Pots LSI (Linux Steam Integration) is a Solus project. It force Steam to use system library instead of Steam runtime. Our Steam package used to be bundled with LSI. So, when you launch Steam in Solus, in truth you were lanuching LSI Steam.
LSI has not seen any maintainance for a few years now and Steam runtime has gotten better. Proton (and any Wine derivatives) target Steam runtime now, so forcing Steam to use to system library can cause more problem than its benefit.
We have been disabling the use of system library by LSI since 2023, but it is still installed by default and you cannot uninstall LSI without also uninstalling Steam.
Now (after this week update), Steam and LSI are unbundled. You can safely remove linux-steam-integration without removing steam. You can still use LSI by launching "LSI Steam" (lsi-steam) if you choose to do so.
Cheers!
