FabioLolix [1] filed a deletion request for torrential [2]: Can't be builded or rebuilded against transmission 4.0.0 (2023/02) (tracked at https://github.com/davidmhewitt/torrential/issues/193), I wasn't able to get it compiling with a libtransmission3 packages even with the nixpkgs patches (the only other torrential package as tracked by repology.org)
[1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/torrential/
