virtual-package-depends-without-real-package-depends

W: bitmask-vpn: virtual-package-depends-without-real-package-depends depends: polkit-1-auth-agent
N: 
N:    The package declares a depends on a virtual package without listing a
N:    real package as an alternative first.
N:    
N:    If this package could ever be a build dependency, it should list a real
N:    package as the first alternative to any virtual package in its Depends.
N:    Otherwise, the build daemons will not be able to provide a consistent
N:    build environment.
N:    
N:    If it will never be a build dependency, this isn't necessary, but you
N:    may want to consider doing so anyway if there is a real package
N:    providing that virtual package that most users will want to use.

Related: #9033