config: prompt_profile(): handle uninitialised PKGBUILDs gracefully and warn user

config/__init__.py

@@ -1,5 +1,7 @@
 import click
 import logging
+import os
+
 from copy import deepcopy
 from typing import Any, Iterable, Optional, Union
 
@@ -89,6 +91,15 @@ def prompt_profile(
         raise Exception(f'Unknown profile "{name}"')
     logging.info(f'Configuring profile "{name}"')
     changed = False
+    if not (no_parse or os.path.exists(os.path.join(config.get_path('pkgbuilds'), 'device'))):
+        logging.warning("PKGBUILDS NOT INITIALISED:\n"
+                        "Usually we'd present you with detailed lists of choices for devices and flavours in this dialogue,\n"
+                        "but your pkgbuilds.git seem to not have been cloned yet.\n\n"
+                        "You can:\n1. complete the dialogue with default values for now\n"
+                        "2. run `kupferbootstrap packages update` afterwards\n"
+                        f"3. then get back to this dialogue by running `kupferbootstrap config profile init {name}`\n\n"
+                        "You can also use `kupferbootstrap packages flavours` and `kupferbootstrap packages devices` to list them.")
+        no_parse = True
     for key, current in profile.items():
         current = profile[key]
         text = f'{name}.{key}'
@@ -99,7 +110,7 @@ def prompt_profile(
             elif key == 'flavour':
                 parse_prompt = prompt_profile_flavour
             else:
-                raise Exception(f'config: Unhanled parseable field {key}, this is a bug in kupferbootstrap.')
+                raise Exception(f'config: Unhandled parseable field {key}, this is a bug in kupferbootstrap.')
             result, _changed = parse_prompt(current, name)  # type: ignore
         else:
             result, _changed = prompt_config(text=text, default=current, field_type=type(PROFILE_DEFAULTS[key]))  # type: ignore