swedishhat [1] filed a request to merge marp [2] into marp-cli-bin [3]:

The Marp project has been broken up into several smaller projects with new functionality. This current package has been superseded by the "Marp Next" tools, namely marp-cli and marp-web (which doesn't have an AUR package yet)

[1] https://aur.archlinux.org/account/swedishhat/ [2] https://aur.archlinux.org/pkgbase/marp/ [3] https://aur.archlinux.org/pkgbase/marp-cli-bin/