Customize the Project's Libraries

If you do not want to use the packaged artifacts in your local repository and would want to use an alternate url, you can use:

<project>
  [...]
  <build>
    [...]
    <plugins>
      [...]
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-idea-plugin</artifactId>
        <configuration>
          <libraries>
            <library>
              <name>junit</name>
              <sources>file://C:/junit/src/main/java</sources>
              <classes>file://C:/junit/target/classes</classes>
            </library>
          </libraries>
        </configuration>
      </plugin>
      [...]
    </plugins>
    [...]
  </build>
  [...]
</project>

Or to exclude a dependency from appearing on IntelliJ IDEA's list of Libraries, you can do:

<project>
  [...]
  <build>
    [...]
    <plugins>
      [...]
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-idea-plugin</artifactId>
        <configuration>
          <libraries>
            <library>
              <name>junit</name>
              <exclude>true</exclude>
            </library>
          </libraries>
        </configuration>
      </plugin>
      [...]
    </plugins>
    [...]
  </build>
  [...]
</project>