New comment by dkwo on void-packages repository

https://github.com/void-linux/void-packages/pull/34030#issuecomment-975775712

Comment:
Also, it would be useful to have a symlink so that sage can be used from jupyterlab.
Arch does it like that:
```
# fix symlinks to assets
  _pythonpath=`python -c "from sysconfig import get_path; print(get_path('platlib'))"`
  for _i in $(ls "$srcdir"/sage-$pkgver/src/sage/ext_data/notebook-ipython); do
    rm "$pkgdir"/usr/share/jupyter/kernels/sagemath/$_i
    ln -s $_pythonpath/sage/ext_data/notebook-ipython/$_i "$pkgdir"/usr/share/jupyter/kernels/sagemath/
  done
```
I'll look into it later.