Initial import

README.md

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+# NixOS Gaming Base
+
+Diese Basis-Config ist fuer ein Desktop-System mit
+
+- Intel Core i9-13900KF
+- AMD Radeon RX 9070 XT
+
+ausgelegt und nutzt jetzt `nixos-unstable`, `Chaotic-Nyx` und COSMIC als Wayland-Desktop. Fokus:
+
+- aktueller Kernel
+- AMD-Grafik mit Chaotic `mesa-git` und 32-Bit-Libs fuer Steam/Proton
+- PipeWire + Gaming-/Desktop-Audio-Tools
+- Steam, Gamescope, MangoHud, Lutris, Heroic, LACT
+- RGB- und Peripherie-Basis fuer deine USB-Geraete
+
+## Struktur
+
+- `flake.nix`: Einstieg ueber `nixos-unstable` + `chaotic-cx/nyx`
+- `configuration.nix`: Host-spezifische Einstiegsdatei
+- `modules/base.nix`: Boot, Kernel, Locale, Nix, Firmware, Governor
+- `modules/chaotic-nyx.nix`: Chaotic-Nyx Aktivierung, `allowUnfree`, `mesa-git`
+- `modules/graphics/mesa-amd.nix`: AMDGPU + Mesa/RADV Basis
+- `modules/audio/pipewire.nix`: PipeWire, JACK, Pulse, Audio-Tools
+- `modules/gaming.nix`: Steam, Gamescope, Wine/Launcher-Stack
+- `modules/desktop/cosmic.nix`: COSMIC Desktop + COSMIC Greeter
+- `modules/peripherals.nix`: OpenRGB, Logitech/Corsair-nahe Tools, USB-Helfer
+
+## USB-Bezug
+
+Die Config beruecksichtigt diese aktuell erkannten Geraete:
+
+- `048d:5702` ITE RGB LED Controller
+- `1235:8211` Focusrite Scarlett Solo 3rd Gen
+- `1b1c:1bfd` Corsair K70 CORE RGB
+- `046d:c539` Logitech Lightspeed Receiver
+
+Daraus folgen aktuell:
+
+- `openrgb` + `hardware.i2c.enable` fuer RGB-/Board-Zugriff
+- `ratbagd` + `piper` fuer Logitech-Gaming-Peripherie
+- `solaar`, `usbutils`, `pciutils` fuer Device-Handling und Diagnose
+- PipeWire-Setup fuer das Scarlett Solo
+- COSMIC als Wayland-Desktop mit `cosmic-greeter`
+- Chaotic `mesa-git` mit Fallback-Spezialisierung `stable-mesa`
+
+## Chaotic-Nyx Hinweis
+
+Die Flake bindet `github:chaotic-cx/nyx/nyxpkgs-unstable` direkt ein und importiert
+`chaotic.nixosModules.default`.
+`modules/chaotic-nyx.nix` aktiviert `chaotic.mesa-git.enable = true;`.
+
+## Nach der Installation
+
+1. Die vom Installer erzeugte `hardware-configuration.nix` nach `./hardware-configuration.nix` kopieren.
+2. Falls noetig `users.users.max` und `networking.hostName` in `configuration.nix` anpassen.
+3. Passwort fuer den Benutzer setzen:
+
+```bash
+passwd max
+```
+
+4. Flake lock erstellen:
+
+```bash
+nix flake lock
+```
+
+5. System aktivieren:
+
+```bash
+sudo nixos-rebuild switch --flake .#nixos-gaming
+```
+
+## Spaeterer Ausbau
+
+- COSMIC weiter tunen, z. B. Autologin, Keyring-Policy, Flatpak
+- OBS / Discord / OpenRGB-Profile / Fancontrol
+- Btrfs-Subvolumes, Snapshots, Impermanence
+- spezielle Kernel- oder Scheduler-Tweaks, falls du sie wirklich brauchst

configuration.nix

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+{ ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./modules/base.nix
+    ./modules/audio/pipewire.nix
+    ./modules/chaotic-nyx.nix
+    ./modules/graphics/mesa-amd.nix
+    ./modules/desktop/cosmic.nix
+    ./modules/gaming.nix
+    ./modules/peripherals.nix
+  ];
+
+  networking.hostName = "nixos-gaming";
+
+  users.users.max = {
+    isNormalUser = true;
+    description = "max";
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+      "audio"
+      "video"
+      "input"
+    ];
+  };
+
+  system.stateVersion = "25.05";
+}

