@@ -239,6 +239,8 @@ build documentation:

     - build:latest

   stage: test

   script:

+    - pip install git+https://github.com/jupyter-widgets/jupyter-sphinx

+    - python -m ipykernel install --user --name kwant-latest

     - make -C doc realclean; make -C doc html SPHINXOPTS='-A website_deploy=True -n -W' SOURCE_LINK_TEMPLATE="$CI_PROJECT_URL"/blob/\$\$r/\$\$f

   artifacts:

     paths:

@@ -251,6 +253,8 @@ build PDF documentation:

     - build:latest

   stage: test

   script:

+    - pip install git+https://github.com/jupyter-widgets/jupyter-sphinx

+    - python -m ipykernel install --user --name kwant-latest

     - make -C doc latex SPHINXOPTS='-n -W'

     - cd doc/build/latex

     - make all-pdf