Switch steam rom manager to using the AppImage.

nix/steam_deck/configuration/hosts/deck/default.nix

@@ -13,6 +13,6 @@
     me.ship2harkinian.enable = true;
     me.shipwright.enable = true;
     me.sm64ex.enable = true;
-    me.steam_rom_manager.enable = false; # Steam rom manager UI does not render. I think it wants to be in an AppImage.
+    me.steam_rom_manager.enable = true; # Steam rom manager UI does not render. I think it wants to be in an AppImage.
   };
 }

nix/steam_deck/configuration/roles/steam_rom_manager/default.nix

@@ -1,10 +1,14 @@
 {
+  stdenv,
   config,
   lib,
   pkgs,
   ...
 }:
 
+let
+  package = (pkgs.callPackage ./package.nix { });
+in
 {
   imports = [ ];
 
@@ -21,9 +25,8 @@
     lib.mkMerge [
       (lib.mkIf config.me.graphical {
         home.packages = with pkgs; [
-          (config.lib.nixGL.wrap steam-rom-manager)
+          package
         ];
-
       })
     ]
   );

nix/steam_deck/configuration/roles/steam_rom_manager/package.nix

@@ -0,0 +1,43 @@
+{
+  stdenv,
+  lib,
+  pkgs,
+  makeDesktopItem,
+}:
+
+let
+  version = "2.5.29";
+in
+stdenv.mkDerivation {
+  name = "steam-rom-manager";
+  src = pkgs.fetchurl {
+    url = "https://github.com/SteamGridDB/steam-rom-manager/releases/download/v${version}/Steam-ROM-Manager-${version}.AppImage";
+    hash = "sha256-6ZJ+MGIgr2osuQuqD6N9NnPiJFNq/HW6ivG8tyXUhvs=";
+  };
+  phases = [
+    "installPhase"
+  ];
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    install --mode=0755 $src $out/bin/steam-rom-manager
+    runHook postInstall
+  '';
+  postInstall = ''
+    mkdir -p $out/share/applications
+    install -m 444 -D "$desktopItem/share/applications/"* -t $out/share/applications/
+  '';
+
+  desktopItem = makeDesktopItem {
+    name = "steam-rom-manager";
+    desktopName = "Steam Rom Manager";
+    comment = "Manage additional entries in the Steam launcher.";
+    categories = [
+      "Application"
+      "Utility"
+    ];
+    icon = "steam-rom-manager";
+    type = "Application";
+    exec = "steam-rom-manager";
+  };
+}