Add support for directives on directive definitions

At a glance

• Identifier: #1206
• Stage: RFC1: Proposal
• Champion: @BoD
• PR: Add support for directives on directive definitions

Timeline

• Added to 2026-01-15 WG agenda
• Commit pushed: Directives are not types on 2025-12-19 by @BoD
• Spec PR created on 2025-12-18 by BoD
• Commit pushed: Reformat with prettier on 2025-12-18 by @BoD
• Commit pushed: Change the directive definition syntax to have applied directives aft… on 2025-12-02 by @BoD
• 3 commits pushed on 2025-11-27:
  • Add directive extensions by @BoD
  • Make @deprecated applicable to DIRECTIVE_DEFINITION by @BoD
  • Update introspection by @BoD
• Commit pushed: Add support for directives on directives on 2021-12-02 by @IvanGoncharov

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