Complex sentence: However, this comes at the cost of executing PKGBUILDs not validated by a trusted person; as a result, Arch developers have stated that the utilities for automatically finding, downloading and executing PKGBUILDs will never be included in the official repositories.
Split into simpler sentences: However, this comes at the cost of executing PKGBUILDs which were not validated by a trusted person. For this reason, Arch developers have stated that tools for automatically finding, downloading and executing PKGBUILDs will never be included in the official repositories.