fixed version-handling

src/ansible-webui/aw/config/main.py

@@ -1,12 +1,25 @@
 from os import environ
-from importlib.metadata import version
+from importlib.metadata import version, PackageNotFoundError
+from sys import stderr
 
 from pytz import all_timezones
 
 from aw.config.environment import ENVIRON_FALLBACK
 
 
-VERSION = environ['AW_VERSION'] if 'AW_VERSION' in environ else version('ansible-webui')
+def get_version() -> str:
+    if 'AW_VERSION' in environ:
+        return environ['AW_VERSION']
+
+    try:
+        return version('ansible-webui')
+
+    except PackageNotFoundError:
+        stderr.write('\x1b[1;33mWARNING: Module version could not be determined!\x1b[0m\n')
+        return '0.0.0'
+
+
+VERSION = get_version()
 
 
 def init_globals():