modularize baseline system configuration

home/modules/baseline.nix

@@ -8,7 +8,7 @@ with lib; let
   cfg = config.local.baseline;
 in {
   options.local.baseline = {
-    enable = mkEnableOption "Basic settings";
+    enable = mkEnableOption "Basic home settings";
   };
   config = mkIf cfg.enable {
     xdg.enable = true;

sys/default.nix

@@ -1 +1,12 @@
-{}
+{
+  flakes,
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+with lib; {
+  imports = [
+    ./modules
+  ];
+}

sys/modules/baseline.nix

@@ -0,0 +1,76 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.local.sys.baseline;
+in {
+  options.local.sys.baseline = {
+    enable = mkEnableOption "Basic system settings";
+  };
+  config = mkIf cfg.enable {
+    system.stateVersion = "24.05"; # DO NOT CHANGE
+
+    nix = {
+      package = pkgs.nixVersions.stable;
+
+      extraOptions = ''
+        experimental-features = nix-command flakes
+      '';
+
+      # Not interested in the global flake registry
+      settings.flake-registry = "";
+    };
+
+    console = {
+      keyMap = "us";
+    };
+
+    programs = {
+      zsh.enable = true;
+      fuse.userAllowOther = true;
+    };
+
+    environment = {
+      pathsToLink = [
+        "/share/zsh"
+      ];
+
+      systemPackages = with pkgs;
+        [
+          git
+          vim
+        ]
+        ++ optionals (!config.boot.isContainer) [
+          lm_sensors
+          lshw
+          parted
+          pciutils
+          smartmontools
+          usbutils
+        ];
+    };
+
+    services = {
+      openssh.enable = mkDefault true;
+
+      earlyoom = {
+        enable = mkDefault true;
+        enableNotifications = true;
+      };
+    };
+
+    # Coredumps are a security risk and may use up a lot of disk space
+    systemd.coredump.extraConfig = ''
+      Storage=none
+      ProcessSizeMax=0
+    '';
+
+    security.dhparams = {
+      enable = true;
+      defaultBitSize = 4096;
+    };
+  };
+}

sys/modules/default.nix

@@ -0,0 +1,10 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: {
+  imports = [
+    ./baseline.nix
+  ];
+}

sys/platforms/posixlycorrect/default.nix

@@ -13,6 +13,10 @@
     ./yubikey.nix
   ];
 
+  local.sys = {
+    baseline.enable = true;
+  };
+
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
@@ -34,10 +38,6 @@
 
   # Select internationalisation properties.
   i18n.defaultLocale = "en_US.UTF-8";
-  console = {
-    font = "Lat2-Terminus16";
-    keyMap = "us";
-  };
 
   # Enable the X11 windowing system.
   services.xserver = {
@@ -64,9 +64,6 @@
     wireplumber.enable = true;
   };
 
-  programs.zsh.enable = true;
-  environment.pathsToLink = ["/share/zsh"];
-
   users = {
     users.fabian = {
       isNormalUser = true;
@@ -82,11 +79,6 @@
     pkgs.android-udev-rules
   ];
 
-  users.users.temp = {
-    isNormalUser = true;
-    extraGroups = ["wheel"];
-  };
-
   virtualisation.libvirtd.qemu.package = pkgs.qemu_kvm;
   virtualisation.libvirtd.qemu.ovmf.enable = true;
   virtualisation.libvirtd.qemu.ovmf.packages = [pkgs.OVMFFull.fd];
@@ -95,20 +87,4 @@
   # boot.kernelModules = [ "vfio" "vfio_iommu_type1" "vfio_pci" "vfio_virqfd" ];
   # boot.kernelParams = [ "amd_iommu=on" "iommu=pt" "vfio-pci.ids=1002:699f,1002:aae0" "video=efifb:off" ];
   virtualisation.libvirtd.onBoot = "start";
-
-  nix = {
-    package = pkgs.nixVersions.stable;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
-  };
-
-  services.openssh.enable = true;
-
-  services.earlyoom = {
-    enable = true;
-    enableNotifications = true;
-  };
-
-  system.stateVersion = "24.05"; # DO NOT CHANGE
 }

sys/platforms/vps/default.nix

@@ -13,13 +13,11 @@ with lib; {
     ./srv
   ];
 
-  environment.systemPackages = with pkgs; [
+  local.sys = {
-    vim
+    baseline.enable = true;
-    git
+  };
-  ];
 
   services.openssh = {
-    enable = true;
     settings.PasswordAuthentication = false;
   };
 
@@ -38,24 +36,8 @@ with lib; {
     };
   };
 
-  programs = {
-    zsh.enable = true;
-    fuse.userAllowOther = true;
-  };
-
   networking.hostName = "vps";
 
-  nix = {
-    package = pkgs.nixVersions.stable;
-
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
-
-    # No me interesa el global registry
-    settings.flake-registry = "";
-  };
-
   users = {
     users.fabian = {
       isNormalUser = true;
@@ -72,11 +54,6 @@ with lib; {
     DefaultTimeoutStartSec=900s
   '';
 
-  security.dhparams = {
-    enable = true;
-    defaultBitSize = 4096;
-  };
-
   fileSystems = {
     "/mnt/export2008" = {
       device = "172.16.129.19:/nas/5876";
@@ -91,18 +68,5 @@ with lib; {
     };
   };
 
-  services.earlyoom = {
-    enable = mkDefault true;
-    enableNotifications = true;
-  };
-
-  # Coredumps son un riesgo de seguridad y puden usar mucho disco
-  systemd.coredump.extraConfig = ''
-    Storage=none
-    ProcessSizeMax=0
-  '';
-
   time.timeZone = "Europe/Amsterdam";
-
-  system.stateVersion = "24.05"; # DO NOT CHANGE
 }