Dpkg::Deps::KnownFacts

Section: libdpkg-perl (3perl)
Updated: 2020-03-23
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NAME

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).

$facts = Dpkg::Deps::KnownFacts->new();: Creates a new object.
$facts->add_installed_package($package, $version, $arch, $multiarch): 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.
$facts->add_provided_package($virtual, $relation, $version, $by): Records that the ``$by'' package provides the $virtual package. $relation and $version correspond to the associated relation given in the Provides field (if present).
($check, $param) = $facts->check_package($package): $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This function is obsolete and should not be used.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.
$facts->evaluate_simple_dep(): 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check_package() is obsolete, it should not have been part of the public API.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.

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Time: 00:05:39 GMT, March 31, 2021