cyclone: Migrate to Linux subdirectory

hosts/linux/cyclone/hardware-configuration.nix

@@ -0,0 +1,80 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot = {
+    # We'll use systemd-boot.
+    loader = {
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+    };
+
+    initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
+    # Use the latest kernel.
+    # As such, we'll also use unstable ZFS.
+    kernelPackages = pkgs.linuxPackages_6_10;
+    zfs = {
+      package = pkgs.zfs_unstable;
+      # For reasons unbeknownst to humanity, this drive
+      # appears to keep changing identifiers or similar.
+      # Prefer by-partuuid instead.
+      #
+      # (We could also do by-uuid, but it'd be best not
+      # to have a drive's serial number publicly.)
+      devNodes = "/dev/disk/by-uuid";
+    };
+
+    kernelModules = [ "kvm-amd" ];
+  };
+
+  # Configured ZFS datasets.
+  fileSystems = {
+    "/" = {
+      device = "rpool/ROOT/nixos";
+      fsType = "zfs";
+    };
+
+    "/home" = {
+      device = "rpool/home";
+      fsType = "zfs";
+    };
+
+    "/home/spotlight" = {
+      device = "rpool/home/spotlight";
+      fsType = "zfs";
+    };
+
+    "/root" = {
+      device = "rpool/root";
+      fsType = "zfs";
+    };
+
+    "/var/lib" = {
+      device = "rpool/var/lib";
+      fsType = "zfs";
+    };
+
+    "/var/log" = {
+      device = "rpool/var/log";
+      fsType = "zfs";
+    };
+
+    "/nix" = {
+      device = "rpool/nix";
+      fsType = "zfs";
+    };
+
+    "/boot" = {
+      device = "/dev/disk/by-uuid/6073-ACA7";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+  };
+
+  # ZFS is not a fan of swap.
+  swapDevices = [ ];
+}