Hosted on AUR: just
install and add BAKKES=1 as a launch option for the official DLL or
BAKKES=1 PROMPTLESS=1 for the patched version without the version detection
prompt. If you're unfamiliar with launch options, remember to add %command% at
the end.
The AUR package replaces the official updater with the system package manager, so use bakkesmod-steam-git instead if the main repo ends up out of date (relative to the latest BakkesModInjectorCpp release).
The dll_patch.py script, followed by the BakkesMod DLL path as a CLI argument,
will create a patched DLL version which will not prompt the user to verify
injection despite being unable to detect the version. This injector version can
be used via Proton by adding PROMPTLESS=1 as a launch option. The patched
version should also get rid of the injection verification on Windows, provided
that the BakkesMod DLL is replaced rather than duplicated, which is the default.
After updating Rocket league, the game might have to run without the injector at least once.