Add Garand-Desktop flake with core boot module

Introduce a new flake for the Garand-Desktop host, including:
- top‑level flake.nix with inputs and outputs
- host config (default.nix) and modules:
  - hardware
  - home
  - system
  - packages
  - variables
- core boot module defining kernel and Limine loader styling
  with appimage support and plymouth enabled

flake.nix

@@ -0,0 +1,15 @@
+{
+  description = "GarandOS flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    import-tree.url = "github:vic/import-tree";
+  };
+
+  outputs = inputs: inputs.flake-parts.lib.mkFlake {
+    inherit inputs;
+  } (inputs.import-tree ./src);
+}

src/hosts/Garand-Desktop/default.nix

@@ -0,0 +1,17 @@
+{
+  self,
+  inputs,
+  ...
+}: let
+  modules = self.nixosModules;
+in {
+  flake.nixosConfigurations."Garand-Desktop" = inputs.nixpkgs.lib.nixosSystem {
+    modules = [
+      modules.hardware
+      modules.homeModules
+      modules.systemModules
+      modules.systemPackages
+      modules.variables
+    ];
+  };
+}

src/hosts/Garand-Desktop/hardware.nix

@@ -0,0 +1,69 @@
+_: {
+  flake.nixosModules.hardware = {
+    config,
+    lib,
+    modulesPath,
+    ...
+  }: {
+    imports = [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+    boot = {
+      initrd = {
+        availableKernelModules = [
+          "nvme"
+          "xhci_pci"
+          "ahci"
+          "usbhid"
+          "usb_storage"
+          "sd_mod"
+        ];
+        kernelModules = ["dm-snapshot"];
+        luks.devices = {
+          cryptroot = {
+            device = "/dev/disk/by-uuid/7c018698-d35c-4ee6-92a8-5e4edf914065";
+            preLVM = true;
+          };
+        };
+      };
+      kernelModules = ["kvm-amd"];
+      extraModulePackages = [];
+    };
+
+    fileSystems = {
+      "/" = {
+        device = "/dev/disk/by-uuid/e3ac1df3-ce8f-44cd-901f-a8cd3f6955b7";
+        fsType = "ext4";
+      };
+      "/home" = {
+        device = "/dev/disk/by-uuid/0713b82c-bf8c-424f-96e1-5d883e50b451";
+        fsType = "ext4";
+      };
+      "/boot" = {
+        device = "/dev/disk/by-uuid/783D-A507";
+        fsType = "vfat";
+        options = [
+          "fmask=0022"
+          "dmask=0022"
+        ];
+      };
+    };
+
+    swapDevices = lib.mkForce [
+      {
+        device = "/dev/disk/by-uuid/8e8cc3dc-5754-4757-a2d7-53e6a2c3b5a4";
+      }
+    ];
+
+    # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+    # (the default) this is the recommended approach. When using systemd-networkd it's
+    # still possible to use this option, but it's recommended to use it in conjunction
+    # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+    networking.useDHCP = lib.mkDefault true;
+    # networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
+
+    nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+    hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  };
+}

src/hosts/Garand-Desktop/home-modules.nix

@@ -0,0 +1,67 @@
+_: {
+  flake.nixosModules.homeModules = {
+    /*
+    Development editors and IDEs
+    */
+    vscodium.enable = false; # VSCodium: a free and open-source "demicrosofted" VSCode
+    zed-editor = {
+      enable = true; # Zed Editor: a modern, high‑performance code editor
+      remote-server.enable = true; # Remote Server: enable remote editing capabilities
+    };
+
+    /*
+    Web browsers
+    */
+    librewolf.enable = true; # Librewolf: a privacy-focused Firefox fork
+    ungoogled-chromium.enable = true; # Ungoogled Chromium: a privacy-focused Chromium fork
+
+    /*
+    System utilities
+    */
+    btop.enable = true; # Btop: a resource monitor for the terminal
+    cava.enable = false; # Cava: terminal audio visualizer
+    fastfetch.enable = true; # Fastfetch: a fast system information tool
+
+    /*
+    Communication and synchronization
+    */
+    kdeconnect.enable = true; # KDE Connect: integrate your phone and desktop
+    nextcloud-client.enable = true; # Nextcloud Client: sync files with a Nextcloud server
+    vesktop.enable = true; # Vesktop: a community‑driven Discord client
+
+    /*
+    Gaming
+    */
+    lutris.enable = false; # Lutris: an open gaming platform
+
+    /*
+    Media recording and streaming
+    */
+    obs-studio.enable = false; # OBS Studio: streaming and recording software
+
+    /*
+    Office suite
+    */
+    onlyoffice.enable = true; # OnlyOffice: an office suite compatible with Microsoft formats
+
+    /*
+    Learning tools
+    */
+    anki.enable = true; # Anki: spaced‑repetition flashcard program
+
+    /*
+    XDG desktop entries (PWA)
+    */
+    xdgDesktopEntries = {
+      enable = true; # Enable XDG desktop entries
+      entries = {
+        messenger.enable = true; # Messenger: Facebook Messenger
+        mastodon.enable = true; # Mastodon: a decentralized social network
+        garandcloud.enable = true; # GarandCloud: my Nextcloud instance
+        chatgpt.enable = true; # ChatGPT: a large language model
+        claude.enable = true; # Claude: a large language model
+        glance.enable = true; # Glance: my home server dashboard
+      };
+    };
+  };
+}

