Notebook language always set to "python"

[minad]

The notebook language field in the pynb file is always set to "python". This is a problem if used with different language kernels e.g. https://github.com/minad/iruby

[Carreau]

Yes, this is a known issue, and we want to move the language in the top level metadata field instead of per cell, in next notebook format.

in the meantime, I suggest to tag notebooks in metadata like IJulia does, so that conversion can be eased later. (I saw that you already patch codemirror to get ruby mode, so it won't be too complicated for you (be carefull btw, your $getscript( will not work if notebook run with a prefixed URL), pr are welcomed on nbconvert to detect/highlight ruby.

[ellisonbg]

@minrk this is another issue related to the nbformat changes. I guess for 2.0 we just want to add the language field to notebook metadata?

[ellisonbg]

This is related to issue #3813 and PR #5272. Can we close this one with that as well?

[minrk]

We still don't have an API for setting it. The Julia profile has to use custom.js to get it working, which is not the way it should be done, ultimately. I think we should close this when we have an official mechanism, either via kernel_info request, or with the kernel metadata we add for 3.0.

[minad]

https://github.com/minad/iruby is also evolving currently. Can you tell me when the language agnostic features will be ready?

[takluyver]

Probably for 3.0 this summer.

[minrk]

This is fixed by the kernelspec stuff