Add initial config

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/eirene/disko.nix

@@ -0,0 +1,63 @@
+{
+  disko.devices = {
+    disk.main = {
+      type = "disk";
+      content = {
+        type = "gpt";
+        partitions = {
+          boot = {
+            name = "boot";
+            size = "1M";
+            type = "EF02";
+          };
+          esp = {
+            name = "esp";
+            size = "512M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+            };
+          };
+          swap = {
+            name = "swap";
+            size = "32G";
+            content = {
+              type = "swap";
+              resumeDevice = true;
+            };
+          };
+          root = {
+            name = "root";
+            size = "100%";
+            content = {
+              name = "luks";
+              type = "luks";
+              settings = {
+                allowDiscards = true;
+              };
+              content = {
+                type = "btrfs";
+                extraArgs = ["-f"];
+                subvolumes = {
+                  "/root" = {
+                    mountpoint = "/";
+                  };
+                  "/persist" = {
+                    mountpoint = "/persist";
+                    mountOptions = ["subvol=persist" "compress=zstd" "noatime"];
+                  };
+                  "/nix" = {
+                    mountpoint = "/nix";
+                    mountOptions = ["subvol=nix" "compress=zstd" "noatime"];
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}