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[tycho-dev] About transitive dependencies resolution with pomConsider = True ?
Hi guys, 

i recently post a problem i have with Tycho resolution of maven dependency on stack overflow. I try many things whitout success, so i crosspost here and i pray for a little cue now ...

Thanks,
Kind regards,

--- here the post on stack http://stackoverflow.com/questions/41213928/transitive-dependencies-not-resolved-with-maven-dependency-and-tycho-pomconsider ---

I try to create an eclipse plugin using OSGI dependencies from two repositories, one with maven dependencies, and one with p2 dependencies :

<repositories>
<repository>
  <snapshots>
      <enabled>true</enabled>
  </snapshots>
  <id>bintray-anrgenstar-genstar-packages</id>
  <name>bintray</name>
  <url>http://dl.bintray.com/anrgenstar/genstar-packages</url>
  </repository>
</repositories>

<repository>
    <id>gama</id>
    <name>GAMA Snapshots</name>
    <url>http://gama.unthinkingdepths.fr</url>
    <layout>p2</layout>
    <releases>
        <enabled>true</enabled>
    </releases>
    <snapshots>
        <enabled>true</enabled>
    </snapshots>
</repository>

The project contain one parent pom.xml into ummisco.gaml.extensions.parent, which build the eclipse plugin ummisco.gaml.extensions.genstar :

  • (1) ummisco.gaml.extensions.parent
    • pom.xml
  • (2) ummisco.gaml.extensions.genstar
    • pom.xml
    • src/...
    • META-INF/MANIFEST.MF

(1) The ummisco.gaml.extensions.genstar parent pom.xml define the module<module>../ummisco.gaml.extensions.genstar</module> to build and call the Tycho maven plugin :

<modelVersion>4.0.0</modelVersion>
    <groupId>ummisco.gaml.extensions</groupId>
    <artifactId>ummisco.gaml.extensions.parent</artifactId>
    <version>1.7.0-SNAPSHOT</version>
    <packaging>pom</packaging>
    <modules>
        <module>../ummisco.gaml.extensions.genstar</module>
    </modules>
    <properties>
        <p2-maven.version>1.2.0-SNAPSHOT</p2-maven.version>
            <tycho.version>0.26.0</tycho.version>
        <project.version>1.7.0-SNAPSHOT</project.version>
    </properties>

    <repositories>
        <repository>
            <id>sonatype-nexus-snapshots</id>
            <name>Sonatype Nexus Snapshots</name>
            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>eclipse-mars</id>
            <url>http://download.eclipse.org/releases/mars</url>
            <layout>p2</layout>
        </repository>
        <repository>
            <id>eclipse-elk</id>
            <url>http://build.eclipse.org/modeling/elk/updates/nightly/</url>
            <layout>p2</layout>
        </repository>
        <repository>
            <id>eclipse-graphiti</id>
            <url>http://download.eclipse.org/graphiti/updates/milestones/</url>
            <layout>p2</layout>
        </repository>
        <repository>
            <id>gama</id>
            <name>GAMA Snapshots</name>
            <url>http://gama.unthinkingdepths.fr</url>
            <layout>p2</layout>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>
    <build>
        <plugins>
            <plugin>
                <groupId>org.eclipse.tycho</groupId>
                <artifactId>tycho-maven-plugin</artifactId>
                <version>${tycho.version}</version>
                <extensions>true</extensions>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.eclipse.tycho</groupId>
                <artifactId>tycho-p2-director-plugin</artifactId>
                <version>${tycho.version}</version>
            </plugin>
        </plugins>
    </build>
</project>

(2) The eclipse-plugin pom.xml of ummisco.gaml.extensions.genstar which need p2 and maven dependencies to work use the tycho <pomDependencies>consider</pomDependencies>option.

<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>ummisco.gaml.extensions.genstar</groupId>
  <artifactId>ummisco.gaml.extensions.genstar</artifactId>
  <packaging>eclipse-plugin</packaging>
  <parent>
    <groupId>ummisco.gaml.extensions</groupId>
    <artifactId>ummisco.gaml.extensions.parent</artifactId>
    <version>1.7.0-SNAPSHOT</version>
    <relativePath>../ummisco.gaml.extensions.parent/</relativePath>
  </parent>

   <dependencies>
    <dependency>
        <groupId>genstar.core</groupId>
        <artifactId>core</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>genstar.spll</groupId>
        <artifactId>spll</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>genstar.spin</groupId>
        <artifactId>spin</artifactId>
        <version>1.0</version>
    </dependency>
      <dependency>
        <groupId>genstar.gospl</groupId>
        <artifactId>gospl</artifactId>
        <version>1.0</version>
    </dependency>
</dependencies>

    <repositories>
        <repository>
          <snapshots>
              <enabled>true</enabled>
          </snapshots>
          <id>bintray-anrgenstar-genstar-packages</id>
          <name>bintray</name>
          <url>http://dl.bintray.com/anrgenstar/genstar-packages</url>
          </repository>
    </repositories>

