Verification fails for Maven project with multiple modules

[kaklakariada]

Running mvn verify on a multi-module maven project fails with the following error message:

E-PK-CORE-90: Could not find .git directory in project-root '/home/user/git/project/sub-module'.

Workarounds

Workaround 1

mvn verify --projects .

Workaround 2

• Remove PK plugin from sub-modules
• Add PK plugin only to root module
• Exclude warning

  W-PK-CORE-151: Pom file '.*' contains no reference to project-keeper-maven-plugin.
  

Proposed fix

• Require plugin project-keeper-maven-plugin only in pom.xml in root directory.
• Fail if plugin is present in any other module