Re: [maven-and-scala] Scala 2.10.x and Multiple Versions warning

[Josh Suereth]

Not currently, but patches welcome!

On Tue, May 28, 2013 at 5:00 PM, <thomas...@pnnl.gov> wrote:

I am seeing warnings with scala-maven-plugin 3.1.5 such as:

Expected all dependencies to require Scala version: 2.10.1

 c.b.a:x:2-SNAPSHOT requires scala version: 2.10.1

 f.e.d:y:1-SNAPSHOT requires scala version: 2.10.0

Multiple versions of scala libraries detected!

Except scala 2.10.0 and 2.10.1 and 2.10.x are binary compatible. Is there a way to suppress this warning?

--
 
---
You received this message because you are subscribed to the Google Groups "Maven and Scala" group.
To unsubscribe from this group and stop receiving emails from it, send an email to maven-and-sca...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[David Bernard]

Workaround : disable the check

http://davidb.github.io/scala-maven-plugin/compile-mojo.html#checkMultipleScalaVersions

2.10.1 and 2.10.0 are the first binary compatible version at major.minor level

[m...@41concepts.com]

A little late I know, but I got the same problem today with scala test using older scala 2.10.0 instead of scala 2.10.3 and seemingly got it solved by using maven exclude. I.e.

<dependencies>
        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-library</artifactId>
            <version>2.10.3</version>
        </dependency>
        <dependency>
              <groupId>org.scalatest</groupId>
              <artifactId>scalatest_2.10</artifactId>
              <version>2.0.RC2</version>
              <scope>test</scope>
              <exclusions>
                  <exclusion>
                      <!-- make sure wrong scala version is not pulled in -->
                      <groupId>org.scala-lang</groupId>
                    <artifactId>scala-library</artifactId>
                  </exclusion>
              </exclusions>
        </dependency>
 </dependencies>

[David Bernard]

Since scala-maven-plugin 3.1.6 you can define scalaCompatVersion (via property or configuration)

see http://davidb.github.io/scala-maven-plugin/compile-mojo.html#scalaCompatVersion

So you can try <scalaCompatVersion>2.10</scalaCompatVersion>

--

[Eyal Farago]

David, 

I couldn't get this to work, can you explain where should this be added? is this a property or a configuration of the plug-in?

one more thing,

in my organization, the scala plugin is configured in the org-pom, all projects inherit the org-pom as their parent (or ancestor).

I've tried adding youre suggetion as a property in one of the deriving poms - no go :-(

does it have to go in the org-pom? is this supposed to be a child element of the scala-plugin? (doesn't make sense as the Scala.version is a property).

thanks,

Eyal.

[David Bernard]

Hi,

Use <scalaCompatVersion>2.10</scalaCompatVersion> as child of <configuration> for the scala-maven-plugin.

Or define the property : scala.compat.version (see http://davidb.github.io/scala-maven-plugin/compile-mojo.html#scalaCompatVersion) from command line or as child of <properties>

Hope it's clearer.

[Eyal Farago]

Defining it as a property didn't make any difference,I'll try the configuration approach later today when I make it to the office.

Does specifying the exact scala version shaddows the compatability version?

Eyal.

[David Bernard]

Can you send

* the console output with the error messages

* the fragment of pom with properties, dependencies, plugin configuration

[Eyal Farago]

Hi David,

I'm attaching the relevant parts of the effective pom (as dumped by mvn help:effective-pom) and the build output, as you can see configuring the scalaCompatVersion is not working (I also attempted the property approach), the warning still pops up.

I'd appreciate your assistance.

in section build/pluginManagement:

