TrialnError [1] filed a request to merge alglib3 [2] into alglib [3]: Both PKGBuilds were the same (the one from alglib got an overhaul and update). So I propose that alglib3 should be merged into alglib as they provide theoretically the same. And alglib3 is unmaintained and ood.
[1] https://aur.archlinux.org/account/TrialnError/ [2] https://aur.archlinux.org/pkgbase/alglib3/ [3] https://aur.archlinux.org/pkgbase/alglib/
