Could we have --exclude-modules option?

[Alan Bateman]

On 08/08/2022 14:41, Andrejus Chaliapinas wrote:
> Let me elaborate a bit - recent use case was when 2 jars were 
> exporting same package (such was fine in old classpath use case, but 
> not anymore for Java modules case). And challenge was to figure out 
> which exactly jar needs to be excluded from Java modules resolution 
> graph to make overall Java Modules validation work and not lead to a 
> conflict.
>
> Presence of either of those jars would satisfy obviously compilation, 
> so issue here is not about compilation itself. With proposed exclude 
> approach it would be much easier to exclude jar1 - do various 
> evaluations/tests and if anything failing - switch to jar2. And do all 
> that yet not touching Maven (other build tool) dependencies 
> aggregation inside some folder/local repo. And once reaching point of 
> passing set - adjust later dependencies in other places.
>
Have you tried java --validate-modules? This option will scan the module 
path split package for other issues so that you get a dump of all issues.

-Alan
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