Hydra / Hydrogen conflict

[zepadovani]

Not sure if it is an Hydrogen, an Hydra or an Jupyter bug:

if I've Hydrogen enabled and try to run lines of code in Hydra toggled file, I get this:

"No kernel for grammar JavaScript found

Check that the language for this file is set in Atom, that you have a Jupyter kernel installed for it, and that you have configured the language mapping in Hydrogen preferences."

Any ideas on how to solve this?

[ojack]

Oh wow, I have no idea. If you open the developer console in atom, do any additional errors show up?

[samkirkham]

Just saw this while looking for other issues, but in case this isn't yet solved - this seems to be a keybinding conflict between hydrogen and other plug-ins that use the same keybindings (i.e. this isn't the fault of Hydra). I fixed it by adding the following to keymap.cson (initially had to do this fix for Tidal Cycles, as you can see below):

'atom-workspace atom-text-editor[data-grammar~=\'tidalcycles\']': 'cmd-enter': 'tidalcycles:eval-multi-line' 'shift-enter': 'tidalcycles:eval'

...but alternatively, as a quick fix: just disable the Hydrogen plug-in and it should resolve the problem.