Eclipse Community Forums: TMF (Xtext) » How to get rid of Tycho's downloading of p2.indexes on every build

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How to get rid of Tycho's downloading of p2.indexes on every build [message #1256305]

Tue, 25 February 2014 04:40

Eclipse User

I'm using Tycho to support maven in order to automatically build my xtext's projects.

However each time Tycho try to download the p2 indexes.

I know the mvn -o option. But it sometimes cannot build using that option.

Is there a way we can use Tycho without referencing the p2 indexes or create a project cache?

Thanks.

Re: How to get rid of Tycho's downloading of p2.indexes on every build [message #1256321 is a reply to message #1256305]

Tue, 25 February 2014 05:04

Eclipse User

Hi,

you can materialize a local p2 repository out of your target platform and use this. So you're independent of remote repositories.
We do this e.g. in the Spray project: http://code.google.com/a/eclipselabs.org/p/spray/source/browse/releng/org.eclipselabs.spray.repository/pom.xml

So with mvn clean install -Pmodules-targetplatform you materialize the aggregated P2 repository locally and with mvn clean install -Dlocal-build you use this local P2 repository during build.

You even can set this local P2 repository in your Eclipse as target platform instead using the target file.

Joerg

Re: How to get rid of Tycho's downloading of p2.indexes on every build [message #1256344 is a reply to message #1256321]

Tue, 25 February 2014 05:27

Eclipse User

Another way is to use a local Nexus instance (http://www.sonatype.org/nexus/) as proxy (by default it caches the access to the remote repositories one day) and then use the local Nexus URI as repository in the pom (resp. configured as mirror in the Maven settings.xml).

Re: How to get rid of Tycho's downloading of p2.indexes on every build [message #1257258 is a reply to message #1256321]

Wed, 26 February 2014 03:15

Eclipse User

Hi Joerg,

Thanks for your help.

We currently use archiva to host our internal repository so I will try to learn from Spray project.

Thanks.

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