{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.ferretlang.org/common/spdx-license.json",
  "title": "SPDX License Expression",
  "description": "A single-line SPDX license expression. Expression syntax and catalog membership are enforced by semantic validation.",
  "type": "string",
  "minLength": 1,
  "pattern": "^[^\\r\\n]+$"
}