andreas at grapentin.org wants to notify you that the following packages may be out-of-date: * quaternion 0.0.4-1 [pcr] (any): https://parabolagnulinux.org/packages/pcr/any/quaternion/ The user provided the following additional text: 0.0.5 is in the AUR: https://aur.archlinux.org/packages/quaternion/