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From Stefan Bodewig <>
Subject Re: [GUMP@vmgump]: Project commons-id (in module commons-sandbox) failed
Date Mon, 27 Aug 2007 07:12:30 GMT
On Sat, 25 Aug 2007, Dennis Lundberg <> wrote:
> Stefan Bodewig wrote:
>> On Sat, 25 Aug 2007, Dennis Lundberg <> wrote:
>>> Gump needs to run maven in online mode, so it can download the
>>> necessary dependencies, see below...
>> No, if it did, it wouldn't be serving the purpose it is used for.
>> If Gump runs Maven in online mode it cannot control the artifacts
>> Maven builds against.
> OK, I'm not up to speed on the purpose of Gump.

No problem.

Gump tries to be an early warning system for backwards incompatible
changes.  It detects a backwards incompatible change in a project A by
building all other projects that state a dependency on any version of
A against trunk of A instead of the specified version.

If for example velocity changed in a way that would break the
commons-id build, then commons-id would get notified (yes, it would be
nicer if velocity got the nag mail, we know).

In order to work, Gump must completely ignore the version a project
asks for and instead will always provide a project with the very
latest versions of its dependencies.

>> The Gump project descriptor of commons-id must list all
>> dependencies, so Gump can produce the proper jar overrides.
> The Gump project descriptor, is that file that resides on the Gump
> server?

The files live in <>
and any ASF committer has write access.  commons-id would be in

>> But are these
>>>> dom4j-1.4.jar commons-jelly-1.0-RC1.jar
>>>> commons-jelly-tags-jsl-1.0.jar commons-jelly-tags-log-1.0.jar
>>>> commons-jelly-tags-velocity-1.0.jar
>>>> commons-jelly-tags-xml-1.1.jar (try downloading from
>>>> maven-1.0.2.jar maven-model-3.0.0.jar velocity-1.4.jar
>>>> commons-jelly-tags-fmt-1.0.jar
>> really dependencies of commons-id?  Or are they needed by some
>> Maven plugin that is used by the build but not by any
>> (most?)  other Maven builds under Gump?
> None of these are listed as dependencies in either the M1
> project.xml or the M2 pom.xml. To me they look like Maven 1 internal
> or plugins dependencies.

I thought so.

> That being said, Commons Id doesn't use any "weird" plugins:
>      <report>maven-changes-plugin</report>
>      <report>maven-checkstyle-plugin</report>
>      <report>maven-cobertura-plugin</report>
>      <report>maven-javadoc-plugin</report>
>      <report>maven-junit-report-plugin</report>
>      <report>maven-jxr-plugin</report>
>      <report>maven-license-plugin</report>

Has any of them been added lately?  It's not as if commons-id had been
failing for months.

Then again Gump is now working on a fresh machine, maybe we are simply
missing one of those jars that have been present in the old local

We know that we need to run Maven in online mode at least once after a
fresh install so it can download its internal dependenices.  Given
that any other Maven1 project seems to work (well at least they break
in different ways), it probably is one of those plugins - and nobody
else seems to be using it as well.

I'll manually run Maven in online mode once, this should silence the
nag mails.


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