The GNU project has announced the release of coreutils 9.9, a new stable version of the essential collection of basic file, shell, and text manipulation utilities that form the backbone of nearly every Linux and Unix-like system.
Among the most notable fixes, the cp command regains proper performance when handling transparently compressed files, a regression observed with OpenZFS and similar filesystems.
At the same time, the tail utility now correctly outputs the requested number of lines for non-small -n values, while unexpand no longer triggers heap buffer overflows when using the GNU-specific /NUM or +NUM formats with --tabs.
Other fixes address subtle behavioral issues in tools like numfmt, sort, and cksum, ensuring correct operation when working with various data encodings, locales, and compression setups.
Ah then what you want is probably umu launcher
Then you can run whatever you want under proton, though this isnt "officially" supported so you might have an odd glitch or 2. But if it runs on steam proton fine enough, it shouldn't be much different