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I have a maven module which has some dependencies. In a certain profile, I want to exclude some of those dependencies (to be exact, all dependencies with a certain group id). They however need to be present in all other profiles. Is there a way to specify exclusions from the dependencies for a profile?
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Exclusions are set on a specific dependency in your POM, and are targeted at a specific groupId and artifactId. When you build your project, that artifact will not be added to your project's classpath by way of the dependency in which the exclusion was declared.
In order to exclude these special dependencies from the main project, we can apply Maven's <optional> tag to them. This forces any user who wants to use those dependencies to declare them explicitly. However, it does not force those dependencies into a project that doesn't need them.
While adding dependencies, we can use the optional flag, or set the scope to “provided”. In both cases, the dependencies will be in the classpath of the module where they are declared, but they will not be added transitively in other projects using the module that defines them as dependencies.
To my knowledge, no, you can't deactivate dependencies (you can exclude transitive dependencies but this is not what you are asking for) and yes, what you are currently doing with the POM (manually editing it) is wrong.
So, instead of removing dependencies, you should put them in a profile and either:
A third option would be (not profile based):
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