// Accessors
inline StateCache &operator [](PkgIterator const &I) {return PkgState[I->ID];};
+ inline StateCache &operator [](PkgIterator const &I) const {return PkgState[I->ID];};
inline unsigned char &operator [](DepIterator const &I) {return DepState[I->ID];};
/** \return A function identifying packages in the root set other