diff --git a/disko/disko-config.nix b/disko/disko-config.nix
index 0cc95280..801bc740 100644
--- a/disko/disko-config.nix
+++ b/disko/disko-config.nix
@@ -1,5 +1,7 @@
 { lib
 , name ? "chaos"
+, useConfig ? false
+, config ? ""
 , disk ? "/dev/sda1"
 , enableCeph ? true
 , enableLuks ? true
@@ -11,136 +13,149 @@ assert lib.assertMsg (enableCeph || enableZfs) "Must enable ceph or zfs!";
 assert lib.assertMsg (enableCeph -> enableLuks) "Ceph requires Luks!";
 
 {
-  disko.devices =
-    let
-      rootSize = 200;
-      zfs = {
-        size = if (!enableCeph) then "100%FREE" else "${toString rootSize}GiB";
-        content = {
-          pool = name;
-          type = "zfs";
-        };
-      };
-    in
-    {
-      disk.${disk} = {
-        device = disk;
-        type = "disk";
-        content = {
-          type = "table";
-          format = "gpt";
-          partitions = lib.optional enableZfs
-            {
-              name = "ESP";
-              start = "1MiB";
-              end = "512MiB";
-              bootable = true;
-              content = {
-                type = "filesystem";
-                format = "fat32";
-                mountpoint = "/boot";
-              };
-            } ++ [
-            {
-              name = "root";
-              start = if enableZfs then "512MiB" else "1MiB";
-              end = "100%";
-              part-type = "primary";
-              content = lib.optionalAttrs enableLuks
-                {
-                  type = "luks";
-                  name = "crypt-${name}";
-                  # TODO: add password, otherwise prompt opens
-                  keyFile = "/$PWD/keyFile";
-                  content = {
-                    type = "lvm_pv";
-                    vg = "lvm-${name}";
-                  };
-                } // lib.optionalAttrs (!enableLuks) zfs.content;
-            }
-          ];
-        };
-      };
-    } // lib.optionalAttrs enableLuks {
-      lvm_vg."lvm-${name}" = {
-        type = "lvm_vg";
-        lvs = lib.optionalAttrs enableCeph
-          {
-            # the header is 3650 byte long and substract an additional 446 byte for aligment
-            # error messages:
-            #   Volume group "lvm-chaos" has insufficient free space (51195 extents): 51200 required.
-            #   Size is not a multiple of 512. Try using 40057405440 or 40057405952.
-            ceph.size =
-              let
-                # convert GiB to bytes
-                rootSizeMiB = rootSize * 1024 * 1024 * 1024;
-                # convert back to MiB and allign to 4 MiB in the process
-                roundToMiB = "/1024/1024/4*4";
-                # substract 512 MiB for /boot and 20 MiB for luks+header+other
-                bootOther = "-512-20";
-              in
-              "$((($(lsblk /dev/sda --noheadings --nodeps --output SIZE --bytes)-${toString rootSizeMiB})${roundToMiB}${bootOther}))MiB";
-          } // lib.optionalAttrs enableZfs { inherit zfs; };
-      };
-    } // {
-      zpool."${name}" = {
-        type = "zpool";
-        mountpoint = "none";
-        mountRoot = "/mnt";
-        rootFsOptions.acltype = "posixacl";
-        options = {
-          ashift = "12";
-          autotrim = "on";
-        };
-        datasets =
-          let
-            dataset = mountpoint: {
-              options = {
-                canmount = "on";
-                compression = "zstd";
-                normalization = "formD";
-                xattr = "sa";
-                inherit mountpoint;
-              };
-              type = "zfs_fs";
-            };
-          in
-          {
-            "data" = dataset "/";
-            "data/etc" = dataset "/etc";
-            "data/home" = dataset "/home";
-            "data/var" = dataset "/var";
-            # used by services.postgresqlBackup and later by restic
-            "data/var/backup" = dataset "/var/backup";
-            "data/var/lib" = dataset "/var/lib";
-            "data/var/log" = dataset "/var/log";
-            "nixos" = {
-              options = {
-                canmount = "off";
-                mountpoint = "none";
-              };
-              type = "zfs_fs";
-            };
-            "nixos/nix" = dataset "/nix";
-            "nixos/nix/store" = {
-              options = {
-                atime = "off";
-                canmount = "on";
-                mountpoint = "/nix/store";
-              };
-              type = "zfs_fs";
-            };
-            "nixos/nix/var" = dataset "/nix/var";
-            "reserved" = {
-              # zfs uses copy on write and requires some free space to delete files when the disk is completely filled
-              options = {
-                canmount = "off";
-                mountpoint = "none";
-                reservation = "5GiB";
-              };
-              type = "zfs_fs";
-            };
+  imports = [
+    ../modules/disko.nix
+  ] ++ lib.optional useConfig config;
+
+  disko = {
+    # TODO: deprecate?
+    name.default = name;
+    rootDisk.default = disk;
