Valid point! For me, the FSR3 -> FSR4 was such a big boon of performance and graphics quality it made GE Proton (with the PROTON_FSR4_UPGRADE=1 flag) the easy choice for most games that supported FSR3. Luckily, it seems Valve has just added this to their Proton, too!
For those curious, Proton is included with Steam, but GE's Proton includes many tweaks, improvements, and yes, rebasing on the latest upstream versions of many packages. For many games running in Linux GE Proton tends to be better than Valve's default Proton. GE Proton also includes features earlier than Valve, like FSR3 -> FSR4 upgrading, etc.
CachyOS makes also makes a Proton that's similar but different from GE's. There's also Valve's Proton betas, Proton Experimental (which is often updated within days of major releases).
ProtonDB.com is a great resource for finding out which "Proton" works best for a given game.
I appreciate someone from the project commenting here. I left Nix because it just has too many warts, and unfortunately, they've only increased over time, which is the opposite of what I expected.
- I'd update Nixpkgs, and my build would stop working. The logging was awful, so fixing it took hours.
- The mono repo sounds nice, but selective updates are almost impossible.
- Building our Go project in a Nix package was nearly impossible with private GitHub repos, so we moved on.
- Bash scripts never work because binaries are never where they should be in Linux.
I could go on, but my experience with Nix and NixOS left me with significant scars. I’m hopeful that someone will eventually create a more user-friendly deterministic OS.
To me, these RTOs are nothing but silent layoffs. Their best and probably most expensive talent, who have the skills to land remote gigs, will depart. Amazon's smart enough to know this; I understand from friends who worked there they believe everyone is replaceable. I disagree.