host specialisation

common/graphics/sway.nix

@@ -116,7 +116,7 @@ in
         let
           build_definition_lines = mapAttrsToList (name: value: "set \$${name} ${value}");
           build_keybind_lines = mapAttrsToList (key: value: "bindsym ${key} ${value}");
-          build_exec_lines = e: map (item: "${e} " + (if isString item then item else (getExe item)));
+          build_exec_lines = e: map (item: "${e} " + (if isDerivation item then (getExe item) else item));
           build_mode_lines = mapAttrsToList (
             name: value: ''
               mode "${name}" {

common/hardware/laptop.nix

@@ -18,12 +18,12 @@ in
           lshw
           pciutils
           usbutils
-          opentabletdriver
           ddcutil
           python312Packages.py-cpuinfo
           (writeShellScriptBin "lsiommu" ./lsiommu)
         ]
         ++ lib.optionals graphical [
+          opentabletdriver
           ddcui
           wootility
         ];
@@ -57,14 +57,8 @@ in
 
       boot = {
         kernelParams = [
-          # "splash"
           "quiet"
-          #        "intel_iommu=on"
-          #        "iommu=force"
-          #        "pcie_acs_override=downstream"
-          #        "mmio_stale_data=full,nosmt"
-          #        "pcie_aspm=off"
-        ]; # "vfio-pci.ids=10de:1aeb,10de:2191,10de:1aed,10de:1aec" ];
+        ];
         loader.efi.canTouchEfiVariables = true;
         initrd.availableKernelModules = [
           "xhci_pci"
@@ -86,15 +80,10 @@ in
           }))
         ];
         kernelModules = [
-          #       "kvm-intel"
-          #       "vfio_pci"
-          #       "vfio_iommu_type1"
-          #       "vfio"
           "ddcci_backlight"
           "i2c-dev"
           "ec_sys"
         ];
-        # blacklistedKernelModules = [ "i2c_nvidia_gpu" ];
       };
     };
 

common/tooling/default.nix

@@ -61,6 +61,8 @@ in
           qdirstat
           libva-utils
           gparted
+          jetbrains.clion
+          jetbrains.idea-community
         ];
 
       programs.git = {

configuration.nix

@@ -4,10 +4,7 @@
     ./overlays
     ./common
     ./fake_flake.nix
-    ./specific/grimm-nixos-laptop/configuration.nix
-    ./modules/users.nix
-    #      ./modules/kvm.nix
-    ./sway
+    ./users.nix
   ];
 
   # Bootloader.
@@ -16,49 +13,12 @@
     kernelPackages = pkgs.linuxPackages_zen;
   };
 
-  # Enable flatpaks
-  # services.flatpak.enable = true;
-
   grimmShared = {
     enable = true;
     locale = true;
-    printing = true;
-    portals = true;
     network = true;
     tooling = {
       enable = true;
-      pass = true;
-      lilypond = true;
     };
-    sound = {
-      enable = true;
-      midi = true;
-    };
-    graphical = true;
-    firefox = {
-      enable = true;
-      plugins = {
-        "uBlock0@raymondhill.net" = "ublock-origin";
-        "gdpr@cavi.au.dk" = "consent-o-matic";
-        "{41f9e51d-35e4-4b29-af66-422ff81c8b41}" = "disable-javascript";
-        "{7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}" = "styl-us";
-        "wappalyzer@crunchlabz.com" = "wappalyzer";
-        "{b9db16a4-6edc-47ec-a1f4-b86292ed211d}" = "video-downloadhelper";
-        "{1526fba1-ac33-4dfc-99d8-163e6129f7b9}" = "reveye-ris";
-      };
-    };
-    cloudSync = {
-      enable = true;
-      username = "Grimmauld";
-      server = "cloud.grimmauld.de";
-      passwordFile = config.age.secrets.nextcloud_pass.path;
-    };
-
-    spotify.enable = true;
-  };
-
-  age.secrets.nextcloud_pass = {
-    file = ./secrets/nextcloud_pass.age;
-    mode = "777";
   };
 }

fake_flake.nix

@@ -9,6 +9,14 @@ let
   nivSources = import ./nix/sources.nix;
   asGithubRef = src: "github:${src.owner}/${src.repo}/${src.rev}";
 
