Mybinder does not render Vegalite plots

[mbeltagy]

When executing the cells at
https://hub.gke.mybinder.org/user/davidanthoff-bindertest-iukaoilz/notebooks/src/main.ipynb
The plot does not render, instead the output is

I tried to fix that running

] update 

and restarting the kernel. The plots rendered fine at that point.

I then compared the Project.toml and Manifest.toml and found changes in Manifest.toml file. So I created a pull request #1 in the hope that it will fix the situation.

Just to verify I created my own binder on the branch with the updated Manifest.toml file.

This time I got a slightly different, though still unsatisfactory output

[davidanthoff]

I think this is due to a bug in the Julia package manager. I opened a PR with a workaround for mybinder.org. For now you can run Pkg.resolve() in the notebook, and then it should all work. Using JupyterLab on mybinder.org would probably also work out of the box. Thanks for reporting!