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https://issues.apache.org/jira/browse/LUCENE-3945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245625#comment-13245625
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Robert Muir commented on LUCENE-3945:
-------------------------------------

{quote}
If people want to pursue this, We can always refactor – either to generalize 
the name/description of of "LicenseCheckTask" or to refactor this out into it's 
own custom task (and do an extra jar crawl).
{quote}

I don't think we should do an extra crawl, we can just name it 
DependencyCheckTask.
Dependencies need to have licensing information and sha checksums, and 'ant 
validate' 
fails if they don't.

                
> we should include checksums for every jar ivy fetches in svn & src releases 
> to verify the jars are the ones we expect
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3945
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3945
>             Project: Lucene - Java
>          Issue Type: Task
>            Reporter: Hoss Man
>             Fix For: 3.6, 4.0
>
>         Attachments: LUCENE-3945.patch
>
>
> Conversation with rmuir last night got me thinking about the fact that one 
> thing we lose by using ivy is confidence that every user of a release is 
> compiling against (and likely using at run time) the same dependencies as 
> every other user.
> Up to 3.5, users of src and binary releases could be confident that the jars 
> included in the release were the same jars the lucene devs vetted and tested 
> against when voting on the release candidate, but with ivy there is now the 
> possibility that after the source release is published, the owner of a domain 
> where these dependencies are hosted might change the jars in some way w/o 
> anyone knowing.  Likewise: we as developers could commit an ivy.xml file 
> pointing to a specific URL which we then use for and test for months, and 
> just prior to a release, the contents of the remote URL could change such 
> that a JAR included in the binary artifacts might not match the ones we've 
> vetted and tested leading up to that RC.
> So i propose that we include checksum files in svn and in our source releases 
> that can be used by users to verify that the jars they get from ivy match the 
> jars we tested against.

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