FromDir inspects dir and its parents to determine the version control system and code repository to use.

RepoRootForImportPath analyzes importPath to determine the version control system, and code repository to use.

VCSTestHosts is the set of hosts supported by the vcs-test server.

VCSTestIsLocalHost reports whether the given URL refers to a local (loopback) host, such as "localhost" or "127.0.0.1:8080".

VCSTestRepoURL is the URL of the HTTP server that serves the repos for vcs-test.golang.org.

A Cmd describes how to use a version control system like Mercurial, Git, or Subversion.

An ImportMismatchError is returned where metaImport/s are present but none match our import path.

RepoRoot describes the repository root for a tree of source code.

Status is the current state of a local repository.

ModuleMode specifies whether to prefer modules when looking up code sources.