What happened

Currently the Settings struct in manifest.go defines both EventSubscriptions and Interactivity as struct values rather than pointers, which means omitempty will never take effect.

This results in an empty EventSubscriptions or Interactivity object being passed to Slack as an empty JSON object that is impossible to get rid of and requires you to work around it by doing things like setting an EventSubscriptions object even when you're not using oauth scopes that would require these fields.

Expected behavior

These should be pointers and be omitted when serializing to JSON

Steps to Reproduce

• Create a Slack app without scopes for EventSubscriptions
• Create a slack.Manifest{} object without setting EventSubscriptions
• Call CreateManifestContext(ctx, manifestStruct, your config token)
• See the error claiming you have an invalid manifest because your EventSubscriptions.RequestUrl is invalid
• Curse quietly
• Print the object in logging and see the struct definition
• Open this issue
• Open a PR to fix it.

Versions

• Go: 1.24
• slack-go/slack: v0.17.3