Question

How to get local repository location (URI) from within Maven 3.x plugin?

Answer 1

Use Aether as described in this blog post.

/**
 * The current repository/network configuration of Maven.
 *
 * @parameter default-value="${repositorySystemSession}"
 * @readonly
 */
private RepositorySystemSession repoSession;

now get the local Repo through RepositorySystemSession.getLocalRepository():

LocalRepository localRepo = repoSession.getLocalRepository();

LocalRepository has a getBasedir() method, which is probably what you want.