Checklist

• I added a descriptive title
• I searched open reports and couldn't find a duplicate

What happened?

According to the schema, each value under platforms must be dict[dict[str, str]]. However, #234 requires a workaround: to disable that a shortcut is created under a specific platform, the value for that platform must be null, i.e.:

{
  "platforms": {
    "linux-64": null
  }
}

The current schema, however, considers this invalid.

Conda Info

Conda Config

Conda list

Additional Context

No response