old_contents: import valideer
  from valideer.base import ValidationError as ValideerValidationError
  from ..exceptions import ValidationError
  
  schema = {
      "+name": "string",
      "+description": "string",
      "+version": "string",
      "+author": "string",
      "+source": "string",
      "+commands": [
          {
              "+name": "string",
              "+description": "string"
          }
      ],
      "tags": ["string"],
      "build": "boolean"
  }
  
  validator = valideer.parse(schema)
  
  def validate_manifest(manifest):
      try:
          return validator.validate(manifest)
      except ValideerValidationError as e:
          raise ValidationError(e)
  
new_contents: import valideer
  from valideer.base import ValidationError as ValideerValidationError
  from ...exceptions import ValidationError
  
  schema = {
      "+name": "string",
      "+description": "string",
      "+version": "string",
      "+author": "string",
      "+source": "string",
      "+commands": [
          {
              "+name": "string",
              "+description": "string"
          }
      ],
      "tags": ["string"],
      "build": "boolean"
  }
  
  validator = valideer.parse(schema)
  
  def validate_manifest(manifest):
      try:
          return validator.validate(manifest)
      except ValideerValidationError as e:
          raise ValidationError(e)
  
subject: fix typo