rem: return start == other.start && (start->Type != pkgCache::Dep::Conflicts || prv == other.prv);
add: return pkg == other.pkg && ver == other.ver;
context:   bool operator==(const aptitude_resolver_dep &other) const  {    return start == other.start &&      (start->Type != pkgCache::Dep::Conflicts || prv == other.prv);  }