Dpkg::Deps::KnownFacts - list of installed real and virtual packages
This object represents a list of installed packages and a list of virtual packages provided (by the set of installed packages).
Creates a new object.
Records that the given version of the package is installed. If $version/$arch is undefined we know that the package is installed but we don't know which version/architecture it is. $multiarch is the Multi-Arch field of the package. If $multiarch is undef, it will be equivalent to "Multi-Arch: no".
Note that $multiarch is only used if $arch is provided.
Records that the "$by" package provides the $virtual package. $relation and $version correspond to the associated relation given in the Provides field (if present).
$check is one when the package is found. For a real package, $param contains the version. For a virtual package, $param contains an array reference containing the list of packages that provide it (each package is listed as [ $provider, $relation, $version ]).
This function is obsolete and should not be used. Dpkg::Deps::KnownFacts is only meant to be filled with data and then passed to Dpkg::Deps methods where appropriate, but it should not be directly queried.
This method is private and should not be used except from within Dpkg::Deps.
New option: Dpkg::Deps::KnownFacts->add_installed_package() now accepts 2 supplementary parameters ($arch and $multiarch).
Deprecated method: Dpkg::Deps::KnownFacts->check_package() is obsolete, it should not have been part of the public API.
Mark the module as public.