feat: add disko

hosts/calypso/disko.nix

@@ -0,0 +1,57 @@
+{
+  disko.devices = {
+    disk = {
+      nvme0n1 = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [
+                  "defaults"
+                ];
+              };
+            };
+            luks = {
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "crypted";
+                # disable settings.keyFile if you want to use interactive password entry
+                #passwordFile = "/tmp/secret.key"; # Interactive
+                settings = {
+                  allowDiscards = true;
+                };
+                content = {
+                  type = "btrfs";
+                  extraArgs = ["-f"];
+                  subvolumes = {
+                    "/@persist" = {
+                      mountpoint = "/persist";
+                      mountOptions = ["compress=zstd" "noatime"];
+                    };
+                    "/@nix" = {
+                      mountpoint = "/nix";
+                      mountOptions = ["compress=zstd" "noatime"];
+                    };
+                    "/@swap" = {
+                      mountpoint = "/.swapvol";
+                      swap.swapfile.size = "20M";
+                    };
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}