reorganize hardware

system/flake.nix

@@ -24,7 +24,6 @@
 
   outputs = inputs@{ self, nixpkgs, utils, nixos-hardware, impermanence, nix-gaming, nixos-mailserver, ... }:
   let
-    hw = nixos-hardware.nixosModules;
     # IRL-related stuff I'd rather not put into git
     priv =
       if builtins.pathExists ./private.nix then (import ./private.nix)
@@ -32,18 +31,19 @@
       else { };
     getPriv = hostname: with builtins; if hasAttr hostname priv then getAttr hostname priv else { };
     common = hostname: [ (getPriv hostname) ];
-    extraArgs = {
-      inherit nixpkgs;
-    };
     lib = nixpkgs.lib // {
       quoteListenAddr = addr:
         if nixpkgs.lib.hasInfix ":" addr then "[${addr}]" else addr;
     };
+    mkHost = args @ { system ? "x86_64-linux", modules, ... }: {
+      inherit system;
+      extraArgs = {
+        inherit nixpkgs;
+      };
       specialArgs = {
         inherit lib;
+        hardware = nixos-hardware.nixosModules;
       };
-    mkHost = args @ { system ? "x86_64-linux", modules, ... }: {
-      inherit system extraArgs specialArgs;
     } // args;
   in utils.lib.mkFlake {
     inherit self inputs;
@@ -54,24 +54,19 @@
       ./modules/common.nix
       impermanence.nixosModule 
     ];
-    hosts = {
+    hosts = builtins.mapAttrs (_: mkHost) {
-      nixmsi = mkHost {
+      nixmsi = {
         modules = [
-          ./hosts/nixmsi.nix
           nix-gaming.nixosModules.pipewireLowLatency
-          hw.common-pc-ssd # enables fstrim
+          ./hardware/msi_delta_15.nix
-          hw.common-cpu-amd # microcode
+          ./hosts/nixmsi.nix
-          hw.common-cpu-amd-pstate # amd-pstate
-          hw.common-gpu-amd # configures drivers
-          hw.common-pc-laptop # enables tlp
         ] ++ common "nixmsi";
       };
-      nixserver = mkHost {
+      nixserver = {
         modules = [
-          ./hosts/nixserver
           nixos-mailserver.nixosModules.default
-          hw.common-pc-hdd
+          ./hardware/hp_probook_g0.nix
-          hw.common-cpu-intel
+          ./hosts/nixserver
         ] ++ common "nixserver";
       };
     };

system/hardware/hp_probook_g0.nix

@@ -0,0 +1,17 @@
+{ hardware
+, ... }:
+
+{
+  imports = with hardware; [
+    common-pc-hdd
+    common-cpu-intel
+    common-gpu-amd
+    common-pc-laptop
+  ];
+  common.resolution = "1366x768";
+  boot = {
+    initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "sr_mod" "rtsx_pci_sdmmc" ];
+    kernelModules = [ "kvm-intel" ];
+    vfio.intelCpu = true;
+  };
+}

system/hardware/msi_delta_15.nix

@@ -0,0 +1,24 @@
+{ hardware
+, ... }:
+
+{
+  imports = with hardware; [
+    common-pc-ssd # enables fstrim
+    common-cpu-amd # microcode
+    common-cpu-amd-pstate # amd-pstate
+    common-gpu-amd # configures drivers
+    common-pc-laptop # enables tlp
+  ];
+  common.resolution = "1920x1080";
+  vfio.pciIDs = [ "1002:73df" "1002:ab28" ];
+  boot = {
+    initrd.availableKernelModules = [ "nvme" "xhci_pci" ];
+    kernelParams = [
+      # disable PSR to *hopefully* avoid random hangs
+      # this one didnt help
+      "amdgpu.dcdebugmask=0x10"
+      # maybe this one will?
+      "amdgpu.noretry=0"
+    ];
+  };
+}

system/hosts/nixmsi.nix

@@ -1,4 +1,8 @@
-{ lib, pkgs, ... }:
+{ lib
+, pkgs
+, config
+, ... }:
+
 let
   efiPart = "/dev/disk/by-uuid/D77D-8CE0";
 
