Hi! I'm trying to install Steam and play a game called Apico. My config looks like this:

  programs.steam = {
    enable = true;
    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
    dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
    # withPrimus = true;
    # extraCompatPackages = with pkgs; [ bumblebee glxinfo ];
  };
  environment.systemPackages = with pkgs; [
    steam-run-native
  ];

I launched the steam app using the steam command, logged in, and installed the game in the /nix partition. I tried to launch the game from the Steam launcher and was met with:

[user@nixos:~/nixos]$ /bin/sh\0-c\0/home/user/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=1390190 -- /home/user/.local/share/Steam/ubuntu12_32/steam-launch-wrapper -- '/home/user/.local/share/Steam/steamapps/common/APICO/run.sh'\0
chdir "/home/user/.local/share/Steam/steamapps/common/APICO"
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
./APICO: error while loading shared libraries: libunistring.so.2: cannot open shared object file: No such file or directory
Uploaded AppInterfaceStats to Steam

I tried adding dependancies as defined in the wiki page, but it doesn't look like my system has those options:
error: The option 'programs.steam.extraCompatPackages' does not exist.\

Any ideas on what to do? I tried the steam-run-native package, but it was unable to launch my game for some reason:

[user@nixos:~/nixos]$ steam-run /home/user/.local/share/Steam/steamapps/common/APICO/run.sh 
chmod: cannot access 'APICO': No such file or directory
/home/user/.local/share/Steam/steamapps/common/APICO/run.sh: line 3: ./APICO: No such file or directory

Thanks for the help in advance :)

In reply to @maxeaubrey:matrix.org
Doesn't work in games with 64-bit builds either (e.g. Celeste, Poly Bridge), and there's nothing obvious as to why (I mean, it technically "works" in that it occasionally shows heavily corrupted blocks over where UI elements would be, but that's the extent of it for native stuff)

I see, I did enable that and now I have a new error:

[user@nixos:~/nixos]$ /bin/sh\0-c\0/home/user/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=1390190 -- /home/user/.local/share/Steam/ubuntu12_32/steam-launch-wrapper -- '/home/user/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier'/_v2-entry-point --verb=waitforexitandrun -- '/home/user/.local/share/Steam/steamapps/common/SteamLinuxRuntime'/scout-on-soldier-entry-point-v2 --  '/home/user/.local/share/Steam/steamapps/common/APICO/run.sh'\0
chdir "/home/user/.local/share/Steam/steamapps/common/APICO"
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/user/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
pressure-vessel-wrap[59774]: W: "/run/current-system/sw/bin/getent" is unlikely to appear in "/run/host"
pressure-vessel-wrap[59774]: W: Found more than one possible libdrm data directory from provider
/nix/store/6jccsbgsxjvyydl25x2hx6hrfmyqd0wf-dconf-0.40.0-lib/lib/gio/modules/libdconfsettings.so: undefined symbol: g_assertion_message_cmpint
Failed to load module: /nix/store/6jccsbgsxjvyydl25x2hx6hrfmyqd0wf-dconf-0.40.0-lib/lib/gio/modules/libdconfsettings.so
/nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiognomeproxy.so: undefined symbol: g_task_get_source_tag
Failed to load module: /nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiognomeproxy.so
/nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiognutls.so: undefined symbol: g_source_set_static_name
Failed to load module: /nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiognutls.so
/nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiolibproxy.so: undefined symbol: g_task_get_source_tag
Failed to load module: /nix/store/75sqkz9mdqfzv1q9dcrkvzk73p630nxr-glib-networking-2.78.0/lib/gio/modules/libgiolibproxy.so
/nix/store/p2lfk2avsrbjvz080sw9nz4ancl7sx0f-gvfs-1.52.2/lib/gvfs/libgvfscommon.so: undefined symbol: g_task_set_source_tag
Failed to load module: /nix/store/p2lfk2avsrbjvz080sw9nz4ancl7sx0f-gvfs-1.52.2/lib/gio/modules/libgvfsdbus.so
/nix/store/p2lfk2avsrbjvz080sw9nz4ancl7sx0f-gvfs-1.52.2/lib/gvfs/libgvfscommon.so: undefined symbol: g_task_set_source_tag
Failed to load module: /nix/store/p2lfk2avsrbjvz080sw9nz4ancl7sx0f-gvfs-1.52.2/lib/gio/modules/libgioremote-volume-monitor.so
bwrap: Can't bind mount /oldroot/etc/group on /newroot/etc/group: Unable to mount source on destination: No such file or directory
Uploaded AppInterfaceStats to Steam