add deck base config

flake.nix

@@ -14,9 +14,11 @@
     };
     disko.url = "github:nix-community/disko";
     disko.inputs.nixpkgs.follows = "nixpkgs";
+    jovian-nixos.url = "github:Jovian-Experiments/Jovian-NixOS";
+    jovian-nixos.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = inputs@{ self, nixpkgs, home-manager, nixvim, claude-code, firefox-addons, disko }:
+  outputs = inputs@{ self, nixpkgs, home-manager, nixvim, claude-code, firefox-addons, disko, jovian-nixos }:
   {
     nixosConfigurations."hs" = nixpkgs.lib.nixosSystem {
       system = "x86_64-linux";
@@ -45,6 +47,16 @@
       ];
     };
 
+    nixosConfigurations."deck" = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        disko.nixosModules.disko
+        jovian-nixos.nixosModules.jovian
+        ./hosts/nixos/deck/system.nix
+        ./hosts/nixos/deck/disk-config.nix
+      ];
+    };
+
     homeConfigurations = {
       "yanlin@hs" = home-manager.lib.homeManagerConfiguration {
         pkgs = nixpkgs.legacyPackages.x86_64-linux;
@@ -63,6 +75,12 @@
         modules = [ ./hosts/nixos/thinkpad/home.nix ];
         extraSpecialArgs = { inherit claude-code nixvim firefox-addons; };
       };
+
+      "yanlin@deck" = home-manager.lib.homeManagerConfiguration {
+        pkgs = nixpkgs.legacyPackages.x86_64-linux;
+        modules = [ ./hosts/nixos/deck/home.nix ];
+        extraSpecialArgs = { inherit claude-code nixvim firefox-addons; };
+      };
     };
   };
 }

hosts/nixos/deck/disk-config.nix

@@ -0,0 +1,47 @@
+# Disko configuration for Steam Deck
+# Following the partitioning scheme from https://heywoodlh.io/nixos-steamdeck
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            # EFI System Partition
+            ESP = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "fmask=0077" "dmask=0077" ];
+              };
+            };
+
+            # Swap partition
+            swap = {
+              size = "8G";
+              content = {
+                type = "swap";
+                resumeDevice = true;
+              };
+            };
+
+            # Root partition - takes remaining space
+            root = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

hosts/nixos/deck/hardware-configuration.nix

@@ -0,0 +1,43 @@
+# Placeholder hardware configuration for Steam Deck
+#
+# This file must be generated on the actual Steam Deck hardware.
+#
+# To generate this file:
+# 1. Boot into the Jovian-NixOS installer ISO on the Steam Deck
+# 2. Run: nixos-generate-config --root /mnt --show-hardware-config > hardware-configuration.nix
+# 3. Copy the generated file to this location
+#
+# The generated file will include:
+# - CPU and GPU detection
+# - Storage device configuration
+# - Kernel modules for Steam Deck hardware
+# - File system configuration
+#
+# DO NOT attempt to use this placeholder for installation.
+
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports = [ ];
+
+  # Placeholder - will be replaced by actual hardware detection
+  boot.initrd.availableKernelModules = [ ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  # Placeholder filesystem configuration
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/nixos";
+    fsType = "ext4";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-label/boot";
+    fsType = "vfat";
+  };
+
+  swapDevices = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/nixos/deck/home.nix

@@ -0,0 +1,12 @@
+{ config, pkgs, ... }:
+
+{
+  # Allow unfree packages in home-manager
+  nixpkgs.config.allowUnfree = true;
+
+  # Import the common NixOS home configuration
+  imports = [
+    ../home-default.nix
+    ../../../modules/gnome.nix
+  ];
+}

hosts/nixos/deck/system.nix

@@ -0,0 +1,133 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ../system-default.nix  # Common NixOS system configuration
+  ];
+
+  # Bootloader - standard UEFI setup
+  boot.loader = {
+    systemd-boot.enable = true;
+    systemd-boot.configurationLimit = 10;
+    efi.canTouchEfiVariables = true;
+    timeout = 3;
+  };
+
+  # Use latest kernel for better hardware support
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+  # Network configuration
+  networking = {
+    hostName = "deck";
+    networkmanager = {
+      enable = true;
+      wifi.powersave = true;
+    };
+    firewall.enable = false;
+  };
+
+  # Hardware support for Steam Deck (AMD APU)
+  hardware = {
+    enableRedistributableFirmware = true;
+
+    # Graphics configuration for AMD
+    graphics = {
+      enable = true;
+      enable32Bit = true;
+    };
+
+    # Bluetooth support
+    bluetooth = {
+      enable = true;
+      powerOnBoot = true;
+      settings = {
+        General = {
+          Enable = "Source,Sink,Media,Socket";
+        };
+      };
+    };
+  };
+
+  # Sound configuration with PipeWire
+  services.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  # Jovian Steam Deck configuration
+  jovian = {
+    steam = {
+      enable = true;
+      autoStart = true;
+      desktopSession = "gnome";
+    };
+    decky-loader.enable = true;
+    devices.steamdeck = {
+      enable = true;
+      autoUpdate = true;
+    };
+  };
+
+  # GNOME Desktop Environment
+  services.xserver.enable = true;
+  services.displayManager.gdm.enable = true;
+  services.desktopManager.gnome.enable = true;
+
+  # Keyboard layout
+  services.xserver.xkb = {
+    layout = "us";
+    options = "";
+  };
+
+  # XDG portal for proper desktop integration
+  xdg.portal = {
+    enable = true;
+    extraPortals = with pkgs; [
+      xdg-desktop-portal-gnome
+      xdg-desktop-portal-gtk
+    ];
+  };
+
+  # Touchscreen configuration
+  services.libinput = {
+    enable = true;
+    touchpad = {
+      naturalScrolling = true;
+      tapping = true;
+    };
+  };
+
+  # Host-specific SSH configuration
+  services.openssh = {
+    settings = {
+      PermitRootLogin = "no";
+    };
+  };
+
+  # Host-specific user configuration
+  users.users.yanlin = {
+    extraGroups = [ "networkmanager" "wheel" "video" "audio" "input" ];
+    hashedPassword = "$6$kSyaRzAtj8VPcNeX$NsEP6zQAfp6O8YWcolfPRKnhIcJlKu5luZgWqozJAHtbE/gv90KoOOKU7Dt.FnbPB0Ej26jXoBH4X.7y/OLGB1";
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOzmzq6xXp7KkUfPsFo/4O7AYVCJ1U+GrbD0fB10izMF yanlin@thinkpad"
+    ];
+  };
+
+  # Host-specific packages
+  environment.systemPackages = with pkgs; [
+    # System utilities
+    pciutils
+    usbutils
+    unzip
+
+    # Icon themes for GNOME applications
+    adwaita-icon-theme
+    hicolor-icon-theme
+  ];
+
+}