|  1. User Level. This toolchains.xml file provides configuration for a single user,
 |                 and is normally provided in ${user.home}/.m2/toolchains.xml.
 |
 |                 NOTE: This location can be overridden with the CLI option:
 |
 |                 -t /path/to/user/toolchains.xml
 |
 |  2. Global Level. This toolchains.xml file provides configuration for all Maven

  <groupId>org.apache.maven.its.mng4208</groupId>
  <artifactId>test</artifactId>
  <version>0.1</version>
  <packaging>jar</packaging>

  <name>Maven Integration Test :: MNG-4208</name>
  <description>
    Test that CLI properties specified by the user override project properties during interpolation.
  </description>

  <properties>
    <testProperty>FAILED</testProperty>
    <interpolatedProperty>${testProperty}</interpolatedProperty>

import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingException;

/**
 * Strategy to collect projects based on the <code>-f</code> CLI parameter or the pom.xml in the working directory.
 */
@Named("RequestPomCollectionStrategy")
@Singleton
public class RequestPomCollectionStrategy implements ProjectCollectionStrategy {

          <artifactId>a</artifactId>
          <version>0.1</version>
        </dependency>
      </dependencies>
    </profile>
    <profile>
      <id>profile-2</id>
      <!-- to be activated explicitly on the CLI by its id -->
      <dependencies>
        <dependency>
          <groupId>org.apache.maven.its.it0021</groupId>
          <artifactId>b</artifactId>
          <version>0.1</version>
        </dependency>

main is org.apache.maven.cli.MavenCli from plexus.core

set maven.conf default ${maven.home}/conf

[plexus.core]
load       ${maven.conf}/logging
optionally ${maven.home}/lib/ext/redisson/*.jar
optionally ${maven.home}/lib/ext/hazelcast/*.jar
optionally ${user.home}/.m2/ext/*.jar
optionally ${maven.home}/lib/ext/*.jar
load       ${maven.home}/lib/maven-*.jar

    /**
     * Describes the source of an execution.
     */
    public enum Source {

        /**
         * An execution that originates from the direct invocation of a goal from the CLI.
         */
        CLI,

        /**
         * An execution that originates from a goal bound to a lifecycle phase.
         */
        LIFECYCLE,
    }

    private Source source = Source.LIFECYCLE;

    /**

      <artifactId>maven-plugin</artifactId>
      <version>2.0-SNAPSHOT</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>commons-cli</groupId>
      <artifactId>commons-cli</artifactId>
      <version>1.0-beta-2</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>plexus</groupId>

@REM Apache Maven Startup Script
@REM
@REM Environment Variable Prerequisites
@REM
@REM   JAVA_HOME         (Optional) Points to a Java installation.
@REM   MAVEN_ARGS        (Optional) Arguments passed to Maven before CLI arguments.
@REM   MAVEN_BATCH_ECHO  (Optional) Set to 'on' to enable the echoing of the batch commands.
@REM   MAVEN_BATCH_PAUSE (Optional) set to 'on' to wait for a key stroke before ending.

# Apache Maven Startup Script
#
# Environment Variable Prerequisites
#
#   JAVA_HOME       (Optional) Points to a Java installation.
#   MAVEN_ARGS      (Optional) Arguments passed to Maven before CLI arguments.
#   MAVEN_OPTS      (Optional) Java runtime options used when Maven is executed.
#   MAVEN_SKIP_RC   (Optional) Flag to disable loading of mavenrc files.