+    enableCeph.default = enableCeph;
+    enableLuks.default = enableLuks;
+    enableZfs.default = enableZfs;
+
+    devices =
+      let
+        rootSize = 200;
+        zfs = {
+          size = if (!enableCeph) then "100%FREE" else "${toString rootSize}GiB";
+          content = {
+            pool = name;
+            type = "zfs";
           };
+        };
+      in
+      {
+        disk.${disk} = {
+          device = disk;
+          type = "disk";
+          content = {
+            type = "table";
+            format = "gpt";
+            partitions = lib.optional enableZfs
+              {
+                name = "ESP";
+                start = "1MiB";
+                end = "512MiB";
+                bootable = true;
+                content = {
+                  type = "filesystem";
+                  format = "vfat";
+                  mountpoint = "/boot";
+                };
+              } ++ [
+              {
+                name = "root";
+                start = if enableZfs then "512MiB" else "1MiB";
+                end = "100%";
+                part-type = "primary";
+                content = lib.optionalAttrs enableLuks
+                  {
+                    type = "luks";
+                    name = "crypt-${name}";
+                    # TODO: add password, otherwise prompt opens
+                    keyFile = "/$PWD/keyFile";
+                    content = {
+                      type = "lvm_pv";
+                      vg = "lvm-${name}";
+                    };
+                  } // lib.optionalAttrs (!enableLuks) zfs.content;
+              }
+            ];
+          };
+        };
+      } // lib.optionalAttrs enableLuks {
+        lvm_vg."lvm-${name}" = {
+          type = "lvm_vg";
+          lvs = lib.optionalAttrs enableCeph
+            {
+              # the header is 3650 byte long and substract an additional 446 byte for aligment
+              # error messages:
+              #   Volume group "lvm-chaos" has insufficient free space (51195 extents): 51200 required.
+              #   Size is not a multiple of 512. Try using 40057405440 or 40057405952.
+              ceph.size =
+                let
+                  # convert GiB to bytes
+                  rootSizeMiB = rootSize * 1024 * 1024 * 1024;
+                  # convert back to MiB and allign to 4 MiB in the process
+                  roundToMiB = "/1024/1024/4*4";
+                  # substract 512 MiB for /boot and 20 MiB for luks+header+other
+                  bootOther = "-512-20";
+                in
+                "$((($(lsblk /dev/sda --noheadings --nodeps --output SIZE --bytes)-${toString rootSizeMiB})${roundToMiB}${bootOther}))MiB";
+            } // lib.optionalAttrs enableZfs { inherit zfs; };
+        };
+      } // {
+        zpool."${name}" = {
+          type = "zpool";
+          mountpoint = null;
+          mountRoot = "/mnt";
+          rootFsOptions.acltype = "posixacl";
+          options = {
+            ashift = "12";
+            autotrim = "on";
+          };
+          datasets =
+            let
+              dataset = mountpoint: {
+                options = {
+                  canmount = "on";
+                  compression = "zstd";
+                  normalization = "formD";
+                  xattr = "sa";
+                  inherit mountpoint;
+                };
+                type = "zfs_fs";
+              };
+            in
+            {
+              "data" = dataset "/";
+              "data/etc" = dataset "/etc";
+              "data/home" = dataset "/home";
+              "data/var" = dataset "/var";
+              # used by services.postgresqlBackup and later by restic
+              "data/var/backup" = dataset "/var/backup";
+              "data/var/lib" = dataset "/var/lib";
+              "data/var/log" = dataset "/var/log";
+              "nixos" = {
+                options = {
+                  canmount = "off";
+                  mountpoint = "none";
+                };
+                type = "zfs_fs";
+              };
+              "nixos/nix" = dataset "/nix";
+              "nixos/nix/store" = {
+                options = {
+                  atime = "off";
+                  canmount = "on";
+                  mountpoint = "/nix/store";
+                };
+                type = "zfs_fs";
+              };
+              "nixos/nix/var" = dataset "/nix/var";
+              "reserved" = {
+                # zfs uses copy on write and requires some free space to delete files when the disk is completely filled
+                options = {
+                  canmount = "off";
+                  mountpoint = "none";
+                  reservation = "5GiB";
+                };
+                type = "zfs_fs";
+              };
+            };
+        };
       };
-    };
+  };
 }
diff --git a/disko/format-disk.sh b/disko/format-disk.sh
index 6d1a2482..a5e952fa 100755
--- a/disko/format-disk.sh
+++ b/disko/format-disk.sh
@@ -1,22 +1,35 @@
 #!/usr/bin/env bash
+useConfig=false config="" ceph=true luks=true zfs=true
 
