activate checkstyle automatically on maven project import

[hohwille]

We have been trying to activate checkstlye for projects automatically with m2e in Eclipse.
This was so easy with maven-eclipse-plugin:
http://maven.apache.org/plugins/maven-eclipse-plugin/examples/configure-checkstyle.html

However with m2e this is a big problem. We found and tested this project:
https://code.google.com/p/m2e-extensions/
However it seems to be dead and does not work with recent versions of Eclipse and m2e if it ever worked at all. See also:
https://code.google.com/p/m2e-extensions/wiki/Checkstyle

Next we tried this one:
https://github.com/m2e-code-quality/m2e-code-quality
It installs properly but seems to do nothing. There are no working step-by-step instructions that worked for us...

General infos how it could practically work are described here:
https://docs.sonatype.org/display/M2ECLIPSE/Customizable+build+lifecycle+mapping+for+m2e+extensions+developers

We also tried to create our own eclipse plugin for this but had no luck either.

[hohwille]

https://dev.eclipse.org/mhonarc/lists/m2e-dev/threads.html#01770

[hohwille]

We could try a workaround using this approach:
https://wiki.eclipse.org/M2E_compatible_maven_plugins

We write a mojo that "hacks" the .project file by adding nature and builder for checkstyle. Then we configure m2e to trigger this as described in the link. I am not sure if it will workout easily but it is worth a try. The Mojo would need to be deployed into nexus for the moment to make it available for developers. Not a great solution but if it works out better than nothing.

[hohwille]

https://www.eclipse.org/m2e/documentation/m2e-extension-development.html