I have an idea to install all modules for those three languages on my Arch box because I never know which module I'll have to use and I don't update my Arch for long times. Can this action make any harm? Or it's not that much to install that it can cause any problems?
I wonder which Arch Linux user has the most number of packages installed... I guess, in theory, it's possible to install every package (except duplicate "provides"). I wonder how much of a pain it would be to perform daily updates on all of them.
If you don't update Arch for a long time and you connect your Arch box to the internet e.g. you use a web browser, that can cause harm.