+  build_target = let env_host = builtins.getEnv "NIXOS_TARGET_HOST"; in if env_host != "" then env_host else builtins.replaceStrings ["\n"] [""] (lib.toLower (builtins.readFile /proc/sys/kernel/hostname));
+
+  host_modules = {
+    grimmauld-nixos = [
+      ./specific/grimm-nixos-laptop/configuration.nix
+    ];
+  };
+
   nixpkgs_patches = [
     {
       # tlpui
@@ -22,7 +30,7 @@ in
     "${nivSources.agenix}/modules/age.nix"
     (import "${nivSources.lix-module}/module.nix" { lix = nivSources.lix-pkg; })
     (builtins.getFlake (asGithubRef nivSources.chaotic)).nixosModules.default # fixme: ideally we'd not rely on the flake syntax to load the module
-  ];
+  ] ++ lib.optionals (builtins.hasAttr build_target host_modules) host_modules.${build_target};
 
   nixpkgs.hostPlatform = system;
 

modules/kvm.nix

@@ -1,76 +0,0 @@
-{ pkgs, ... }:
-let
-  loadvfio = pkgs.writeShellScriptBin "loadvfio" ''
-    udevadm trigger --verbose --type=devices --action=remove --subsystem-match=drm --property-match="MINOR=1"
-    sleep 2
-    rmmod -f nvidia_drm nvidia_modeset nvidia_uvm nvidia
-    echo -n 0000:01:00.0 > /sys/bus/pci/devices/0000:01:00.0/driver/unbind
-    echo -n 0000:01:00.1 > /sys/bus/pci/drivers/vfio-pci/bind
-    echo -n 0000:01:00.0 > /sys/bus/pci/drivers/vfio-pci/bind
-  '';
-
-  loadnvidia = pkgs.writeShellScriptBin "loadnvidia" ''
-    echo 0000:01:00.0 > /sys/bus/pci/devices/0000:01:00.0/driver/unbind
-    echo 0000:01:00.1 > /sys/bus/pci/devices/0000:01:00.1/driver/unbind
-    modprobe nvidia
-    modprobe nvidia_drm
-    modprobe nvidia_modeset
-    echo -n 0000:01:00.0 > /sys/bus/pci/drivers/snd_hda_intel/bind
-    nvidia-smi -i 0 -pm 1
-  '';
-
-  qemuHook = pkgs.writeShellScript "qemu" ''
-    #
-    # Author: Sebastiaan Meijer (sebastiaan@passthroughpo.st)
-    #
-    # Copy this file to /etc/libvirt/hooks, make sure it's called "qemu".
-    # After this file is installed, restart libvirt.
-    # From now on, you can easily add per-guest qemu hooks.
-    # Add your hooks in /etc/libvirt/hooks/qemu.d/vm_name/hook_name/state_name.
-    # For a list of available hooks, please refer to https://www.libvirt.org/hooks.html
-    #
-    GUEST_NAME="$1"
-    HOOK_NAME="$2"
-    STATE_NAME="$3"
-    MISC="''${@:4}"
-    BASEDIR="$(dirname $0)"
-    HOOKPATH="$BASEDIR/qemu.d/$GUEST_NAME/$HOOK_NAME/$STATE_NAME"
-    set -e # If a script exits with an error, we should as well.
-    # check if it's a non-empty executable file
-    if [ -f "$HOOKPATH" ] && [ -s "$HOOKPATH"] && [ -x "$HOOKPATH" ]; then
-        eval \"$HOOKPATH\" "$@"
-    elif [ -d "$HOOKPATH" ]; then
-        while read file; do
-            # check for null string
-            if [ ! -z "$file" ]; then
-              eval \"$file\" "$@"
-            fi
-        done <<< "$(find -L "$HOOKPATH" -maxdepth 1 -type f -executable -print;)"
-    fi
-  '';
-in
-{
-  environment.systemPackages = [
-    loadnvidia
-    loadvfio
-  ];
-  security.sudo.extraConfig = "grimmauld ALL=(ALL) NOPASSWD:/run/current-system/sw/bin/loadnvidia, /run/current-system/sw/bin/loadvfio";
-  virtualisation.libvirtd = {
-    enable = true;
-    qemu = {
-      runAsRoot = false;
-      ovmf = {
-        enable = true;
-        packages = [
-          #    pkgs.pkgsCross.aarch64-multiplatform.OVMF.fd # AAVMF
-          pkgs.OVMF.fd
-        ];
-      };
-    };
-    onBoot = "ignore";
-    onShutdown = "shutdown";
-  };
-
-  programs.virt-manager.enable = true;
-  virtualisation.spiceUSBRedirection.enable = true;
-}

