[PATCH 3/4] wic: biosplusefi: make sure sub-plugins can import isarpluginbase

[Felix Moessbauer <felix.moessbauer@siemens.com>]

From: Henning Schild <henning.schild@siemens.com>

The plugin calls other plugins, which in our case use isarpluginbase.
Make sure that will be in the path so that it can be imported.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py    | 6 ++++--
 meta/scripts/lib/wic/plugins/source/bootimg-pcbios-isar.py | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
index d9712548..5ba0777a 100644
--- a/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
+++ b/meta/scripts/lib/wic/plugins/source/bootimg-efi-isar.py
@@ -23,8 +23,10 @@ from wic.pluginbase import SourcePlugin
 from wic.misc import (exec_cmd, exec_native_cmd,
                       get_bitbake_var, BOOTDD_EXTRA_SPACE)
 
-import sys
-sys.path[0] = os.path.dirname(os.path.abspath(__file__)) + "/.."
+# allow plugins to import from isarpluginbase
+if '__file__' in globals():
+    import sys
+    sys.path.append(os.path.dirname(os.path.abspath(__file__)) + "/..")
 from isarpluginbase import (isar_get_filenames, isar_populate_boot_cmd)
 
 logger = logging.getLogger('wic')
diff --git a/meta/scripts/lib/wic/plugins/source/bootimg-pcbios-isar.py b/meta/scripts/lib/wic/plugins/source/bootimg-pcbios-isar.py
index f493890f..9136d4f2 100644
--- a/meta/scripts/lib/wic/plugins/source/bootimg-pcbios-isar.py
+++ b/meta/scripts/lib/wic/plugins/source/bootimg-pcbios-isar.py
@@ -20,8 +20,10 @@ from wic.pluginbase import SourcePlugin
 from wic.misc import (exec_cmd, exec_native_cmd,
                       get_bitbake_var, BOOTDD_EXTRA_SPACE)
 
-import sys
-sys.path[0] = os.path.dirname(os.path.abspath(__file__)) + "/.."
+# allow plugins to import from isarpluginbase
+if '__file__' in globals():
+    import sys
+    sys.path.append(os.path.dirname(os.path.abspath(__file__)) + "/..")
 from isarpluginbase import (isar_get_filenames, isar_populate_boot_cmd)
 
 logger = logging.getLogger('wic')
-- 
2.30.2