Tycho downloads p2.indexes on every build
I'm building an RCP and several other plug-ins with Maven & Tycho. This works very fine, unless one issue:
On every(!) build, Tycho loads all needed eclipse librarys, even when the where already downloaded 10 seconds ago. Aren't they saved automatically in the local repository, or am I missing some configuration? all p2.index es. But this is also annoying. Can I turn this off, so that it'll only check once a week?
<properties>
<tycho-version>0.15.0</tycho-version>
</properties>
<repositories>
<repository>
<id>eclipse-indigo</id>
<layout>p2</layout>
<url>http://download.eclipse.org/releases/indigo</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>${tycho-version}</version>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
p2 artifacts as well as metadata files like content.jar and artifacts.jar are cached. p2 will do a timestamp comparison check only on each build (using HTTP HEAD) to check if the local cache is outdated.
If you want to avoid this, use maven offline mode (CLI option --offline)
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