From 1b8e5032f97b372b6a049eb450548ddf64bd2a54 Mon Sep 17 00:00:00 2001
From: kenji <kenji@hakase>
Date: Fri, 18 Jul 2025 08:33:22 -0500
Subject: [PATCH] added steamos

---
 flake.nix                                |   7 +
 hosts/steamos/configuration.nix          | 167 +++++++++++++++++++++++
 hosts/steamos/hardware-configuration.nix |  47 +++++++
 3 files changed, 221 insertions(+)
 create mode 100644 hosts/steamos/configuration.nix
 create mode 100644 hosts/steamos/hardware-configuration.nix

diff --git a/flake.nix b/flake.nix
index 434dc65..cd00a82 100644
--- a/flake.nix
+++ b/flake.nix
@@ -80,6 +80,13 @@
             ./hosts/hakase/configuration.nix
           ];
         };
+        steamos = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          specialArgs = mkArgs "x86_64-linux";
+          modules = [
+            ./hosts/steamos/configuration.nix
+          ];
+        };
       };
 
       homeConfigurations = {
diff --git a/hosts/steamos/configuration.nix b/hosts/steamos/configuration.nix
new file mode 100644
index 0000000..e8ba292
--- /dev/null
+++ b/hosts/steamos/configuration.nix
@@ -0,0 +1,167 @@
+{
+  config,
+  pkgs,
+  lib,
+  myConfig,
+  ...
+}: {
+  imports = [
+    # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+  ];
+
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+  nixpkgs.config.allowUnfree = true;
+
+  ####################
+  # Boot & Kernel    #
+  ####################
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.loader.timeout = 0;
+  boot.loader.limine.maxGenerations = 5;
+  hardware.amdgpu.initrd.enable = true;
+
+  boot.kernelParams = ["quiet"];
+  boot.kernelPackages = pkgs.linuxPackages_cachyos;
+  boot.kernel.sysctl = {
+    "kernel.split_lock_mitigate" = 0;
+    "kernel.nmi_watchdog" = 0;
+    "kernel.sched_bore" = "1";
+  };
+
+  boot.initrd = {
+    systemd.enable = true;
+    kernelModules = [];
+    verbose = false;
+  };
+  boot.plymouth.enable = true;
+  boot.consoleLogLevel = 0;
+  systemd.extraConfig = "DefaultTimeoutStopSec=5s";
+
+  ################
+  # FileSystems  #
+  ################
+  # fileSystems."/" = {
+  #   options = ["compress=zstd"];
+  # };
+
+  ############
+  # Network  #
+  ############
+  networking = {
+    networkmanager.enable = true;
+    firewall.enable = false;
+    hostName = "nixos";
+  };
+
+  #################
+  # Bluetooth     #
+  #################
+  hardware.bluetooth.enable = true;
+  hardware.bluetooth.settings = {
+    General = {
+      MultiProfile = "multiple";
+      FastConnectable = true;
+    };
+  };
+
+  #################
+  # Sound & RTKit #
+  #################
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  ########################
+  # Graphical & Greetd   #
+  ########################
+
+  services.xserver.enable = false;
+  services.getty.autologinUser = "steamos";
+  services.greetd = {
+    enable = true;
+    settings.default_session = {
+      user = "${myConfig.essenstials.Username}";
+      command = "steam-gamescope > /dev/null 2>&1";
+    };
+  };
+
+  ########################
+  # Programs & Gaming    #
+  ########################
+  services.automatic-timezoned.enable = true;
+  services.flatpak.enable = true;
+  xdg.portal.enable = true;
+  xdg.portal.config.common.default = "*";
+  xdg.portal.extraPortals = [pkgs.xdg-desktop-portal-gtk];
+
+  # programs.steam.gamescopeSession.args = ["-w 1920" "-h 1080" "-r 120" "--xwayland-count 2" "-e" "--hdr-enabled" "--mangoapp"];
+
+  programs = {
+    appimage = {
+      enable = true;
+      binfmt = true;
+    };
+    fish = {enable = true;};
+    mosh = {enable = true;};
+    tmux = {enable = true;};
+    gamescope.capSysNice = true;
+    steam = {
+      enable = true;
+      gamescopeSession.enable = true;
+      extraCompatPackages = with pkgs; [proton-ge-bin];
+      extraPackages = with pkgs; [
+        mangohud
+        gamescope-wsi
+      ];
+    };
+  };
+
+  environment.sessionVariables = {
+    PROTON_USE_NTSYNC = "1";
+    ENABLE_HDR_WSI = "1";
+    DXVK_HDR = "1";
+    PROTON_ENABLE_AMD_AGS = "1";
+    PROTON_ENABLE_NVAPI = "1";
+    ENABLE_GAMESCOPE_WSI = "1";
+    STEAM_MULTIPLE_XWAYLANDS = "1";
+  };
+
+  ###################
+  # Virtualization  #
+  ###################
+  virtualisation.docker.enable = true;
+  virtualisation.docker.enableOnBoot = false;
+  virtualisation.libvirtd.enable = true;
+
+  ###############
+  # Users       #
+  ###############
+  users.users.${myConfig.essenstials.Username} = {
+    isNormalUser = true;
+    description = "SteamOS user";
+    extraGroups = ["networkmanager" "wheel" "docker" "video" "seat" "audio" "libvirtd"];
+    # password = "steamos";
+  };
+
+  #################
+  # Security      #
+  #################
+  security.sudo.wheelNeedsPassword = false;
+  security.polkit.enable = true;
+  services.seatd.enable = true;
+  services.openssh.enable = true;
+
+  ######################
+  ######################
+
+  ########################
+  # System State Version #
+  ########################
+  system.stateVersion = "24.11";
+}
diff --git a/hosts/steamos/hardware-configuration.nix b/hosts/steamos/hardware-configuration.nix
new file mode 100644
index 0000000..0884052
--- /dev/null
+++ b/hosts/steamos/hardware-configuration.nix
@@ -0,0 +1,47 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/532ac73e-1370-4e4d-9d5a-15033de0b96d";
+      fsType = "btrfs";
+      options = [ "subvol=@" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/1368-D3F3";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-uuid/780aa81f-c4d6-478b-9c51-2d60362fdb07";
+      fsType = "ext4";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/b02ef55c-4caf-4a24-a6a2-fb8001eafe22"; }
+    ];
+
+  # 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.enp11s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp10s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}