mybinder fails to install ktnumpy 0.1.4

[alshan]

When trying to execute Kotlin notebook at mybinder I'm getting an error:

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output." when executing the command: python -m pip install -i https://pypi.org/simple/ ktnumpy==0.1.4

The notebook: https://nbviewer.jupyter.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/contours.ipynb

[devcrocod]

Error installing ktnumpy. Jni headers are needed to build ktnumpy, but there is no JAVA_HOME in the environment.