// repoRootForImportPathDynamic, but is otherwise not treated as a VCS command.
var vcsMod = &Cmd{Name: "mod"}

// vcsByCmd returns the version control system for the given
// command name (hg, git, svn, bzr).
func vcsByCmd(cmd string) *Cmd {
	for _, vcs := range vcsList {
		if vcs.Cmd == cmd {
			return vcs
		}
	}
	return nil
}