Add a new ?phasing pattern

This selects all packages that are being kept back due to phasing
on your system.

2 files changed, 12 insertions, 0 deletions

diff --git a/apt-pkg/cachefilter-patterns.cc b/apt-pkg/cachefilter-patterns.cc
index faf5735b8..6ef34c953 100644
--- a/apt-pkg/cachefilter-patterns.cc
+++ b/apt-pkg/cachefilter-patterns.cc
@@ -498,6 +498,8 @@ std::unique_ptr<APT::CacheFilter::Matcher> PatternParser::aPattern(std::unique_p
       return std::make_unique<Patterns::PackageIsObsolete>();
    if (node->matches("?origin", 1, 1))
       return std::make_unique<Patterns::VersionIsOrigin>(aWord(node->arguments[0]));
+   if (node->matches("?phasing", 0, 0))
+      return std::make_unique<Patterns::PackageIsPhasing>(file);
    if (node->matches("?section", 1, 1))
       return std::make_unique<Patterns::VersionIsSection>(aWord(node->arguments[0]));
    if (node->matches("?source-package", 1, 1))
diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 2d48a1cc9..5fc00377f 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -243,6 +243,16 @@ struct APT_HIDDEN PackageIsObsolete : public PackageMatcher
    }
 };
 
+struct APT_HIDDEN PackageIsPhasing : public PackageMatcher
+{
+   pkgCacheFile *Cache;
+   explicit PackageIsPhasing(pkgCacheFile *Cache) : Cache(Cache) {}
+   bool operator()(pkgCache::PkgIterator const &pkg) override
+   {
+      return (*Cache)->PhasingApplied(pkg);
+   }
+};
+
 struct APT_HIDDEN PackageIsUpgradable : public PackageMatcher
 {
    pkgCacheFile *Cache;