Overriding steam-runtime

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1

Crusader Kings 3 started failing for me with the following error when I click on resume/play in the launcher.

./ck3: error while loading shared libraries: libtinfo.so.6: cannot open shared object file: No such file or directory

I noticed that there is a newer version of the steam-runtime than what is currently in nixos-unstable so I tried to override it to see if that improved anything using the following overlay:

    (self: super: {
      steamPackages =
        super.steamPackages.overrideScope(steamSelf: steamSuper: rec {
          steam-runtime =
            steamSuper.steam-runtime.overrideAttrs(oldAttrs: rec {
              version = "0.20221019.0";
              src = super.fetchurl {
                url = "https://repo.steampowered.com/steamrt-images-scout/snapshots/${version}/steam-runtime.tar.xz";
                sha256 = "0000000000000000000000000000000000000000000000000000000000000000";
                name = "scout-runtime-${version}.tar.gz";
              };
            });
        });
    })

Note the obviously broken sha256 so I would expect the build to fail and tell me the correct sha256. But instead the build succeeds without any issues so this does not appear to actually override the steam-runtime.

I’m not super familiar with overrideScope so definitely possible that I’m using it wrong somehow. Any ideas?

2

The version of steam packaged with nixpkgs no longer overrides the steam runtime at all. The steam runtime is downloaded and managed by steam itself.

3

I think I’m confused. If the runtime is managed by steam itself what is nixpkgs/runtime.nix at 456bfbb59d98e23d0c4de0b0a8acb39c2ea4d4b4 · NixOS/nixpkgs · GitHub being used for? Afaict pkgs.steam is pkgs.steamPackages.steam-fhsenv which does reference that package.

4

I’m getting that from discussion on steam: many fixes by jonringer · Pull Request #157907 · NixOS/nixpkgs · GitHub and Unable to load libpangoft2-1.0.so on NixOS · Issue #2018 · ValveSoftware/Dota-2 · GitHub. Hopefully that’s helpful.