[dracut] add option to make the kernel name configurable

src/modules/dracut/dracut.conf

+# SPDX-FileCopyrightText: no
+# SPDX-License-Identifier: CC0-1.0
+#
+# Run dracut(8) with an optional kernel name
+---
+# Dracut defaults to setting initramfs-<kernel-version>.img
+# If you want to specify another filename for the resulting image,
+# set a custom kernel name, including the path
+#
+# kernelName: /boot/initramfs-linux.img

src/modules/dracut/main.py

@@ -7,13 +7,14 @@
 #   SPDX-FileCopyrightText: 2014 Teo Mrnjavac <teo@kde.org>
 #   SPDX-FileCopyrightText: 2017 Alf Gaida <agaid@siduction.org>
 #   SPDX-FileCopyrightText: 2019 Adriaan de Groot <groot@kde.org>
+#   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 libcalamares
-from libcalamares.utils import target_env_call
+from libcalamares.utils import check_target_env_call
 
 
 import gettext
@@ -33,7 +34,12 @@ def run_dracut():
 
     :return:
     """
-    return target_env_call(['dracut', '-f'])
+    kernelName = libcalamares.job.configuration['kernelName']
+
+    if kernelName != 0:
+        return check_target_env_call(['dracut', '-f', '{}'.format(kernelName)])
+    else:
+        return check_target_env_call(['dracut', '-f'])
 
 
 def run():