Can't restart Windows from within Steam

[appsforartists]

Background

There's a trick that other SteamOS distributions use to support occasionally booting into Windows without adding a boot menu like rEFInd or Clover - adding this incantation as a Non-Steam Game:

efibootmgr -n $(efibootmgr | grep -Pom 1 "(?<=Boot)[[:xdigit:]]{4}(?=. Windows)"); systemctl restart;

I've tried to do so on Jovian (replacing efibootmgr with systemctl to circumvent the sudo requirement). It works from steam-run, but not from within Steam itself.

Steps to reproduce

1. Add this derivation to your Nix build:

    let
      name = "restart-into-windows";
    in {
      config = {
        environment.systemPackages = with pkgs; [
          (stdenv.mkDerivation {
            name = name;
            unpackPhase = ''
              # source is inline, so skip downloading
            '';
            desktopItems = [
              (makeDesktopItem {
                name = name;
                desktopName = "Windows XP";
                exec = ''
                  ${pkgs.systemd}/bin/systemctl reboot --boot-loader-entry=auto-windows
                '';
              })
            ];
            nativeBuildInputs = [copyDesktopItems];
          })
        ];
   
        security.polkit.extraConfig = ''
          polkit.addRule(function(action, subject) {
            if (action.id == "org.freedesktop.login1.set-reboot-to-boot-loader-entry") {
              return polkit.Result.YES;
            }
          });
        '';
      };
    }

2. Switch to Desktop Mode
3. Add /run/current-system/sw/share/applications/restart-into-windows.desktop
4. From either Desktop Mode or gamescope, select the Windows entry and click Play.

Results

Steam says "Launching…", briefly draws the Steam throbber, and then exits back to the game info page.

Logs

From journalctl -f:

Nov 26 00:42:27 brenton-go steam[13086]: chdir "/nix/store/f15mlcw0y5m14lb39qbh6n4bzjfr9sjc-restart-into-windows/share/applications/"
Nov 26 00:42:27 brenton-go steam[13086]: Game Recording - would start recording game 12606475036727967744, but recording for this game is disabled
Nov 26 00:42:27 brenton-go steam[13086]: Adding process 14296 for gameID 12606475036727967744
Nov 26 00:42:27 brenton-go steam[13086]: ERROR: ld.so: object '/home/brenton/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Nov 26 00:42:28 brenton-go steam[13086]: ERROR: ld.so: object '/home/brenton/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Nov 26 00:42:28 brenton-go steam[13086]: ERROR: ld.so: object '/home/brenton/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
Nov 26 00:42:28 brenton-go steam[13086]: pid 14297 != 14296, skipping destruction (fork without exec?)
Nov 26 00:42:28 brenton-go steam[13086]: Game Recording - game stopped [gameid=12606475036727967744]
Nov 26 00:42:28 brenton-go steam[13086]: Removing process 14296 for gameID 12606475036727967744

Let me know if there's a better way to debug this.

[appsforartists]

I'd be happy to upstream this to Jovian if there's a way to make it work.