The package declares a depends on a virtual package without listing a real package as an alternative first.
If this package could ever be a build dependency, it should list a real package as the first alternative to any virtual package in its Depends. Otherwise, the build daemons will not be able to provide a consistent build environment.
If it will never be a build dependency, this isn't necessary, but you may want to consider doing so anyway if there is a real package providing that virtual package that most users will want to use.
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit 43a81d7. For merge requests, please use the latest version in the Lintian check fields/package-relations.