config: init: set aports when non-default work dir is picked (MR 2366)

If you init and set a custom work dir it will not be relative to
pmaports anymore. Detect this and reset config.aports to be relative to
the new workdir.

Fixes #2406

Signed-off-by: Caleb Connolly <caleb@postmarketos.org>

pmb/config/init.py

@@ -672,8 +672,16 @@ def frontend(args: PmbArgs):
 
     # Work folder (needs to be first, so we can create chroots early)
     config = pmb.config.load(args.config)
+    # Update context to point to new config
+    get_context().config = config
+
     config.work, work_exists = ask_for_work_path(args)
 
+    # If the work dir is not the default, reset aports and make
+    # it relative to the work dir
+    if not config.aports[0].is_relative_to(config.work):
+        config.aports = [config.work / "cache_git/pmaports"]
+
     # Update args and save config (so chroots and 'pmbootstrap log' work)
     # pmb.helpers.args.update_work(args, config.work)
     pmb.config.save(args.config, config)