  <build>
    <plugins>
    <plugin>
        <groupId>org.eclipse.tycho</groupId>
        <artifactId>target-platform-configuration</artifactId>
        <version>${tycho.version}</version>
        <configuration>
         <resolver>p2</resolver>
         <pomDependencies>consider</pomDependencies>
        </configuration>
    </plugin>
    </plugins> 
  </build>
</project>

The MANIFEST.MF for this eclipse-plugin is defined like that :

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Genstar
Bundle-SymbolicName: ummisco.gaml.extensions.genstar;singleton:=true
Bundle-Version: 1.7.0.qualifier
Bundle-RequiredExecutionEnvironment: JavaSE-1.8
Require-Bundle: msi.gama.core, core, gspl, spin, spll,
 javax.xml;bundle-version="1.3.4"

When i try to mvn clean install into ummisco.gaml.extensions.parent it seems that tycho download and recognize the dependencies defined in p2 (msi.gama.core for example), and defined in pom.xml (core, spll,gospl, spin OSGI bundle), but transitive dependencies of these bundles are not resolved.

[INFO] Fetching p2.index from http://gama.unthinkingdepths.fr/ (172B)
[INFO] Adding repository http://gama.unthinkingdepths.fr
[INFO] Resolving dependencies of MavenProject: ummisco.gaml.extensions.genstar:ummisco.gaml.extensions.genstar:1.7.0-SNAPSHOT @ /home/reyman/Projets/genstar-gama-plugin/ummisco.gaml.extensions.genstar/pom.xml
[INFO] {osgi.os=linux, osgi.ws=gtk, org.eclipse.update.install.features=true, osgi.arch=x86_64}
[ERROR] Cannot resolve project dependencies:
[ERROR]   Software being installed: ummisco.gaml.extensions.genstar 1.7.0.qualifier
[ERROR]   Missing requirement: core 1.0.0 requires 'package org.math.R 0.0.0' but it could not be found
[ERROR]   Cannot satisfy dependency: ummisco.gaml.extensions.genstar 1.7.0.qualifier depends on: bundle core 0.0.0
[ERROR]

I verify the transitive dependencies of the OSGI Bundle core 1.0.0 manifest (using mvn dependency:tree) and it seems correct, the manifest contain the declaration of dependencies in Import-Package, like org.math.R as you can see here :

Manifest-Version: 1.0
Bnd-LastModified: 1481896487741
Build-Jdk: 1.8.0_101
Built-By: reyman
Bundle-ManifestVersion: 2
Bundle-Name: core
Bundle-SymbolicName: core
Bundle-Version: 1.0
Created-By: Apache Maven Bundle Plugin
Export-Package: core.configuration;version="1.0.0";uses:="com.thoughtw
 orks.xstream,core.metamodel,core.metamodel.pop,core.metamodel.pop.io"
 ,core.metamodel;version="1.0.0",core.metamodel.geo;version="1.0.0";us
 es:="com.vividsolutions.jts.geom,core.metamodel",core.metamodel.geo.i
 o;version="1.0.0";uses:="com.vividsolutions.jts.geom,core.metamodel.g
 eo",core.metamodel.pop;version="1.0.0";uses:="com.vividsolutions.jts.
 geom,core.metamodel,core.metamodel.geo,core.util.data",core.metamodel
 .pop.io;version="1.0.0",core.util;version="1.0.0";uses:="org.apache.l
 ogging.log4j",core.util.R;version="1.0.0";uses:="org.math.R",core.uti
 l.data;version="1.0.0";uses:="core.util.excpetion",core.util.excpetio
 n;version="1.0.0",core.util.random;version="1.0.0",core.util.random.r
 oulette;version="1.0.0",core.util.stats;version="1.0.0"
Import-Package: com.thoughtworks.xstream;version="[1.4,2)",com.thought
 works.xstream.converters;version="[1.4,2)",com.thoughtworks.xstream.c
 onverters.extended;version="[1.4,2)",com.thoughtworks.xstream.io;vers
 ion="[1.4,2)",com.thoughtworks.xstream.io.xml;version="[1.4,2)",com.t
 houghtworks.xstream.mapper;version="[1.4,2)",com.vividsolutions.jts.g
 eom,core.metamodel;version="[1.0,2)",core.metamodel.geo;version="[1.0
 ,2)",core.metamodel.pop;version="[1.0,2)",core.metamodel.pop.io;versi
 on="[1.0,2)",core.util.data;version="[1.0,2)",core.util.excpetion;ver
 sion="[1.0,2)",core.util.random;version="[1.0,2)",org.apache.logging.
 log4j;version="[2.7,3)",org.math.R,org.rosuda.REngine,org.rosuda.REng
 ine.Rserve
Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
Tool: Bnd-3.2.0.201605172007

I really don't understand why the transitive dependencies are not automaticly resolved by tycho using the pom.xml dependency ... If tycho recognized the core, spll, spin, etc. package in the eclipse-plugin MANIFEST, why the transitive dependencies of core, spll, spin, gospl OSGI bundle are not downloaded ?

Do you think there is a solution for this problem ?

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