There are a few Windows only engines like RPG Maker or some indie titles, that may work on WINE but sometimes have issues. Most advice using Proton to work around various bugs in WINE. I want to try that but without going through other software like Steam or Lutris.
The problem is that I can’t find a package for the binary: I only see packages for using it such as protontricks or protonutils but no proton package. Is it only available in third-party databases like AUR, or is it not possible to install it as a library that lets you run executables with proton mygame.exe the same way you use wine mygame.exe?
Of course not; there’s neither any such thing as “the standalone version” of Proton nor a “binary”.
XY Problem detected: You’re asking about your attempted solution rather than your actual problem. This leads to enormous amounts of wasted time and energy, both on the part of people asking for help, and on the part of those providing help.
We have no idea what you’re doing–because you have no idea what you’re doing. It seems more research on your part is required. Please help us help you by telling us what you found and what you tried.
I understand, thanks. Someone mentioned that Proton is a fork of WINE used by Steam and other platforms: I thus expected there would be a binary for it to launch software just like WINE. It must be meant to be used as a library instead.
The question then would be how do you run an exe using Proton instead of WINE? I presume you must need another launcher such as Lutris.
Proton is intended to be used in Steam.
There are modified version of WINE with most Proton patches and more like GloriousEggroll’s WINE on GitHub. You can install them in Lutris for example to use with your Windows programs.