Lintian tag information: virtual-package-depends-without-real-package-depends (type: warning)

Description (from lintian-explain-tags)

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.

Visibility: warning
Show-Always: no
Check: fields/package-relations

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