Arch users: update pacman soon
The Arch Linux developers recently released version 5.0 of the pacman
package manager with some useful new features: "The release of
pacman-5.0 brought support for transactional hooks. These will allow us to
(e.g.) run font cache updates a single time during an update rather than
after each font package installation. This will both speed up the update
process, but also reduce packaging burden for the Developers and Trusted
Users." Unfortunately, once they start using these hooks, older
versions of pacman will no longer understand the resulting packages. That
will happen on April 23, so all Arch users need to have upgraded by
then.