A package upgrade today said to replace esd with extra/esound. After downloading all of the packages, it removed esd as expected. After removing the old package, it checked for file conflits, and found a conflict in catalyst-utils, which caused no packages to be upgraded. Since the new esound package was not installed, it doesn't seem right that the old esd package (which was intended to be replaced) should remain removed -- my system is now missing a package. Thankfully it printed a warning about one of the config files moving, otherwise it likely would've slipped under the radar.

Attached is pacman output from the failed upgrade.