return v, true
	}
	return "", false
}

// hasRedundantRoot returns true if the root list contains multiple requirements
// of the same module or a requirement on any version of the main module.
// Redundant requirements should be pruned, but they may influence version
// selection.
func (rs *Requirements) hasRedundantRoot() bool {
	for i, m := range rs.rootModules {

	if inWorkspaceMode() {
		// We don't need to update the mod file so return early.
		requirements = rs
		return rs, nil
	}

	mainModule := MainModules.mustGetSingleMainModule()

	if rs.hasRedundantRoot() {
		// If any module path appears more than once in the roots, we know that the
		// go.mod file needs to be updated even though we have not yet loaded any
		// transitive dependencies.
		var err error