pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>me</groupId>
  <artifactId>project-root</artifactId>
  <version>0.1-SNAPSHOT</version>
  <packaging>pom</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <!--
      Defaults to make maven happy; they're overridden downstream.
      Modules that use the same Scala version can avoid declaring these properties, though.
    -->
    <scala.version>2.11.7</scala.version>
    <scala.binary.version>2.11</scala.binary.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.scala-lang</groupId>
      <artifactId>scala-library</artifactId>
      <version>${scala.version}</version>
    </dependency>
  </dependencies>

  <profiles>

    <profile>
      <id>scala-2.10</id>
      <activation>
        <property>
          <name>!disable-scala-2.10</name>
        </property>
      </activation>
      <modules>
        <module>thelib/2.10</module>
      </modules>
    </profile>

    <profile>
      <id>scala-2.11</id>
      <activation>
        <property>
          <name>!disable-scala-2.11</name>
        </property>
      </activation>
      <modules>
        <module>thelib/2.11</module>
      </modules>
    </profile>

  </profiles>

</project>