NixOS on Steam Deck OLED

linux/protostar/configuration.nix

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+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running `nixos-help`).
+
+{ ... }:
+
+{
+  # Configuration boot
+  boot.loader.grub.device = "nodev";
+
+  # Change secrets file
+  constants.sopsFile = ../../common/auths.yaml;
+
+  # Disable sudo password
+  security.sudo.wheelNeedsPassword = false;
+
+  # Set timezone automatically
+  services.automatic-timezoned.enable = true;
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It's perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.11"; # Did you read the comment?
+
+}
+

linux/protostar/default.nix

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+{ inputs, ... }:
+
+{
+  imports = with inputs; [
+    disko.nixosModules.default
+    jovian.nixosModules.default
+  ] ++ [
+    ./configuration.nix
+    ./disko.nix
+    ./hardware-configuration.nix
+    ./network.nix
+    # ./syncthing.nix
+    ./tailscale.nix
+    ./zfs.nix
+    ../../common
+  ];
+}

linux/protostar/disko.nix

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+{ ... }:
+
+{
+  disko.devices = {
+    # Partition the physical disk
+    disk.storage = {
+      device = "/dev/nvme0n1";
+      content = {
+        type = "gpt";
+        partitions = {
+          esp = {
+            size = "1G";
+            type = "ef00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+            };
+          };
+          zfs = {
+            size = "100%";
+            content = {
+              type = "zfs";
+              pool = "zroot";
+            };
+          };
+        };
+      };
+    };
+
+    # Construct the primary zfs pool for this system.
+    zpool.zroot = {
+      type = "zpool";
+      options = {
+        ashift = "12";
+        autotrim = "on";
+        listsnapshots = "on";
+      };
+      rootFsOptions = {
+        acltype = "posix";
+        atime = "off";
+        compression = "zstd";
+        dnodesize = "auto";
+        mountpoint = "none";
+        normalization = "formD";
+        xattr = "sa";
+      };
+      datasets = {
+        # Create dataset for home
+        home = {
+          type = "zfs_fs";
+          mountpoint = "/home";
+        };
+        # Create dataset for nix store
+        nix = {
+          type = "zfs_fs";
+          mountpoint = "/nix";
+        };
+        # Create dataset for root
+        root = {
+          type = "zfs_fs";
+          mountpoint = "/";
+        };
+        # Reserve space for performance
+        reservation = {
+          type = "zfs_fs";
+          options.refreservation = "128G";
+        };
+      };
+    };
+  };
+
+}

linux/protostar/gui.nix

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+{ config, ... }:
+
+let usr = config.constants.userName; in {
+  jovian = {
+    decky-loader.enable = true;
+    steam = {
+      enable = true;
+      autoStart = true;
+      desktopSession = "plasma";
+      user = usr;
+    };
+  };
+
+  services.xserver = {
+    enable = true;
+    desktopManager.plasma6.enable = true;
+  };
+}

linux/protostar/hardware-configuration.nix

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+# 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" "usbhid" "sdhci_pci" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  # 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;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

linux/protostar/network.nix

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+{ config, ... }:
+
+let hn = config.networking.hostName; in {
+  networking = {
+    domain = config.constants.domain;
+    firewall.trustedInterfaces = [ config.services.tailscale.interfaceName ];
+    hostId = "e6449321";
+    networkmanager = {
+      enable = true;
+      wifi.backend = "iwd";
+    };
+    nftables.enable = true;
+    tempAddresses = "disabled";
+    wireless.iwd.enable = true;
+  };
+  services.openssh.enable = true;
+}

linux/protostar/syncthing.nix

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+{ config, ... }:
+
+{
+  services.syncthing = let home = config.constants.homeDir; in {
+    enable = true;
+    configDir = "${home}/.config/syncthing";
+    dataDir = "${home}/.local/share/syncthing";
+    openDefaultPorts = true;
+    overrideDevices = true;
+    overrideFolders = true;
+    settings = let pc = "blitzar"; in {
+      devices.${pc} = {
+        name = pc;
+        id = "KGCBCIZ-GG6KMQ2-FLK5BWW-GLCEDML-5LCI24S-UKO5UWL-HWNCPYX-ZWWD5AQ";
+      };
+      folders.music = {
+        enable = true;
+        devices = [ pc ];
+        id = "Music";
+        label = "Music";
+        path = "~/Music";
+        type = "receiveonly";
+      };
+    };
+    user = config.constants.userName;
+  };
+}

linux/protostar/tailscale.nix

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+{ ... }:
+
+{
+  services.tailscale = {
+    enable = true;
+    port = 25172;
+    useRoutingFeatures = "client";
+  };
+}

linux/protostar/zfs.nix

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+{ config, ... }:
+
+{
+
+  boot = {
+    kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
+    loader.grub.zfsSupport = true;
+    zfs.enableUnstable = true;
+  };
+
+  services.zfs = {
+    autoScrub.enable = true;
+    trim.enable = true;
+  };
+
+}
+