Jupyter has been in experimental for a while and presumably will make it to unstable in the not too distant future. Once that is done, what is the correct way for packages providing a jupyter kernel to install it? * manually install kernel.json in /usr/share/jupyter/kernels/<pkgname>? * build-depend on python3-jupyter-core and call `jupyter kernelspec install` during build? * runtime-depend and install in postinst instead? * (something else) Gordon