[live-usb] Add a build script

build-liveusb.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# Build Live USB ISO from flake configuration
+# Creates an uncompressed ISO suitable for Ventoy and other USB boot tools
+
+set -e
+
+echo "Building Live USB ISO..."
+nix build .#nixosConfigurations.live-usb.config.system.build.isoImage --show-trace
+
+if [ -f "./result/iso/"*.iso ]; then
+    iso_file=$(ls ./result/iso/*.iso)
+    echo "✅ Build complete!"
+    echo "📁 ISO location: $iso_file"
+    echo "💾 Ready for Ventoy or dd to USB"
+else
+    echo "❌ Build failed - no ISO file found"
+    exit 1
+fi

flake.nix

@@ -74,6 +74,18 @@
       ];
     };
 
+    # Live USB ISO configuration
+    nixosConfigurations.live-usb = nixpkgs.lib.nixosSystem rec {
+      system = "x86_64-linux";
+      modules = baseModules ++ [
+        ./machines/live-usb/configuration.nix
+        {
+          home-manager.users.johno = import ./home/home.nix;
+          home-manager.extraSpecialArgs = { inherit system; };
+        }
+      ];
+    };
+
     homeConfigurations."johno" = inputs.home-manager.lib.homeManagerConfiguration {
       pkgs = inputs.nixpkgs.legacyPackages."x86_64-linux";
       modules = [

machines/live-usb/configuration.nix

@@ -0,0 +1,95 @@
+# Live USB ISO configuration for recovery and installation
+{ pkgs, modulesPath, ... }:
+
+{
+  imports = [
+    # Use minimal installation CD as base
+    (modulesPath + "/installer/cd-dvd/installation-cd-minimal.nix")
+  ];
+
+  # Use roles structure for consistent configuration
+  roles = {
+    audio.enable = true;
+    bluetooth.enable = true;
+    users = {
+      enable = true;
+      extraGroups = [ "video" "wheel" "networkmanager" ];
+    };
+  };
+
+  # Allow unfree packages for broader hardware support
+  nixpkgs.config.allowUnfree = true;
+
+  # Essential packages for system recovery and installation
+  environment.systemPackages = with pkgs; [
+    # Text editors
+    neovim
+    nano
+    
+    # System tools
+    git
+    curl
+    wget
+    htop
+    tree
+    lsof
+    strace
+    
+    # Filesystem tools
+    btrfs-progs
+    e2fsprogs
+    xfsprogs
+    ntfs3g
+    dosfstools
+    
+    # Network tools
+    networkmanager
+    wirelesstools
+    
+    # Hardware tools
+    pciutils
+    usbutils
+    smartmontools
+    
+    # Archive tools
+    unzip
+    p7zip
+    
+    # Development tools (for quick fixes)
+    gcc
+    binutils
+  ];
+
+  # Enable NetworkManager for easy wifi setup
+  networking.networkmanager.enable = true;
+  
+  # Enable SSH daemon for remote access
+  services.openssh = {
+    enable = true;
+    settings = {
+      PermitRootLogin = "yes";
+      PasswordAuthentication = true;
+    };
+  };
+
+  # Override default nixos user, set johno as the main user with password
+  users.users.nixos.enable = false;
+  users.users.johno = {
+    isNormalUser = true;
+    description = "John Ogle";  
+    extraGroups = [ "wheel" "networkmanager" "audio" "video" ];
+    password = "nixos";  # Simple password for live environment
+  };
+
+  # ISO customization
+  isoImage = {
+    volumeID = "NIXOS-LIVE";
+  };
+
+  # Enable some useful services
+  services.udisks2.enable = true; # For mounting USB drives
+
+  # Hardware support
+  hardware.enableAllFirmware = true;
+  hardware.enableRedistributableFirmware = true;
+}

roles/desktop/default.nix

@@ -20,6 +20,5 @@ with lib;
     ./kde.nix
     ./programs.nix
     ./sddm.nix
-    ./steam-sleep-inhibitor.nix
   ];
 }

