const go/build.IgnoreVendor

3 uses

	go/build (current package)
		build.go#L433: 	IgnoreVendor
		build.go#L687: 		if mode&IgnoreVendor == 0 && srcDir != "" {
		build.go#L1141: 	if mode&AllowBinary != 0 || mode&IgnoreVendor != 0 ||