First of all, openttd has openttd-opensfx as a optional dependency which doesn't exist in the repositories. Also, Openttd-opensfx has FIXME: description in the blacklist. I don't see why it is blacklisted - it's under https://creativecommons.org/licenses/sampling+/1.0/ this license and it's not a freedom denying license as far as I can understand. I can't find any discussion or arguments to why this was not included in the main repos of Parabola. This is a request to include it and remove it from the blacklist and fix openttd opt dependencies.