apt: Install apt sources if apt was installed via base tree

Fixes #3715.

diff --git a/mkosi/distributions/debian.py b/mkosi/distributions/debian.py
index 1a588d409c03166f51580c0d66ef582a3cbf569f..4ceec90da8802827620b73637489e5cdc0edafc6 100644 (file)
--- a/mkosi/distributions/debian.py
+++ b/mkosi/distributions/debian.py
@@ -189,7 +189,10 @@ class Installer(DistributionInstaller):
 
         fixup_os_release(context)
 
-        if "apt" in itertools.chain(context.config.packages, context.config.volatile_packages):
+        if (
+            "apt" in itertools.chain(context.config.packages, context.config.volatile_packages)
+            or (context.root / "usr/bin/apt").exists()
+        ):
             install_apt_sources(context, cls.repositories(context, local=False))
 
     @classmethod