lavaridge: added disko config

hosts/lavaridge/disko.nix

@@ -0,0 +1,56 @@
+{
+  disko.devices = {
+    disk = {
+      vdb = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              start = "1M";
+              end = "1024M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" ]; # Override existing partition
+                # Subvolumes must set a mountpoint in order to be mounted,
+                # unless their parent is mounted
+                subvolumes = {
+                  # Subvolume name is different from mountpoint
+                  "rootfs" = { mountpoint = "/"; };
+                  # For use with future impermanence setups
+                  "persist" = {
+                    mountpoint = "/persist";
+                    mountOptions = [ "compress=zstd" "noatime" ];
+                  };
+                  # Subvolume name is the same as the mountpoint
+                  "home" = {
+                    mountOptions = [ "compress=zstd" ];
+                    mountpoint = "/home";
+                  };
+                  # Parent is not mounted so the mountpoint must be set
+                  "nix" = {
+                    mountOptions = [ "compress=zstd" "noatime" ];
+                    mountpoint = "/nix";
+                  };
+                };
+                mountpoint = "/partition-root";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}