From c94b507b92b3d833761f3e416d4d5bba709bf87f Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Thu, 15 Aug 2019 13:40:31 +0200
Subject: Add ?virtual pattern

This matches any package that does not have versions.
---
 apt-pkg/cachefilter-patterns.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'apt-pkg/cachefilter-patterns.h')

diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 993839425..d37da815f 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -221,6 +221,14 @@ struct PackageIsUpgradable : public PackageMatcher
       return Pkg->CurrentVer != 0 && (*Cache)[Pkg].Upgradable();
    }
 };
+
+struct PackageIsVirtual : public PackageMatcher
+{
+   bool operator()(pkgCache::PkgIterator const &Pkg) override
+   {
+      return Pkg->VersionList == 0;
+   }
+};
 } // namespace Patterns
 } // namespace Internal
 } // namespace APT
-- 
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