Update Manifest Version From Pom

Question

After releasing (and I know Tycho does not support that, but we made it work somehow) I want to change the version of the Manifest.MF automatically from the pom.xml - in the future even in the same build process.

While researching for how to implement a custom Maven plug-in I found the tycho-versions-plugin, which almost seems to do what I want, so I added it to the build:

<plugin>
    <groupId>org.eclipse.tycho</groupId>
    <artifactId>tycho-versions-plugin</artifactId>
    <version>${tycho-version}</version>
    <executions>
        <execution>
            <id>versions</id>
            <phase>validate</phase>
            <goals>
                <goal>set-version</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
            <newVersion>${project.version}</newVersion>
    </configuration>
</plugin>

Now this only works if the Manifest.MF and the pom.xml already have the same version, which is useless in my case. Is there some obscure parameter I'm missing or do I really have to develop my own plug-in for the exotic use-case of incrementing the version?

Answer 1

If someone wants to fix their own tycho-versions-plugin, here's what I did to make it work. In VersionsEngine I removed the if in the following method:

public void addVersionChange(String artifactId, String newVersion) throws IOException {
    MutablePomFile pom = getMutablePom(artifactId);

    // if (!newVersion.equals(pom.getVersion())) {
        addVersionChange(new VersionChange(pom, newVersion));
    // }
}

And I'm not entirely sure if that's necessary or even wise, but I changed the following method in BundleManifestManipulator:

private boolean isProjectVersionChange(ProjectMetadata project, VersionChange change) {
    MutableBundleManifest mf = getBundleManifest(project);
    return change.getArtifactId().equals(mf.getSymbolicName());
}