I understand that solving the problem is a low priority topic.

But that issue doesn't allow a clean build of the system. While it is solved would be better to disable or comment the file to allow a clean build, wouldn't be?

Joan Pujol wrote:

But that issue doesn't allow a clean build of the system.

Could you explain? Our Building Server and Generating Packages outlines the process we use and recommend and it works, on daily basis: http://build.tigase.org/jenkins/job/tigase-server/

Some tools may be overly eager, but thus this issue has low priority as it's possible to have clean builds.