E: Unable to locate package libgl1-mesa-dev-hwe-16.04 E: Couldn't find any package by glob 'libgl1-mesa-dev-hwe-16.04' E: Couldn't find any package by regex 'libgl1-mesa-dev-hwe-16.04' error installing libgl1-mesa-dev-hwe-16.04 Reading package lists... Building dependency tree... ...