src/hosts/Garand-Desktop/system-modules.nix

@@ -0,0 +1,97 @@
+_: {
+  flake.nixosModules.systemModules = {
+    /*
+    Container & Packaging
+    */
+    docker.enable = true; # Docker: container runtime and management
+    virtualbox.enable = false; # VirtualBox: PC emulator
+    flatpak = {
+      enable = true; # Flatpak: universal packaging system for Linux
+      packages = {
+        sober.enable = false; # Roblox client
+        warehouse.enable = true; # Flatpak manager
+        flatseal.enable = true; # Flatpak permissions manager
+      };
+    };
+
+    /*
+    Networking
+    */
+    tailscale.enable = true; # Tailscale: secure network for remote access
+
+    /*
+    Calendar & Contacts
+    */
+    calendar.enable = true; # GNOME Calendar: calendar and contacts application
+
+    /*
+    Gaming
+    */
+    gamemode.enable = true; # GameMode: optimizes system performance for gaming
+    gamescope.enable = false; # Gamescope: micro‑compositor for games
+    steam.enable = true; # Steam: platform for buying and playing games
+
+    packages = {
+      /*
+      Container & Packaging
+      */
+      distrobox.enable = false; # Distrobox: containerized development environments
+      lazydocker.enable = false; # Lazydocker: simple TUI for Docker
+      bottles.enable = false; # Bottles: Easy-to-use wineprefix manager
+
+      /*
+      Gaming
+      */
+      prismlauncher.enable = true; # Prism Launcher: Minecraft modded launcher
+      spaceCadetPinball.enable = true; # SpaceCadet Pinball: classic pinball game
+      ttySolitaire.enable = true; # TTY Solitaire: terminal‑based solitaire game
+      heroic.enable = false; # Native GOG, Epic, and Amazon Games Launcher for Linux, Windows and Mac
+
+      /*
+      Development Tools
+      */
+      exercism.enable = true; # Exercism: coding practice platform
+      lazygit.enable = false; # Lazygit: simple TUI for Git
+      opencode.enable = false; # OpenCode: tools for coding and development
+      jan.enable = true; # Jan: AI chat UI
+      logisim-evolution.enable = true; # Logisim-Evolution: Digital logic designer and simulator
+
+      /*
+      Communication & Collaboration
+      */
+      mattermost.enable = true; # Mattermost: open‑source Slack alternative
+      slack.enable = false; # Slack: team communication and collaboration tool
+      tutanota.enable = true; # Tutanota: secure email client
+      signal.enable = true; # Signal: secure messaging app
+      teams.enable = true; # Teams-for-linux: Unofficial Microsoft Teams client for Linux
+      ferdium.enable = false; # Ferdium: All your services in one place built by the community
+
+      /*
+      Productivity / Knowledge Management
+      */
+      bitwarden.enable = false; # Bitwarden: password manager (desktop)
+      iotas.enable = true; # Iotas: lightweight notes manager
+      logseq.enable = false; # Logseq: knowledge base and outliner
+
+      /*
+      Media & Graphics
+      */
+      affinity.enable = true; # Affinity: professional graphics suite
+      eyeOfGnome.enable = true; # Eye of GNOME: image viewer
+      freetube.enable = false; # FreeTube: privacy‑friendly YouTube client
+      gimp.enable = false; # GIMP: GNU Image Manipulation Program
+      kdenlive.enable = false; # Kdenlive: video editing software
+      pixieditor.enable = true; # Pixieditor: Universal editor for all your 2D needs
+      plex.enable = true; # Plex: media player and server client
+
+      /*
+      Utilities / Misc
+      */
+      eddieAirVPN.enable = true; # Eddie AirVPN: VPN client
+      gnomeCalculator.enable = true; # gnomeCalculator: simple calculator
+      gedit.enable = true; # Gedit: GNOME text editor
+      winboat.enable = true; # Winboat: Windows remote desktop via RDP
+      adb.enable = false; # ADB: Android SDK platform tools
+    };
+  };
+}