<plugin>

        <groupId>net.alchim31.maven</groupId>

        <artifactId>scala-maven-plugin</artifactId>

        <version>3.1.5</version>

        <executions>

          <execution>

            <id>compile</id>

            <phase>compile</phase>

            <goals>

              <goal>compile</goal>

            </goals>

            <configuration>

              <scalaCompatVersion>2.10</scalaCompatVersion>

              <args>

                <arg>-deprecation</arg>

                <arg>-feature</arg>

              </args>

            </configuration>

          </execution>

          <execution>

            <id>test-compile</id>

            <phase>test-compile</phase>

            <goals>

              <goal>testCompile</goal>

            </goals>

            <configuration>

              <scalaCompatVersion>2.10</scalaCompatVersion>

              <args>

                <arg>-deprecation</arg>

                <arg>-feature</arg>

              </args>

            </configuration>

          </execution>

          <execution>

            <id>processResources</id>

            <phase>process-resources</phase>

            <goals>

              <goal>compile</goal>

            </goals>

            <configuration>

              <scalaCompatVersion>2.10</scalaCompatVersion>

              <args>

                <arg>-deprecation</arg>

                <arg>-feature</arg>

              </args>

            </configuration>

          </execution>

        </executions>

        <configuration>

          <scalaCompatVersion>2.10</scalaCompatVersion>

          <args>

            <arg>-deprecation</arg>

            <arg>-feature</arg>

          </args>

        </configuration>

      </plugin>

in properties:

<scala.compat.version>2.10</scala.compat.version>

<scala.version>2.10.3</scala.version>

build output:

eyal@ilpceyalf ~/actimize_slns/bs_infra2/bs_infra/bs_infra_pure (SR133899_scala_2_10) $ mvn clean compile

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building infra_pure 2.0.1-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[INFO]

[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ bs_infra_pure ---

[INFO] Deleting F:\actimize_slns\bs_infra2\bs_infra\bs_infra_pure\target

[INFO]

[INFO] --- maven-enforcer-plugin:1.2:enforce (enforce-java) @ bs_infra_pure ---

[INFO]

[INFO] --- maven-enforcer-plugin:1.2:enforce (enforce-ais) @ bs_infra_pure ---

[INFO]

[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ bs_infra_pure ---

[debug] execute contextualize

[INFO] Using 'UTF-8' encoding to copy filtered resources.

[INFO] skip non existing resourceDirectory F:\actimize_slns\bs_infra2\bs_infra\bs_infra_pure\src\main\resources

[INFO]

[INFO] --- scala-maven-plugin:3.1.5:compile (processResources) @ bs_infra_pure ---

[WARNING]  Expected all dependencies to require Scala version: 2.10.3

[WARNING]  org.scalatest:scalatest_2.10:2.0 requires scala version: 2.10.0

[WARNING] Multiple versions of scala libraries detected!

[INFO] F:\actimize_slns\bs_infra2\bs_infra\bs_infra_pure\src\main\java:-1: info: compiling

[INFO] F:\actimize_slns\bs_infra2\bs_infra\bs_infra_pure\src\main\scala:-1: info: compiling

[INFO] Compiling 27 source files to F:\actimize_slns\bs_infra2\bs_infra\bs_infra_pure\target\classes at 1388402603472

[David Bernard]

"Since scala-maven-plugin 3.1.6 you can define scalaCompatVersion (via property or configuration)"

You use version 3.1.5

[Eyal Farago]

just figured out myself (-X do some magic), you beat me to the browser :-)

thanks for the quick reply.

[David]

Hi,

I do this:

<configuration>
        <scalaCompatVersion>2.10</scalaCompatVersion>
        <scalaVersion>2.10.4</scalaVersion>
    </configuration>
</plugin>

and then get this:

[WARNING]  com.typesafe.akka:akka-actor_2.11:2.3.6 requires scala version: 2.11.2

[WARNING] Multiple versions of scala libraries detected!

There is no place in my pom.xml where I specify the akka-actor version.

Can someone tell me where alchim31 might be picking up this version of akka-actor?

On Tuesday, May 28, 2013 5:00:27 PM UTC-4, thomas...@pnnl.gov wrote:

I am seeing warnings with scala-maven-plugin 3.1.5 such as:

Expected all dependencies to require Scala version: 2.10.1

 c.b.a:x:2-SNAPSHOT requires scala version: 2.10.1

 f.e.d:y:1-SNAPSHOT requires scala version: 2.10.0

Multiple versions of scala libraries detected!

[David Bernard]

Hi,

you can run

   mvn dependency:tree

see http://maven.apache.org/plugins/maven-dependency-plugin/index.html for details

--

---
You received this message because you are subscribed to the Google Groups "Maven and Scala" group.
To unsubscribe from this group and stop receiving emails from it, send an email to maven-and-sca...@googlegroups.com.

For more options, visit https://groups.google.com/d/optout.