nix: move all nixos configuration to nixosModules

export them

nix/nixosModules/named/carbon/default.nix

@@ -0,0 +1,72 @@
+{
+  imports = [
+    ./hardware-configuration.nix # generated
+
+    ./battery.nix
+    ./audio.nix
+    ./networking.nix
+    ./bluetooth.nix
+    ./display.nix
+    ./scanner.nix
+
+    ./restic.nix
+    ./fs.nix
+
+    ./packages.nix
+
+    ./gui.nix
+
+    ./db.nix # M1 BDD course
+  ];
+
+  boot.loader = {
+    systemd-boot = {
+      enable = true;
+      editor = false;
+    };
+    efi.canTouchEfiVariables = true;
+  };
+
+  # related issues
+  # https://unix.stackexchange.com/questions/20483/how-to-find-which-process-is-causing-high-cpu-usage
+  # https://unix.stackexchange.com/questions/588018/kworker-thread-kacpid-notify-kacpid-hogging-60-70-of-cpu
+  # https://askubuntu.com/questions/1275749/acpi-event-69-made-my-system-unusable
+  boot.kernelParams = [
+    # Happens after waking up
+    "acpi_mask_gpe=0x69" # very high count
+
+    # # This bricks bluetooth ?
+    # "acpi_mask_gpe=0x16"
+  ];
+
+  nix.settings.trusted-users = [
+    "root"
+    "leana"
+  ];
+
+  nix.gc = {
+    automatic = true;
+    options = "--delete-older-than 90d";
+  };
+
+  age.secrets = {
+    sshconfig = {
+      file = ../../secrets/sshconfig.age;
+      path = "/home/leana/.ssh/config";
+      mode = "644";
+      owner = "leana";
+    };
+
+    wpa_password.file = ../../secrets/wpa_password.age;
+    wireguard_priv.file = ../../secrets/wireguard_priv.age;
+    wireguard_psk.file = ../../secrets/wireguard_psk.age;
+
+    restic_backblaze_pwd.file = ../../secrets/restic_backblaze_pwd.age;
+    restic_backblaze_repo.file = ../../secrets/restic_backblaze_repo.age;
+    restic_backblaze_env.file = ../../secrets/restic_backblaze_env.age;
+  };
+
+  hardware.keyboard.zsa.enable = true;
+
+  services.fwupd.enable = true;
+}