Altair: Can't enable experimental features

[aoudiamoncef]

Describe the bug
Start from v2.3.8+, it's not possible to enable experimental feature as GraphiQL Explorer.

To Reproduce
Steps to reproduce the behaviour:

1. Go to 'settings'
2. Click on 'Enable experimental...'
3. Or add the key 'enableExperimental'
4. Restart Altair.

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu
• Version: 18.04.3 LTS

Additional context
Altair installed via Snap

[imolorhe]

From your screenshot, the experimental features are enabled. If you're looking for the GraphiQL explorer, you need to add it to the plugins list in the settings as altair-graphql-plugin-graphql-explorer.

[imolorhe]

[imolorhe]

Also according to your screenshot, you have the v2.4.0 installed via snap. So I assume your snap issue #1120 is fixed?

[aoudiamoncef]

Hi @imolorhe,
I always have the error message at startup but after thant Altair runs normally. I still can't enable experimental from the GUI, i should use expert mode and add the key manually.

It could be very interesting to get the list of available plug-ins in a drop-down list or something like this.

[imolorhe]

The plugins are still in beta which is why they are behind the experimental features flag. I wouldn't be changing how the plugins are discovered until after the beta stage.