MarsSeed [1] filed a deletion request for cura-5-modern-beta-bin [2]: Upstream has discontinued the modern / regular release distinction, with the stable release v5.5.0 (Oct 25, 2023). [a]
[a]: https://github.com/Ultimaker/Cura/releases/tag/5.5.0 [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/cura-5-modern-beta-bin/