flake.nix

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+{
+  description = "Gaming-focused NixOS config with COSMIC and Chaotic-Nyx";
+
+  nixConfig = {
+    extra-substituters = [
+      "https://nyx-cache.chaotic.cx/"
+    ];
+    extra-trusted-public-keys = [
+      "nyx-cache.chaotic.cx:dJxTrgMC3V3cFfyIiBQDQorG6k1LsqurH/srpMSq7qk="
+    ];
+  };
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    chaotic.url = "github:chaotic-cx/nyx/nyxpkgs-unstable";
+  };
+
+  outputs =
+    { nixpkgs, chaotic, ... }:
+    {
+      nixosConfigurations.nixos-gaming = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          chaotic.nixosModules.default
+          ./configuration.nix
+        ];
+      };
+    };
+}

hardware-configuration.nix

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+{ ... }:
+
+{
+  # Replace this file with the installer-generated hardware-configuration.nix.
+}

modules/audio/pipewire.nix

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+{ pkgs, ... }:
+
+{
+  hardware.pulseaudio.enable = false;
+
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    jack.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    easyeffects
+    helvum
+    pavucontrol
+    qpwgraph
+  ];
+}

modules/base.nix

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+{ config, lib, pkgs, ... }:
+
+{
+  boot = {
+    loader.systemd-boot.enable = true;
+    loader.efi.canTouchEfiVariables = true;
+    kernelPackages = pkgs.linuxPackages_latest;
+    supportedFilesystems = [ "ntfs" ];
+
+    # Helpful for large games, shader caches and some launchers.
+    kernel.sysctl = {
+      "fs.inotify.max_user_watches" = 1048576;
+      "vm.max_map_count" = 2147483642;
+    };
+  };
+
+  networking.networkmanager.enable = true;
+
+  time.timeZone = "Europe/Berlin";
+
+  i18n.defaultLocale = "de_DE.UTF-8";
+  console.keyMap = "de";
+
+  nix.settings = {
+    experimental-features = [ "nix-command" "flakes" ];
+    auto-optimise-store = true;
+  };
+
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 7d";
+  };
+
+  security = {
+    rtkit.enable = true;
+    polkit.enable = true;
+  };
+
+  hardware = {
+    enableRedistributableFirmware = true;
+    cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  };
+
+  services.fwupd.enable = true;
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
+}

modules/chaotic-nyx.nix

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+{ pkgs, ... }:
+
+{
+  nixpkgs.config.allowUnfree = true;
+
+  chaotic = {
+    mesa-git = {
+      enable = true;
+      fallbackSpecialisation = true;
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    mesa_git
+  ];
+}

modules/desktop/cosmic.nix

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+{ pkgs, ... }:
+
+{
+  services.desktopManager.cosmic = {
+    enable = true;
+    xwayland.enable = true;
+  };
+
+  services.displayManager.cosmic-greeter.enable = true;
+
+  environment.systemPackages = with pkgs; [
+    gnome-keyring
+    networkmanagerapplet
+    seahorse
+    wayland-utils
+    wl-clipboard
+    xwayland
+  ];
+}

modules/gaming.nix

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+{ pkgs, ... }:
+
+{
+  programs = {
+    appimage = {
+      enable = true;
+      binfmt = true;
+    };
+    gamemode.enable = true;
+    gamescope.enable = true;
+    steam = {
+      enable = true;
+      remotePlay.openFirewall = true;
+      dedicatedServer.openFirewall = true;
+      localNetworkGameTransfers.openFirewall = true;
+      gamescopeSession.enable = true;
+      protontricks.enable = true;
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    gamemode
+    goverlay
+    heroic
+    lact
+    lutris
+    mangohud
+    protontricks
+    steam-run
+    wineWowPackages.stable
+    winetricks
+  ];
+}

modules/graphics/mesa-amd.nix

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+{ pkgs, ... }:
+
+{
+  hardware.graphics = {
+    enable = true;
+    enable32Bit = true;
+  };
+
+  services.xserver.videoDrivers = [ "amdgpu" ];
+
+  environment.systemPackages = with pkgs; [
+    mesa-demos
+    vulkan-tools
+  ];
+}

modules/peripherals.nix

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+{ pkgs, ... }:
+
+{
+  hardware = {
+    i2c.enable = true;
+    steam-hardware.enable = true;
+  };
+
+  services = {
+    hardware.openrgb.enable = true;
+    ratbagd.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    openrgb
+    pciutils
+    piper
+    solaar
+    usbutils
+  ];
+
+  # Observed devices:
+  # - 048d:5702 Integrated Technology Express RGB LED Controller
+  # - 1235:8211 Focusrite Scarlett Solo (3rd Gen.)
+  # - 1b1c:1bfd Corsair K70 CORE RGB
+  # - 046d:c539 Logitech Lightspeed receiver
+}