Enable RetroArch on Steam Deck

linux/protostar/configuration.nix

@@ -6,10 +6,13 @@
 
 {
   # Configuration boot
-  boot.loader = {
-    efi.canTouchEfiVariables = true;
-    systemd-boot.enable = true;
-    timeout = 0;
+  boot = {
+    initrd.systemd.enable = true;
+    loader = {
+      efi.canTouchEfiVariables = true;
+      systemd-boot.enable = true;
+      timeout = 0;
+    };
   };
 
   # Change secrets file

linux/protostar/default.nix

@@ -4,15 +4,15 @@
   imports = with inputs; [
     disko.nixosModules.default
     jovian.nixosModules.default
-  ] ++ [
+    ../../common
     ./configuration.nix
     ./disko.nix
     ./gui.nix
     ./hardware-configuration.nix
+    ./locale.nix
     ./network.nix
     ./syncthing.nix
     ./tailscale.nix
     ./zfs.nix
-    ../../common
   ];
 }

linux/protostar/gui.nix

@@ -1,18 +1,30 @@
-{ config, ... }:
+{ config, inputs, pkgs, ... }:
 
-let usr = config.constants.userName; in {
+let
+  usr = config.constants.userName;
+  jovianPkgs = pkgs.extend inputs.jovian.overlays.default;
+in
+{
+  home-manager.users.${usr}.home.packages = with jovianPkgs; [
+    (retroarch.override {
+      cores = with libretro; [
+        pcsx2
+        ppsspp
+      ];
+    })
+    yuzu
+  ];
   jovian = {
+    decky-loader = {
+      enable = true;
+      user = usr;
+    };
     devices.steamdeck.enable = true;
     steam = {
       enable = true;
       autoStart = true;
-      desktopSession = "plasma";
+      desktopSession = "gamescope-wayland";
       user = usr;
     };
   };
-
-  services.xserver = {
-    enable = true;
-    desktopManager.plasma6.enable = true;
-  };
 }

linux/protostar/locale.nix

@@ -0,0 +1,16 @@
+{ pkgs, ... }:
+
+{
+  # Configure default fonts
+  fonts = {
+    fontconfig.defaultFonts = {
+      serif = [ "Noto Serif" "Noto Serif CJK SC" ];
+      sansSerif = [ "Inter" "Noto Sans CJK SC" ];
+      monospace = [ "Iosevka" "Noto Sans Mono CJK SC" ];
+    };
+    packages = with pkgs; [
+      sarasa-gothic
+      noto-fonts-emoji
+    ];
+  };
+}

linux/protostar/network.nix

@@ -1,10 +1,15 @@
-{ ... }:
+{ config, ... }:
 
 {
   networking = {
+    firewall.trustedInterfaces = [ config.services.tailscale.interfaceName ];
     hostId = "74247225";
-    networkmanager.enable = true;
+    networkmanager = {
+      enable = true;
+      wifi.backend = "iwd";
+    };
     nftables.enable = true;
+    wireless.iwd.enable = true;
   };
   services.openssh.enable = true;
 }

linux/protostar/syncthing.nix

@@ -1,18 +1,9 @@
-{ config, ... }:
+{ ... }:
 
 {
-  services.syncthing = let home = config.constants.homeDir; in {
+  services.syncthing = {
     enable = true;
-    configDir = "${home}/.config/syncthing";
-    dataDir = "${home}/.local/share/syncthing";
-    openDefaultPorts = true;
-    overrideDevices = true;
-    overrideFolders = true;
     # settings = let pc = "blitzar"; in {
-    #   devices.${pc} = {
-    #     name = pc;
-    #     id = "KGCBCIZ-GG6KMQ2-FLK5BWW-GLCEDML-5LCI24S-UKO5UWL-HWNCPYX-ZWWD5AQ";
-    #   };
     #   folders.music = {
     #     enable = true;
     #     devices = [ pc ];
@@ -22,6 +13,5 @@
     #     type = "receiveonly";
     #   };
     # };
-    user = config.constants.userName;
   };
 }