-ceph=true luks=true zfs=true
+cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null || exit 1
 
 while [[ $# -gt 0 ]]; do
   case "$1" in
     "-h" | "--help")
       echo "Usage:"
-      echo "$0 [-h|--help] --disk /dev/sdx --name chaos [--no-ceph] [--no-luks] [--no-zfs]"
+      echo "$0 [-h|--help] --name chaos [--config [hosts/\$name/default.nix]] [--disk /dev/sdx] [--no-ceph] [--no-luks] [--no-zfs]"
+      echo
+      echo "If only --config is supplied, the script tries to guess the nix file to import from --name."
+      echo "Note: --config is none working"
       exit 0
       ;;
-    "--disk")
-      disk=$2
-      shift
-      ;;
     "--name")
       name=$2
       shift
       ;;
+    "--config")
+      useConfig=true
+      if [[ $2 =~ ^-- ]]; then
+        config=$2
+        shift
+      else
+        config=../hosts/$name/default.nix
+      fi
+      shift
+      ;;
+    "--disk")
+      disk=$2
+      ;;
     "--no-ceph") ceph=false;;
     "--no-luks") luks=false;;
     "--no-zfs")  zfs=false ;;
@@ -28,12 +41,13 @@ while [[ $# -gt 0 ]]; do
   shift
 done
 
-if [[ -z ${disk:-} || -z ${name:-} ]]; then
-  echo "--disk and --name must be supplied!"
+if [[ -z ${name:-} || (-n ${config:-} && -n ${disk:-}) ]]; then
+  # echo "--name and either config or disk must be supplied!"
+  echo "--name and disk must be supplied!"
   exit 1
 fi
 
 # TODO: wait for https://github.com/nix-community/disko/pull/211 to be merged
 sudo nix run github:SuperSandro2000/disko/zpool-R -- --mode zap_create_mount ./disko-config.nix --debug \
-  --arg disk '"'"$disk"'"' --arg name '"'"$name"'"' \
+  --arg disk '"'"$disk"'"' --arg name '"'"$name"'"' --arg useConfig "$useConfig" --arg config "$config" \
   --arg enableCeph "$ceph" --arg enableLuks "$luks" --arg enableZfs "$zfs"
diff --git a/modules/disko.nix b/modules/disko.nix
new file mode 100644
index 00000000..e621fdde
--- /dev/null
+++ b/modules/disko.nix
@@ -0,0 +1,37 @@
+{ lib, ... }:
+
+# none functional until https://github.com/nix-community/disko/issues/219 is resolved
+
+{
+  options.disko = {
+    name = lib.mkOption {
+      type = lib.types.str;
+      example = "chaos";
+      description = "Machine name used in eg zpool name.";
+    };
+
+    rootDisk = lib.mkOption {
+      type = lib.types.str;
+      example = "/dev/sda";
+      description = "Path of the root disk.";
+    };
+
+    enableCeph = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Wether to include a ceph on the root disk.";
+    };
+
+    enableLuks = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Wether to encrypt the root disk.";
+    };
+
+    enableZfs = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Wether to include a zfs on the root disk.";
+    };
+  };
+}