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From sebb <seb...@gmail.com>
Subject Re: [LANG][GUMP] Take current Lang changes out of main Gump?
Date Wed, 18 Mar 2009 04:38:32 GMT
On 18/03/2009, Stefan Bodewig <bodewig@apache.org> wrote:
> On 2009-03-17, J├Ârg Schaible <joerg.schaible@gmx.de> wrote:
>
>
> > Hmmm. Actually it is possible if the Gump descriptor could be used to map a
>  > specific artifact to a different one, e.g. commons-lang:commons-lang:* to
>  > org.apache.commons:commons-lang-backcomp:3.x.
>
>
> Yes, that could work, but it still would require a 1:1 mapping of
>  artifacts used during the mvn build and artifacts built by Gump.
>  I.e. we'd need a backcompat jar that not only contained the "legacy"
>  classes but also the trunk content of commons-lang, it wouldn't be
>  possible to only have the "old" code in it because we can't have more
>  than one jar for commons-lang.
>
>  And then there is the problem of different projects sharing the same
>  local repository.  When one project gets the "normal" commons-lang
>  artifacts Gump's proxy will never be asked for it by later projects -
>  this can be solved by using separate local repositories for projects
>  that need the legacy code.
>
>
>  > Since CL backcomp must be dependent on CL, it is available
>  > transitively. But I don't know Gump well enough ...
>
>
> Gump doesn't provide the POMs, it uses them of the original
>  repository.  So far I didn't dare creating POMs based on the Gump
>  descriptors since the later lack a lot of information and even the
>  dependency list in the Gump descriptor may be incomplete because it is
>  just based on observations and not knowledge in many cases.

Maybe the Gump descriptor syntax could be extended to provide a means
of specifying replacements to be made in the POM?

This would tell Gump to edit the POM just before running Maven.

This would allow the change to be isolated in the Gump descriptor.

Just a thought.

>
>  Stefan
>
>
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