MarsSeed [1] filed a deletion request for tmv [2]: Orphan, deprecated utility. VCS package in disguise, without pkgver() function. Development has ceased since 2017. [a] GitHub project added the following information: "This project is no longer being actively developed. […] An alternative that has now become at least as good as (and sometimes better than) TMV for almost all use cases is Eigen. You would probably be well served to switch to that. Safe to delete this abandoned package. Nothing depends on it, and there are no comments. [a]: https://github.com/rmjarvis/tmv/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/tmv/