roles/desktop/steam-sleep-inhibitor.nix

@@ -1,116 +0,0 @@
-{ lib, config, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.roles.desktop;
-  
-  steamSleepInhibitor = pkgs.writeShellScript "steam-sleep-inhibitor" ''
-    #!/usr/bin/env bash
-    
-    # Steam log path - adjust if different
-    STEAM_LOG="$HOME/.local/share/Steam/logs/streaming_log.txt"
-    FALLBACK_LOG="$HOME/.steam/steam/logs/streaming_log.txt"
-    
-    # Find Steam log file
-    if [[ -f "$STEAM_LOG" ]]; then
-      LOG_FILE="$STEAM_LOG"
-    elif [[ -f "$FALLBACK_LOG" ]]; then
-      LOG_FILE="$FALLBACK_LOG"
-    else
-      # Monitor Steam process for streaming activity
-      LOG_FILE=""
-    fi
-    
-    INHIBITOR_PID=""
-    MONITORING=false
-    
-    cleanup() {
-      if [[ -n "$INHIBITOR_PID" ]]; then
-        echo "Stopping sleep inhibitor (PID: $INHIBITOR_PID)"
-        kill "$INHIBITOR_PID" 2>/dev/null
-      fi
-      exit 0
-    }
-    
-    start_inhibitor() {
-      if [[ -z "$INHIBITOR_PID" ]]; then
-        echo "Starting sleep inhibitor for Steam Remote Play session"
-        ${pkgs.systemd}/bin/systemd-inhibit \
-          --what=sleep \
-          --who="Steam Remote Play" \
-          --why="Active streaming session detected" \
-          --mode=block \
-          sleep infinity &
-        INHIBITOR_PID=$!
-      fi
-    }
-    
-    stop_inhibitor() {
-      if [[ -n "$INHIBITOR_PID" ]]; then
-        echo "Stopping sleep inhibitor - streaming session ended"
-        kill "$INHIBITOR_PID" 2>/dev/null
-        INHIBITOR_PID=""
-      fi
-    }
-    
-    # Check if Steam Remote Play is active by looking for streaming processes
-    check_streaming_active() {
-      # Check for Steam streaming processes
-      if pgrep -f "streaming_client" >/dev/null || \
-         pgrep -f "steamremoteplay" >/dev/null || \
-         ${pkgs.procps}/bin/pgrep -f "Remote Play" >/dev/null; then
-        return 0
-      fi
-      
-      # Check for active network connections on Steam streaming ports
-      if ${pkgs.nettools}/bin/netstat -an 2>/dev/null | grep -E ":(27036|27037)" | grep ESTABLISHED >/dev/null; then
-        return 0
-      fi
-      
-      return 1
-    }
-    
-    trap cleanup EXIT INT TERM
-    
-    echo "Steam sleep inhibitor monitoring started"
-    
-    while true; do
-      if check_streaming_active; then
-        if [[ "$MONITORING" == "false" ]]; then
-          MONITORING=true
-          start_inhibitor
-        fi
-      else
-        if [[ "$MONITORING" == "true" ]]; then
-          MONITORING=false
-          stop_inhibitor
-        fi
-      fi
-      
-      sleep 10
-    done
-  '';
-in
-{
-  config = mkIf (cfg.enable && cfg.kde && cfg.gaming) {
-    # Steam streaming sleep inhibitor service
-    systemd.user.services.steam-sleep-inhibitor = {
-      description = "Steam Remote Play Sleep Inhibitor";
-      wantedBy = [ "default.target" ];
-      after = [ "graphical-session.target" ];
-      
-      serviceConfig = {
-        Type = "simple";
-        ExecStart = "${steamSleepInhibitor}";
-        Restart = "always";
-        RestartSec = "5";
-      };
-    };
-
-    # Steam-specific environment variables to prevent sleep interference
-    environment.sessionVariables = {
-      SDL_VIDEO_ALLOW_SCREENSAVER = "1";
-    };
-  };
-}

roles/printing/default.nix

@@ -19,5 +19,12 @@ in
         nssmdns4 = true;
         openFirewall = true;
       };
+
+      hardware.printers.ensurePrinters = [{
+        name = "MFC-L8900CDW_series";
+        deviceUri = "dnssd://Brother%20MFC-L8900CDW%20series._ipp._tcp.local/?uuid=e3248000-80ce-11db-8000-b422006699d8";
+        model = "everywhere";
+      }];
+      hardware.printers.ensureDefaultPrinter = "MFC-L8900CDW_series";
     };
 }