KetobaK: Linux is like 1-2% at most, I also have Linux PC, but don't use it for gaming.

rojimboo: Galaxy for Linux - 1-5% of users -> Not worth it!

Galaxy for Mac - +3% market share -> Yeah boi! Let's do it!

Also Macs are of course great gaming devices. Totally.

skivvy: Have you seen the rubbish they're asking windows users to work with? Seems like they've over egged the pudding to me, there are just too many features. Keeping it simple would be nice, just show my games, wishlist and act as a store. Show achievements if thats your thing, but above all allow easy access to offline installers, not buried in the basement behind a sign saying "Beware of the Leopard".
I think don't I need a GoG Galaxy client aymore. I did, but I wanted functionality, not the tarted up piece of telemetry fluff that windows users seem to get. There are plenty of options if you are a linux user, Galaxy is, I believe, no longer one of them.

Gersen: Also the "coding" part is the tip of the iceberg, even if it took only a single click to convert the Windows version of Galaxy into a Linux you would still need to take into account the testing, the project management, the support, and after all those things are added whenever or not the ROI would justify it.

Sheershaw: Funnily enough, Linux is a lot better than Mac these days for gaming. With a little bit tinkering, almost every single player game and many multiplayer ones can run just fine on Linux--with Steam+Proton, many just "work" without even needing that tinkering. On the other hand, Apple's deprecation of OpenGL and Vulkan, deprecation of 32bit binary support, and the switch to ARM processors means that many games that received a Mac port in the past now just don't work anymore, and that's discouraged a lot of developers from the platform.