apt: Fix preferences origin

With the switch to apt-ftparchive, we need to switch our origin to
\""\ which is the origin to use for a local packages repo.

Follow up for cdd2d1570e256ef0aa122c079e55f093cc0df453

diff --git a/mkosi/installer/apt.py b/mkosi/installer/apt.py
index 6c518e23e52be8c46b48a27a329a7d27b4f39bbc..76f747b905a2941b0a84b3f3d19c0497f7e0f0e7 100644 (file)
--- a/mkosi/installer/apt.py
+++ b/mkosi/installer/apt.py
@@ -318,7 +318,7 @@ class Apt(PackageManager):
             textwrap.dedent(
                 """\
                 Package: *
-                Pin: origin mkosi
+                Pin: origin ""
                 Pin-Priority: 1100
                 """
             )