I used lowercase as `geany` and `geany-plugins` are more package names than they are program names. geany-plugins shouldn't be capitalized even if we disregard the fact I'm talking about packages, as they're not a proper noun. If I had a list of runtime dependencies for these plugins for CentOS 7 I would, but I don't have one. Please do provide one though. As for your Arch Linux error well I think it might relate to blacklisted libraries that I'm talking to the upstream developer of AppImages about.