refactor: move 'disko' modules into 'modules/disko'

modules/disko/zfs-encrypted-root.nix

@@ -0,0 +1,90 @@
+{ lib, config, ... }:
+
+{
+  options.device = lib.mkOption {
+    type = lib.types.str;
+    example = "/dev/nvme0n1";
+  };
+
+  config = {
+    disko.devices = {
+      disk = {
+        root = {
+          type = "disk";
+          device = config.device;
+          content = {
+            type = "gpt";
+            partitions = {
+              ESP = {
+                size = "1G";
+                type = "EF00";
+                content = {
+                  type = "filesystem";
+                  format = "vfat";
+                  mountpoint = "/boot";
+                  mountOptions = [ "nofail" ];
+                };
+              };
+              zfs = {
+                size = "100%";
+                content = {
+                  type = "zfs";
+                  pool = "zroot";
+                };
+              };
+            };
+          };
+        };
+      };
+      zpool = {
+        zroot = {
+          type = "zpool";
+          rootFsOptions = {
+            mountpoint = "none";
+            compression = "zstd";
+            acltype = "posixacl";
+            xattr = "sa";
+            "com.sun:auto-snapshot" = "true";
+          };
+          options.ashift = "12";
+          datasets = {
+            "root" = {
+              type = "zfs_fs";
+              options = {
+                encryption = "aes-256-gcm";
+                keyformat = "passphrase";
+                #keylocation = "file:///tmp/secret.key";
+                keylocation = "prompt";
+              };
+              mountpoint = "/";
+
+            };
+            "root/nix" = {
+              type = "zfs_fs";
+              options.mountpoint = "/nix";
+              mountpoint = "/nix";
+            };
+
+            # # README MORE: https://wiki.archlinux.org/title/ZFS#Swap_volume
+            # "root/swap" = {
+            #   type = "zfs_volume";
+            #   size = "10M";
+            #   content = {
+            #     type = "swap";
+            #   };
+            #   options = {
+            #     volblocksize = "4096";
+            #     compression = "zle";
+            #     logbias = "throughput";
+            #     sync = "always";
+            #     primarycache = "metadata";
+            #     secondarycache = "none";
+            #     "com.sun:auto-snapshot" = "false";
+            #   };
+            # };
+          };
+        };
+      };
+    };
+  };
+}