Installing kernel

[rgbkrk]

Following the readme, I installed beakerx and enabled the extension. How do I install the kernels (Scala, Kotlin, etc.)?

[scottdraves]

Hi Kyle, the pip install doesn't install the kernels, you also need to do something like what's discussed in #5720, in particular:

jupyter kernelspec install --sys-prefix --replace --name scala /Users/spot/anaconda/envs/testx/lib/python3.5/site-packages/beakerx/static/kernel/scala

but with a different prefix. the cms for other languages are constructed the same way.

[rgbkrk]

Thanks!

I suppose there's more I'll need as well:

Error: Could not find or load main class com.twosigma.beakerx.scala.kernel.Scala
[I 14:29:25.918 NotebookApp] KernelRestarter: restarting kernel (1/5)
Error: Could not find or load main class com.twosigma.beakerx.scala.kernel.Scala
[I 14:29:28.928 NotebookApp] KernelRestarter: restarting kernel (2/5)
Error: Could not find or load main class com.twosigma.beakerx.scala.kernel.Scala
[I 14:29:31.936 NotebookApp] KernelRestarter: restarting kernel (3/5)
Error: Could not find or load main class com.twosigma.beakerx.scala.kernel.Scala
[W 14:29:32.940 NotebookApp] Timeout waiting for kernel_info reply from 759e137c-ad87-4cf3-9827-cd9e75ce0ce0
[I 14:29:34.943 NotebookApp] KernelRestarter: restarting kernel (4/5)
WARNING:root:kernel 759e137c-ad87-4cf3-9827-cd9e75ce0ce0 restarted
Error: Could not find or load main class com.twosigma.beakerx.scala.kernel.Scala
[W 14:29:37.952 NotebookApp] KernelRestarter: restart failed
[W 14:29:37.952 NotebookApp] Kernel 759e137c-ad87-4cf3-9827-cd9e75ce0ce0 died, removing from map.
ERROR:root:kernel 759e137c-ad87-4cf3-9827-cd9e75ce0ce0 restarted failed!
[W 14:29:37.967 NotebookApp] Kernel deleted before session
[W 14:29:37.967 NotebookApp] 410 DELETE /api/sessions/aa9d6ab1-03d9-4ddd-915b-f11c97ecfd76 (::1) 2.00ms referer=http://localhost:8888/notebooks/Untitled1.ipynb?kernel_name=scalax

Would I need more set on my path to find the main class?

[scottdraves]

you can follow the thread in the other issue -- but basically "conda install -c beakerx beakerx" works and pip does not.

[rgbkrk]

Ah great, I should be able to fix that manually so I can at least work with the kernel. Thanks Scott!

[scottdraves]

readme fixed 2593494