Issues with Network Management and user management in menu (#1036)

* A problem with default values treatment at superusers (and users) on the main menu

* Solving issues when changing the selection of nic, ask_to_configure_network failed in several places.
Solved, temporarily with the creation of __getitem__ and get methods at NetworkManager

* Accept old style definitions for nic

* flake8 complains

* log string corrected (issue 1039)

* Correct exit when no disk is selected and we don't wish to continue

2 files changed, 12 insertions, 8 deletions

diff --git a/examples/guided.py b/examples/guided.py
index 37f4cf72..a677baa9 100644
--- a/examples/guided.py
+++ b/examples/guided.py
@@ -185,11 +185,13 @@ def perform_installation(mountpoint):
 			if archinstall.arguments.get('profile', None):
 				installation.install_profile(archinstall.arguments.get('profile', None))
 
-			for user, user_info in archinstall.arguments.get('!users', {}).items():
-				installation.user_create(user, user_info["!password"], sudo=False)
+			if archinstall.arguments.get('!users',{}):
+				for user, user_info in archinstall.arguments.get('!users', {}).items():
+					installation.user_create(user, user_info["!password"], sudo=False)
 
-			for superuser, user_info in archinstall.arguments.get('!superusers', {}).items():
-				installation.user_create(superuser, user_info["!password"], sudo=True)
+			if archinstall.arguments.get('!superusers',{}):
+				for superuser, user_info in archinstall.arguments.get('!superusers', {}).items():
+					installation.user_create(superuser, user_info["!password"], sudo=True)
 
 			if timezone := archinstall.arguments.get('timezone', None):
 				installation.set_timezone(timezone)
diff --git a/examples/swiss.py b/examples/swiss.py
index cf864ed5..6f524103 100644
--- a/examples/swiss.py
+++ b/examples/swiss.py
@@ -415,11 +415,13 @@ def os_setup(installation):
 		if archinstall.arguments.get('profile', None):
 			installation.install_profile(archinstall.arguments.get('profile', None))
 
-		for user, user_info in archinstall.arguments.get('!users', {}).items():
-			installation.user_create(user, user_info["!password"], sudo=False)
+		if archinstall.arguments.get('!users',{}):
+			for user, user_info in archinstall.arguments.get('!users', {}).items():
+				installation.user_create(user, user_info["!password"], sudo=False)
 
-		for superuser, user_info in archinstall.arguments.get('!superusers', {}).items():
-			installation.user_create(superuser, user_info["!password"], sudo=True)
+		if archinstall.arguments.get('!superusers',{}):
+			for superuser, user_info in archinstall.arguments.get('!superusers', {}).items():
+				installation.user_create(superuser, user_info["!password"], sudo=True)
 
 		if timezone := archinstall.arguments.get('timezone', None):
 			installation.set_timezone(timezone)