automatic VegaLite display in jupyterHub

[DougBurke]

This should be packed up into ihaskell-hvega but I'm not sure how to handle the difference between using in Jupyter notebooks and Jupyter lab, so probably just a different module for now - but if you have a VegaLite visualization created with toVegaLite , then you can

import qualified IHaskell.Display as IHD
import qualified Data.Text.Lazy as LT
import Data.Aeson.Text (encodeToLazyText)

instance IHD.IHaskellDisplay VegaLite where
    display vl =
        let js = LT.unpack (encodeToLazyText (fromVL vl))
        in pure (IHD.Display [IHD.vegalite js])

after which you should see the visualization automatically in JupyterLab:

So I suggest you go over to https://github.com/tweag/jupyterWith and try it out.

[DougBurke]

I've updated ihaskell-hvega to support this - but it's complicated due to supporting both old (notebook) and new (lab).

There's a new notebook - https://github.com/DougBurke/hvega/blob/master/notebooks/vegalite.ipynb - and a shell.nix file in that directory which lets you use jupyterWIth from tweag