add thinkrac

flake.nix

@@ -161,6 +161,10 @@
           config = ./machine/pc-installer;
           system = "x86_64-linux";
         };
+        thinkrac = {
+          config = ./machine/thinkrac;
+          system = "x86_64-linux";
+        };
       };
       containers = mapAttrs (_: container:
         mkSystem {

machine/pc-installer/default.nix

@@ -3,7 +3,19 @@
   nixos-config,
   lib,
   ...
-}: {
+}: let
+  dependencies =
+    [
+      nixos-config.nixosConfigurations.thinkrac.config.system.build.toplevel
+      nixos-config.nixosConfigurations.thinkrac.config.system.build.diskoScript
+      nixos-config.nixosConfigurations.thinkrac.config.system.build.diskoScript.drvPath
+      nixos-config.nixosConfigurations.thinkrac.pkgs.stdenv.drvPath
+      (nixos-config.nixosConfigurations.thinkrac.pkgs.closureInfo {rootPaths = [];}).drvPath
+    ]
+    ++ map (i: i.outPath) (builtins.filter builtins.isAttrs (builtins.attrValues pureInputs));
+
+  closureInfo = pkgs.closureInfo {rootPaths = dependencies;};
+in {
   networking.hostName = "pc-installer";
   imports = [
     "${nixos-config}/config"
@@ -17,12 +29,24 @@
     configuration.imports = [
       ./graphical.nix
       "${nixos-config}/config/graphical/plymouth.nix"
+      {
+        nix.auto-update.specialisation = "graphical";
+      }
     ];
   };
   specialisation.graphical-verbose = {
     configuration.imports = [
       ./graphical.nix
+      {
+        nix.auto-update.specialisation = "graphical-verbose";
+      }
     ];
   };
   isInstaller = true;
+  environment.systemPackages = [
+    (pkgs.writeShellScriptBin "install-thinkrac-unattended" ''
+      set -eux
+      exec ${pkgs.disko}/bin/disko-install --flake "${nixos-config}#thinkrac" --disk main "${nixos-config.nixosConfigurations.thinkrac.config.disko.devices.disk.main.device}"
+    '')
+  ];
 }

machine/pc-installer/graphical.nix

@@ -3,7 +3,6 @@
   nixos-config,
   ...
 }: {
-  nix.auto-update.specialisation = "graphical";
   imports = [
     "${nixos-config}/config/graphical.nix"
   ];

machine/thinkrac/default.nix

@@ -0,0 +1,24 @@
+{
+  config,
+  nixos-config,
+  lib,
+  ...
+}: {
+  networking.hostName = "thinkrac";
+  imports = [
+    "${nixos-config}/config"
+    ./disko.nix
+    ./hardware.nix
+    "${nixos-config}/config/networkmanager.nix"
+    "${nixos-config}/config/graphical.nix"
+  ];
+  system.stateVersion = "24.11";
+  specialisation.quiet = {
+    configuration.imports = [
+      "${nixos-config}/config/graphical/plymouth.nix"
+      {
+        nix.auto-update.specialisation = "quiet";
+      }
+    ];
+  };
+}

machine/thinkrac/disko.nix

@@ -0,0 +1,63 @@
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/disk/by-id/nvme-eui.002538b931b01f46";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              start = "1M";
+              end = "1024M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = ["umask=0077"];
+              };
+            };
+            root = {
+              end = "-24G";
+              content = {
+                type = "btrfs";
+                extraArgs = ["-f"]; # Override existing partition
+                # Subvolumes must set a mountpoint in order to be mounted,
+                # unless their parent is mounted
+                subvolumes = {
+                  # Subvolume name is different from mountpoint
+                  "/root" = {
+                    mountOptions = ["compress=zstd"];
+                    mountpoint = "/";
+                  };
+                  # Subvolume name is the same as the mountpoint
+                  "/persistent" = {
+                    mountOptions = ["compress=zstd"];
+                    mountpoint = "/persistent";
+                  };
+                  # Parent is not mounted so the mountpoint must be set
+                  "/nix" = {
+                    mountOptions = ["compress=zstd" "noatime"];
+                    mountpoint = "/nix";
+                  };
+                };
+                mountpoint = "/partition-root";
+              };
+            };
+            swap = {
+              size = "100%";
+              content = {
+                type = "swap";
+                discardPolicy = "both";
+                resumeDevice = true; # resume from hiberation from this device
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

machine/thinkrac/hardware.nix

@@ -0,0 +1,53 @@
+{
+  modulesPath,
+  nixos-hardware,
+  ...
+}: {
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+    nixos-hardware.nixosModules.lenovo-thinkpad-t470s
+    nixos-hardware.nixosModules.common-cpu-intel
+    nixos-hardware.nixosModules.common-gpu-intel
+    nixos-hardware.nixosModules.common-pc-laptop-ssd
+  ];
+  hardware.cpu.intel.updateMicrocode = true;
+  boot.initrd.availableKernelModules = ["xhci_pci" "nvme" "usb_storage" "sd_mod"];
+  boot.initrd.kernelModules = [];
+  boot.kernelModules = ["kvm-intel"];
+  boot.extraModulePackages = [];
+  nix.settings.cores = 4;
+  # use the lowest frequency possible, to save power
+  powerManagement.cpuFreqGovernor = "powersave";
+  # lm_sensors who cares
+  environment.etc."sysconfig/lm_sensors".text = ''
+    # Generated by sensors-detect on Tue Aug  7 10:54:09 2018
+    # This file is sourced by /etc/init.d/lm_sensors and defines the modules to
+    # be loaded/unloaded.
+    #
+    # The format of this file is a shell script that simply defines variables:
+    # HWMON_MODULES for hardware monitoring driver modules, and optionally
+    # BUS_MODULES for any required bus driver module (for example for I2C or SPI).
+
+    HWMON_MODULES="coretemp"
+  '';
+  services.thermald.enable = true;
+  boot.extraModprobeConfig = ''
+    # enable power savings mode of snd_hda_intel
+    options snd-hda-intel power_save=1 power_save_controller=y
+    # enable power savings mode of igpu, enable framebuffer compression, downclock the LVDS connection
+    options i915 i915_enable_rc6=7 i915_enable_fbc=1 lvds_downclock=1
+    # automatically suspend USB devices
+    options usbcore autosuspend=2
+    # Fan control for thinkpads
+    options thinkpad_acpi fan_control=1
+    options zfs zfs_arc_max=4294967296
+  '';
+  boot.kernel.sysctl = {
+    # Probably unnecessary
+    "kernel.nmi_watchdog" = "0";
+    "vm.laptop_mode" = "5";
+    # The kernel flusher threads will periodically wake up and write `old' data out to disk.  This
+    # tunable expresses the interval between those wakeups, in 100'ths of a second (Default is 500).
+    "vm.dirty_writeback_centisecs" = "1500";
+  };
+}