[MNG-7092] Core mechanism for skipping mojos

**[Peter Palaga](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=ppalaga)** opened **[MNG-7092](https://issues.apache.org/jira/browse/MNG-7092?redirect=false)** and commented

The current practice is that mojo authors have to implement skipping on their side. It is easy to do, but it has a couple of disadvantages:

* Not every mojo has a skip option
* The naming conventions differ among mojos
* Performance: the dependencies of the mojo need to be resolved, downloaded, classes loaded and initialized, config injected only to eval the skip option and do nothing. I have collected some numbers in https://peter.palaga.org/2020/10/29/skipping-maven-mojos-properly.html .

I wonder if Maven core could provide a mechanism for skipping mojos without the above drawbacks?

There could be some global naming convention, so that `-Dorg.my-org.my-maven-plugin.my-mojo.skip` or just `-Dmy.my-mojo.skip` would skip `my-mojo`.

WDYT?

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**Issue Links:**
- [MNG-8049](https://issues.apache.org/jira/browse/MNG-8049) Provide a generic way to "target" some step in build

- [MNG-7691](https://issues.apache.org/jira/browse/MNG-7691) Provide a generic way to skip Maven Goals for a specified plugin

1 votes, 3 watchers