Add some friendlier help for the import command when missing vobject

ChangeLog

@@ -1,6 +1,7 @@
 v4.4.0
   * Fix lots of bugs by switching from deprecated oauth2client to
     google_auth_oauthlib
+  * Friendlier help output when `import` command is missing vobject extra
   * Handle encoding/decoding errors more gracefully by replacing with
     placeholder chars instead of blowing up
   * Fix `--lineart` option failing with unicode errors

gcalcli/gcal.py

@@ -1423,6 +1423,17 @@ def ImportICS(self, verbose=False, dump=False, reminders=None,
             self.printer.err_msg(
                 'Python vobject module not installed!\n'
             )
+            self.printer.msg(
+                'To use the import command, you need to first install the '
+                '"vobject" extra.\n'
+                'For setup instructions, see '
+                "https://github.com/insanum/gcalcli and documentation for the "
+                'gcalcli package on your platform.\n')
+            sys_path_str = '\n  '.join(sys.path)
+            self.printer.debug_msg(
+                'Searched for vobject using python interpreter at '
+                f'"{sys.executable}" with module search path:\n'
+                f"  {sys_path_str}\n")
             sys.exit(1)
 
         if dump:

gcalcli/ics.py

@@ -1,14 +1,13 @@
 """Helpers for working with iCal/ics format."""
 
-from datetime import datetime
 import importlib.util
 import io
+from datetime import datetime
 from typing import Any, Dict, Iterable, Optional
 
 from gcalcli.printer import Printer
 from gcalcli.utils import localize_datetime
 
-
 EventBody = Dict[str, Any]
 
 

pyproject.toml

@@ -32,7 +32,6 @@ dependencies = [
   "google_auth_oauthlib",
   "parsedatetime",
   "argcomplete",
-  "google-api-python-client-stubs",
 ]
 
 [project.urls]

stubs/vobject/__init__.pyi

@@ -1,3 +1,5 @@
+# Fork of Typeshed's stubs to work around explicit export issue
+# https://github.com/py-vobject/vobject/issues/53.
 from .base import Component, readComponents as readComponents
 
 def iCalendar() -> Component: ...