specific/grimm-nixos-laptop/configuration.nix

@@ -1,15 +1,55 @@
-{ pkgs, ... }:
+{ pkgs, config, ... }:
 {
   imports = [
     # Include the results of the hardware scan.
     ./hardware-configuration.nix 
+    # ./modules/kvm.nix
+    ./../../sway
   ];
 
   age.identityPaths = [ "/home/grimmauld/.ssh/id_ed25519" ];
 
+  grimmShared = {
+    tooling = {
+      pass = true;
+      lilypond = true;
+    };
+    gaming = true;
+    printing = true;
+    portals = true;
+    sound = {
+      enable = true;
+      midi = true;
+    };
+    graphical = true;
+    firefox = {
+      enable = true;
+      plugins = {
+        "uBlock0@raymondhill.net" = "ublock-origin";
+        "gdpr@cavi.au.dk" = "consent-o-matic";
+        "{41f9e51d-35e4-4b29-af66-422ff81c8b41}" = "disable-javascript";
+        "{7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}" = "styl-us";
+        "wappalyzer@crunchlabz.com" = "wappalyzer";
+        "{b9db16a4-6edc-47ec-a1f4-b86292ed211d}" = "video-downloadhelper";
+        "{1526fba1-ac33-4dfc-99d8-163e6129f7b9}" = "reveye-ris";
+      };
+    };
+    cloudSync = {
+      enable = true;
+      username = "Grimmauld";
+      server = "cloud.grimmauld.de";
+      passwordFile = config.age.secrets.nextcloud_pass.path;
+    };
+
+    spotify.enable = true;
+  };
+
+  age.secrets.nextcloud_pass = {
+    file = ./../../secrets/nextcloud_pass.age;
+    mode = "777";
+  };
+
   networking.hostName = "grimmauld-nixos";
 
   system.stateVersion = "23.05";
-
-  grimmShared.gaming = true;
 }

users.nix

@@ -9,7 +9,7 @@
     isNormalUser = true;
     # shell = pkgs.xonsh;
     description = "grimmauld";
-    extraGroups = [
+    extraGroups = lib.intersectLists (lib.attrNames config.users.groups) [
       "networkmanager"
       "kvm"
       "wheel"
@@ -23,7 +23,7 @@
       "pipewire"
       "gamemode"
       "i2c"
-    ];
+    ]; # only add to groups that actually exist on this system
 
     syncPaths = [
       { remote = "3d"; }
@@ -32,10 +32,7 @@
       { remote = "Videos"; }
     ];
 
-    packages = with pkgs; [
-      jetbrains.clion
-      jetbrains.idea-community
-
+    packages = with pkgs; lib.optionals config.grimmShared.graphical [
       webcord
       discord
       obs-studio