Eclipse warning: More than one scala library found in the build path

[muhuk]

I am getting this warning on my Scala only project.

I have these two in my Scala Library container:

/home/muhuk/lib/eclipse/plugins/org.scala-lang.scala-library_2.11.8.v20160304-115712-1706a37eb8.jar
/home/muhuk/lib/eclipse/plugins/org.scala-lang.scala-reflect_2.11.8.v20160304-115712-1706a37eb8.jar

Also in the Maven Dependencies:

M2_REPO/org/scala-lang/scala-library/2.11.8/scala-library-2.11.8.jar - /home/muhuk/.m2/repository/org/scala-lang/scala-library/2.11.8/scala-library-2.11.8.jar
M2_REPO/org/scala-lang/scala-reflect/2.11.7/scala-reflect-2.11.7.jar - /home/muhuk/.m2/repository/org/scala-lang/scala-reflect/2.11.7/scala-reflect-2.11.7.jar

Plugin versions:

Eclipse SDK 4.5.2.M20160212-1500
Scala IDE for Eclipse   4.4.0.v-2_11-201604010957-ff530d2
Maven Integration for Scala IDE 0.5.1.201410131304

My POM file like like:

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <encoding>UTF-8</encoding>
    <scala.version>2.11.8</scala.version>
    <scala.compat.version>2.11</scala.compat.version>
</properties>

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

    <!-- Test -->
    <dependency>
        <groupId>org.scalatest</groupId>
        <artifactId>scalatest_${scala.compat.version}</artifactId>
        <version>2.2.6</version>
        <scope>test</scope>
    </dependency>
    ...
    <dependency>
        <groupId>org.scalacheck</groupId>
        <artifactId>scalacheck_${scala.compat.version}</artifactId>
        <version>1.12.5</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.scalamock</groupId>
        <artifactId>scalamock-scalatest-support_${scala.compat.version}</artifactId>
        <version>3.2.2</version>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <sourceDirectory>src/main/scala</sourceDirectory>
    <testSourceDirectory>src/test/scala</testSourceDirectory>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <version>3.2.1</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <!-- disable surefire -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.18.1</version>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>
            <!-- enable scalatest -->
            <plugin>
                <groupId>org.scalatest</groupId>
                <artifactId>scalatest-maven-plugin</artifactId>
                <version>1.0</version>
                <configuration>
                    <reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
                    <junitxml>.</junitxml>
                    <stdout>W</stdout>
                    <filereports>WDF TestSuite.txt</filereports>
                </configuration>
                <executions>
                    <execution>
                        <id>test</id>
                        <goals>
                            <goal>test</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

---

This is on a fresh Eclipse install. Before, removing and then adding the scala nature didn't fix the issue. So I tried to reinstall m2e stuff. JDT plugin ended up deleting eclipse binary when I uninstalled it. So I ended up creating everything from scratch.

Internets say it is just a warning, don't pay attention but I'd like to think there is a way to get rid of this warning.

Adding scala-reflect as a maven dependency brings the correct version, but doesn't help with the warning. Also, please note that both Scala IDE and maven are using 2.11.8.