EmptyGlobalAssignment: version 8.2.2: line 21: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 8.2.3: line 21: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 8.2.4: line 21: empty global assignment: IUSE=""
  EmptyGlobalAssignment: version 8.3.0: line 21: empty global assignment: IUSE=""