Using latest UMU-Proton via TOML config

[JayTee42]

When invoking umu-run from the CLI, we can omit the PROTONPATH env to use the latest version of UMU-Proton, right? How to achieve the same thing from a TOML config file passed to umu-run? Omitting proton from the file does not work since it is required. And passing an empty string is also forbidden. We could specify an absolute path to ~/.local/share/Steam/compatibilitytools.d/UMU-Proton-9.0-2 or similar, but that one changes for every new version of UMU-Proton.

[R1kaB3rN]

I'm aware of this, and I have plans to try address this case in the next release if everyone else on the team is fine with it. In the TOML file, it'd probably look like this:

[umu]
game_id = '0'
exe = '/home/foo/WINE/flowers/drive_c/GOG Games/Flowers - Le Volume Sur Printemps/FLOWERS.exe'
prefix = '/home/foo/WINE/flowers'
proton = 'GE-Proton' # Will use the latest GE-Proton

Same for users' environment variables as it makes mores sense to define them under a table. For example:

[umu]
game_id = '0'
exe = '/home/foo/WINE/flowers/drive_c/GOG Games/Flowers - Le Volume Sur Printemps/FLOWERS.exe'
prefix = '/home/foo/WINE/flowers'
proton = 'GE-Proton' # Will use the latest GE-Proton
[env]
mesa_loader_driver_oveerride = 'zink' # Will use the zink driver when running the game
zink_debug = 'nir,spirv,tgsi,validation'