I made a post about this a while ago. It's been years. If Riot wanted a Linux client, they'd take some money and people and get that shit done. It might be the fact that AIR doesn't work on Linux anymore I think. Not sure, someone google that.
Now, I don't mind spending money on this game. Support the talented people at Riot? Mk. But every other computer I own is running Ubuntu or something of the like. And I HATE windows8/8.1/10. I mean, Windows 10 is usable... but damn, it is still crap. Really glad they gave it away for free because you're damn right I'm not spending money on it. Ubuntu, now... ohhh, Ubuntu. Ubuntu is amazing. Linux is amazing.
Maybe when Riot updates their client, we'll get a Linux version. But why do that when they could sell me more skins... BECAUSE YOU COULD ALSO BE SELLING SKINS TO PEOPLE ON LINUX.
You might as well suck it up and make the client now so I can install League on my laptops, Riot. I mean... plz?