src/hosts/Garand-Desktop/system-packages.nix

@@ -0,0 +1,5 @@
+{inputs, ...}: {
+  flake.nixosModules.systemPackages.environment.systemPackages = with inputs.pkgs; [
+    # audacity
+  ];
+}

src/hosts/Garand-Desktop/variables.nix

@@ -0,0 +1,64 @@
+_: {
+  flake.nixosModules.variables = {
+    # CPU Architecture
+    # Available options: "x86_64-linux", "aarch64-linux", etc.
+    system = "x86_64-linux";
+
+    # Host Configuration
+    host = "Garand-Desktop";
+    username = "garand_plg";
+
+    # GPU Profile
+    # Available options: "amd", "nvidia", "nvidia-laptop", "intel", "vm"
+    profile = "nvidia";
+
+    # Git Configuration ( For Pulling Software Repos )
+    gitUsername = "GarandPLG";
+    gitEmail = "garandplg@garandplg.com";
+
+    # Hyprland Settings
+    # Examples:
+    # extraMonitorSettings = "monitor = Virtual-1,1920x1080@60,auto,1";
+    # extraMonitorSettings = "monitor = HDMI-A-1,1920x1080@60,auto,1";
+    # You can configure multiple monitors.
+    # Inside the quotes, create a new line for each monitor.
+    extraMonitorSettings = "monitor = DP-1,1920x1080@144,auto,1";
+
+    keyboardLayout = "pl";
+    consoleKeyMap = "pl";
+
+    location = "Żywiec, PL";
+
+    # For Nvidia Prime support
+    intelID = "PCI:1:0:0";
+    nvidiaID = "PCI:0:2:0";
+
+    # Enable NFS
+    enableNFS = true;
+
+    # Enable Printing Support
+    printEnable = true;
+
+    # Set Stylix Image
+    # This will set your color palette
+    # Default background
+    # Add new images to ~/garandos/wallpapers
+    stylixImage = "attack-on-titan-mikasa-ackerman.jpg";
+    #stylixImage = "DW_Pacts.jpg";
+    #stylixImage = "edward-elric-fullmetal-alchemist.jpg";
+    #stylixImage = "fire-nation.jpg";
+    #stylixImage = "four-elements.jpg";
+    #stylixImage = "fullmetal-alchemist-5120x2880-10399.png";
+    #stylixImage = "Grounded_Wallpaper_4K.jpg";
+    #stylixImage = "jablon.jpg";
+    #stylixImage = "rammstein-log-two.jpg";
+    #stylixImage = "rammstein-logo-one.jpg";
+    #stylixImage = "rammstein-logo-three.jpg";
+    #stylixImage = "rammstein-one.jpg";
+    #stylixImage = "1346530.jpeg";
+
+    # Set network hostId if required (needed for zfs)
+    # Otherwise leave as-is
+    hostId = "5ab03f50";
+  };
+}

src/modules/core/boot.nix

@@ -0,0 +1,39 @@
+_: {
+  flake.nixosModules.boot = {pkgs, config, lib, ...}: {
+    boot = {
+      kernelPackages = pkgs.linuxPackages_zen;
+      kernelModules = ["v4l2loopback"];
+      extraModulePackages = [config.boot.kernelPackages.v4l2loopback];
+      kernel.sysctl = {
+        "vm.max_map_count" = 2147483642;
+      };
+      loader = {
+        efi.canTouchEfiVariables = true;
+        limine = {
+          enable = true;
+          style = {
+            wallpapers = [
+              ./../../wallpapers/attack-on-titan-mikasa-ackerman.jpg
+            ];
+            wallpaperStyle = lib.mkForce "centered";
+            backdrop = "${config.stylix.base16Scheme.base00}";
+            interface = {
+              branding = "GarandOS Bootloader";
+              resolution = "1920x1080";
+            };
+          };
+        };
+      };
+      # Appimage Support
+      binfmt.registrations.appimage = {
+        wrapInterpreterInShell = false;
+        interpreter = "${pkgs.appimage-run}/bin/appimage-run";
+        recognitionType = "magic";
+        offset = 0;
+        mask = ''\xff\xff\xff\xff\x00\x00\x00\x00\xff\xff\xff'';
+        magicOrExtension = ''\x7fELF....AI\x02'';
+      };
+      plymouth.enable = true;
+    };
+  };
+}