@@ -37,7 +41,6 @@ in {
 
   boot = {
     initrd = {
-      availableKernelModules = [ "nvme" "xhci_pci" ];
       # insert crypto_keyfile into initrd so that grub can tell the kernel the
       # encryption key once I unlock the /boot partition
       secrets."/crypto_keyfile.bin" = "/boot/initrd/crypto_keyfile.bin";
@@ -64,12 +67,6 @@ in {
       "resume=/@swap/swapfile"
       # resume_offset = $(btrfs inspect-internal map-swapfile -r path/to/swapfile)
       "resume_offset=533760"
-      "fbcon=font:TER16x32"
-      # disable PSR to *hopefully* avoid random hangs
-      # this one didnt help
-      "amdgpu.dcdebugmask=0x10"
-      # maybe this one will?
-      "amdgpu.noretry=0"
     ];
     loader = {
       grub = {
@@ -78,8 +75,6 @@ in {
         efiSupport = true;
         # nodev = disable bios support 
         device = "nodev";
-        gfxmodeEfi = "1920x1080";
-        gfxmodeBios = "1920x1080";
       };
       efi.canTouchEfiVariables = true;
       efi.efiSysMountPoint = "/boot/efi";
@@ -114,8 +109,7 @@ in {
 
   # see modules/vfio.nix
   vfio.enable = true;
-  vfio.pciIDs = [ "1002:73df" "1002:ab28" ];
+  vfio.libvirtdGroup = [ config.common.mainUsername ];
-  vfio.libvirtdGroup = [ "user" ];
   
   # because libvirtd's nat is broken for some reason...
   networking.nat = {
@@ -224,7 +218,7 @@ in {
   # programs.firejail.enable = true;
   # doesn't work:
   # programs.wireshark.enable = true;
-  # users.groups.wireshark.members = [ "user "];
+  # users.groups.wireshark.members = [ config.common.mainUsername"];
   services.printing.enable = true;
   # from nix-gaming
   services.pipewire.lowLatency = {

system/hosts/nixserver/default.nix

@@ -40,10 +40,6 @@ in {
   system.stateVersion = "22.11";
 
   boot = {
-    initrd = {
-      availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "sr_mod" "rtsx_pci_sdmmc" ];
-    };
-    kernelModules = [ "kvm-intel" ];
     loader = {
       grub = {
         enable = true;
@@ -51,8 +47,6 @@ in {
         version = 2;
         efiSupport = true;
         efiInstallAsRemovable = true;
-        gfxmodeEfi = "1920x1080";
-        gfxmodeBios = "1920x1080";
       };
       efi.efiSysMountPoint = "/boot/efi";
     };
@@ -71,6 +65,7 @@ in {
   };
   zramSwap.enable = true;
   swapDevices = [ ];
+  services.tlp.enable = false;
   impermanence = {
     enable = true;
     path = /persist;

system/modules/common.nix

@@ -22,6 +22,11 @@
           default = false;
           description = "make getty autologin to the main user";
         };
+        resolution = mkOption {
+          type = with types; nullOr str;
+          default = null;
+          description = "resolution (none/1280x720/1920x1080)";
+        };
       };
     };
     default = { };
@@ -49,9 +54,15 @@
       linkInputs = true;
     };
     systemd.services.nix-daemon.serviceConfig.LimitSTACKSoft = "infinity";
-    boot.kernelParams = [
+    boot.kernelParams = lib.optionals (cfg.resolution != null) [
       "consoleblank=60"
-    ];
+    ] ++ (lib.optionals (cfg.resolution == "1920x1080") [
+      "fbcon=font:TER16x32"
+    ]);
+    boot.loader.grub = lib.mkIf (cfg.resolution != null) {
+      gfxmodeEfi = cfg.resolution;
+      gfxmodeBios = cfg.resolution;
+    };
 
     nixpkgs.overlays = [ (self: super: import ../pkgs { pkgs = super; inherit lib; }) ];
     hardware.enableRedistributableFirmware = true;
@@ -92,7 +103,8 @@
       isNormalUser = true;
       extraGroups = [ "wheel" ];
     };
-    services.xserver.libinput.enable = lib.mkIf cfg.workstation true;
+    # nixos-hardware uses mkDefault here, so we use slightly higher priority
+    services.xserver.libinput.enable = lib.mkOverride 999 cfg.workstation;
     /*
     services.xserver = {
       enable = true;