How to build a multiplatform Eclipse update site with Tycho - eclipse

Question

On my PDE/Tycho Eclipse environment I want to build a plugin of type eclipse-repository which contains 3 features each one for a specific platform.
The eclipse-repository plugin reads all its configuration from a parent plugin which content is the following:
<properties>
<tycho.version>0.26.0</tycho.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<repositories>
<repository>
<id>neon</id>
<layout>p2</layout>
<url>http://download.eclipse.org/releases/neon/</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>${tycho.version}</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>target-platform-configuration</artifactId>
<version>${tycho.version}</version>
<configuration>
<environments>
<environment>
<os>win32</os>
<ws>win32</ws>
<arch>x86</arch>
</environment>
<environment>
<os>linux</os>
<ws>gtk</ws>
<arch>x86_64</arch>
</environment>
<environment>
<os>macosx</os>
<ws>cocoa</ws>
<arch>x86_64</arch>
</environment>
</environments>
</configuration>
</plugin>
</plugins>
</build>
When I try to build the eclpse-repository project I get an error:
[ERROR] Failed to execute goal org.eclipse.tycho:tycho-p2-repository-plugin:0.26.0:assemble-repository (default-assemble-repository) on project ... : Execution default-assemble-repository of goal org.eclipse.tycho:tycho-p2-repository-plugin:0.26.0:assemble-repository failed: Cannot resolve dependencies of MavenProject ...