Request #27033 has been rejected by alerque [1]: This is incorrect, there are in fact two different sets of packages being built upstream: beta and dev. The homepage for the latter has been rebranded as "nightly" not "dev", but it used to be dev and the download files are still labeled that. The homepage could be updated to reflect this but the package is otherwise valid.
[1] https://aur.archlinux.org/account/alerque/
