links in a post… So the refs are a bit weird below.
Parcels repo: https://github.com/OceanParcels/parcels/
Requirements
See environment_py3_linux.yml in the Parcels repo for full env. They get pytest and nbval from PyPi, and py (why though?) from conda-forge.
CI
Full Travis config in .travis.yml of the Parcels repo.
There is some issue with running nbval without a display. So they use
export DISPLAY=:99.0;
sh -e /etc/init.d/xvfb start;
sleep 3;
py.test -v -s --nbval-lax examples/;
in a linux image that seems to have xvfb preinstalled.
(Note that Parcels uses --nbval-lax and hence just checks for execution without error.)
A similar workflow seems to be used by the vtkiorg/vtki repo.
CI logs
This is a sample output: https://travis-ci.org/OceanParcels/parcels/jobs/515320252#L1871