hosts/plover: add disko device config

hosts/plover/default.nix

@@ -42,6 +42,11 @@ in
     ./modules/services/wireguard.nix
   ];
 
+  # Automatic format and partitioning.
+  disko.devices = import ./disko.nix {
+    disks = [ "/dev/sda" ];
+  };
+
   networking = {
     nftables.enable = true;
     domain = "foodogsquared.one";

hosts/plover/disko.nix

@@ -0,0 +1,47 @@
+{ disks ? [ "/dev/sda" ], ... }:
+
+{
+  disk.sda = {
+    device = builtins.elemAt disks 0;
+    type = "disk";
+    content = {
+      format = "gpt";
+      type = "table";
+      partitions = [
+        {
+          name = "boot";
+          start = "0";
+          end = "1MiB";
+          part-type = "primary";
+          flags = [ "bios_grub" ];
+        }
+
+        {
+          name = "ESP";
+          start = "1MiB";
+          end = "256MiB";
+          bootable = true;
+          content = {
+            type = "filesystem";
+            format = "vfat";
+            mountpoint = "/boot";
+          };
+          flags = [ "esp" ];
+        }
+
+        {
+          name = "root";
+          start = "256MiB";
+          end = "100%";
+          part-type = "primary";
+          bootable = true;
+          content = {
+            type = "filesystem";
+            format = "ext4";
+            mountpoint = "/";
+          };
+        }
+      ];
+    };
+  };
+}

hosts/plover/modules/hardware/hetzner-cloud-cx21.nix

@@ -18,22 +18,16 @@ in
 
   # Hetzner can only support non-UEFI bootloader (or at least it doesn't with
   # systemd-boot).
-  boot.loader.grub.enable = lib.mkForce true;
-  boot.loader.grub.device = "/dev/sda";
+  boot.loader.grub = {
+    enable = lib.mkForce true;
+    device = "/dev/sda";
+    efiSupport = true;
+    efiInstallAsRemovable = true;
+  };
+
   boot.initrd.availableKernelModules = [ "ata_piix" "virtio_pci" "virtio_scsi" "xhci_pci" "sd_mod" "sr_mod" ];
   boot.initrd.kernelModules = [ "nvme" ];
 
-  fileSystems."/" = {
-    label = "nixos";
-    fsType = "ext4";
-    options = [ "defaults" ];
-  };
-
-  fileSystems."/boot" = {
-    label = "boot";
-    fsType = "vfat";
-  };
-
   zramSwap.enable = true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";