Ability to only load a specific list of plugins

[simonw]

I'm going to try and get this working through an environment variable, so that you can start Datasette and it will only load a subset of plugins including those that use the register_commands() hook.

Initial research on this:

• Patterns to enable and disable plugins? pytest-dev/pluggy#422

[simonw]

Figured this out so far with the help of GPT-4: https://chat.openai.com/share/0e785865-621b-4fb3-ba05-7449e57c8496

Now this works:

DATASETTE_LOAD_PLUGINS=datasette-write-ui datasette plugins

[
    {
        "name": "datasette_write_ui",
        "static": true,
        "templates": true,
        "version": null,
        "hooks": [
            "extra_template_vars",
            "register_routes"
        ]
    }
]

Or multiple plugins:

DATASETTE_LOAD_PLUGINS=datasette-write-ui,datasette-pretty-json datasette plugins

Outputs:

[
    {
        "name": "datasette_pretty_json",
        "static": false,
        "templates": false,
        "version": null,
        "hooks": [
            "render_cell"
        ]
    },
    {
        "name": "datasette_write_ui",
        "static": true,
        "templates": true,
        "version": null,
        "hooks": [
            "extra_template_vars",
            "register_routes"
        ]
    }
]