[zfshostid] adding new module

module created to copy zfs generated /etc/hostid, needed to have
hostid in zpool & initramfs in sync

settings.conf

@@ -140,6 +140,7 @@ sequence:
 #  - luksopenswaphookcfg
 #  - dracutlukscfg
 #  - plymouthcfg
+#  - zfshostid
   - initcpiocfg
   - initcpio
   - users

src/modules/zfshostid/main.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# === This file is part of Calamares - <https://calamares.io> ===
+#
+#   SPDX-FileCopyrightText: 2022 Anke Boersma <demm@kaosx.us>
+#   SPDX-License-Identifier: GPL-3.0-or-later
+#
+#   Calamares is Free Software: see the License-Identifier above.
+#
+
+import os
+import shutil
+
+import libcalamares
+from libcalamares.utils import gettext_path, gettext_languages
+
+
+import gettext
+_ = gettext.translation("calamares-python",
+                        localedir=libcalamares.utils.gettext_path(),
+                        languages=libcalamares.utils.gettext_languages(),
+                        fallback=True).gettext
+
+
+def pretty_name():
+    return _("Copying zfs generated hostid.")
+
+
+def run():
+
+    zfs = libcalamares.globalstorage.value("zfsDatasets")
+    root_mount_point = libcalamares.globalstorage.value("rootMountPoint")
+
+    if zfs:
+        hostid_source = '/etc/hostid'
+        hostid_destination = '{!s}/etc/hostid'.format(root_mount_point)
+
+        if os.path.exists(hostid_source):
+            try:
+                shutil.copy2(hostid_source, hostid_destination)
+            except Exception as e:
+                libcalamares.utils.warning("Could not copy hostid")
+
+    return None

src/modules/zfshostid/module.desc

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: no
+# SPDX-License-Identifier: CC0-1.0
+---
+type:       "job"
+name:       "zfshostid"
+interface:  "python"
+script:     "main.py"
+noconfig:   true

src/modules/zfshostid/zfshostid.schema.yaml

@@ -0,0 +1,10 @@
+# SPDX-FileCopyrightText: 2022 Anke Boersma <demm@kaosx.us>
+# SPDX-License-Identifier: GPL-3.0-or-later
+---
+$schema: https://json-schema.org/schema#
+$id: https://calamares.io/schemas/zfshostid
+additionalProperties: false
+type: object
+
+required:
+    - zfs