Don't fail on not being able to show image

module.nix

@@ -83,28 +83,52 @@ in
 
   config = lib.mkMerge [
     (lib.mkIf cfg.enable {
-      users = {
-        users.greg = {
-          isNormalUser = true;
-          group = "greg";
-          uid = 2000;
-          description = "loud gym bro";
-        };
-        groups.greg.gid = 2000;
-      };
-
       systemd.user.services.greg-ng = {
         description = "greg-ng, an mpv based media player";
         wantedBy = [ "graphical-session.target" ];
         partOf = [ "graphical-session.target" ];
-        environment = {
+        environment.RUST_LOG = lib.mkIf cfg.enableDebug "greg_ng=trace,mpvipc=trace";
-          RUST_LOG = lib.mkIf cfg.enableDebug "greg_ng=trace,mpvipc=trace";
-        };
         serviceConfig = {
           Type = "simple";
           ExecStart = "${lib.getExe cfg.package} ${lib.cli.toGNUCommandLineShell { } cfg.settings}";
           Restart = "always";
           RestartSec = 3;
+
+          RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" ];
+          AmbientCapabilities = [ "" ];
+          CapabilityBoundingSet = [ "" ];
+          DeviceAllow = [ "" ];
+          LockPersonality = true;
+          # Might work, but wouldn't bet on it with embedded lua in mpv
+          MemoryDenyWriteExecute = false;
+          NoNewPrivileges = true;
+          # MPV and mesa tries to talk directly to the GPU.
+          PrivateDevices = false;
+          PrivateMounts = true;
+          PrivateTmp = true;
+          PrivateUsers = true;
+          ProcSubset = "pid";
+          ProtectClock = true;
+          ProtectControlGroups = true;
+          # MPV wants ~/.cache
+          ProtectHome = false;
+          ProtectHostname = true;
+          ProtectKernelLogs = true;
+          ProtectKernelModules = true;
+          ProtectKernelTunables = true;
+          ProtectProc = "invisible";
+          ProtectSystem = "full";
+          RemoveIPC = true;
+          UMask = "0077";
+          RestrictNamespaces = true;
+          RestrictRealtime = true;
+          RestrictSUIDSGID = true;
+          SystemCallArchitectures = "native";
+          SystemCallFilter = [
+            "@system-service"
+            "~@privileged"
+            "~@resources"
+          ];
         };
       };
     })
@@ -128,6 +152,16 @@ in
         extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
       };
 
+      users = {
+        users.greg = {
+          isNormalUser = true;
+          group = "greg";
+          uid = 2000;
+          description = "loud gym bro";
+        };
+        groups.greg.gid = 2000;
+      };
+
       services.greetd = {
         enable = true;
         settings = rec {

src/main.rs

@@ -66,7 +66,9 @@ async fn main() -> anyhow::Result<()> {
     })
     .await?;
 
-    show_grzegorz_image(mpv.clone()).await?;
+    if let Err(e) = show_grzegorz_image(mpv.clone()).await {
+      log::warn!("Could not show Grzegorz image: {}", e);
+    }
 
     let addr = SocketAddr::new(resolve(&args.host).await?, args.port);
     log::info!("Starting API on {}", addr);