From ce02d596510fdac470b3d89007e79a90b921da80 Mon Sep 17 00:00:00 2001
From: Henry Finucane <henry.finucane@locationlabs.com>
Date: Fri, 14 Nov 2014 16:27:20 -0800
Subject: [PATCH] If force=true, ignore python-apt's advice

This lets you downgrade packages, for instance.
---
 packaging/os/apt.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packaging/os/apt.py b/packaging/os/apt.py
index 5c557900b76..c18661d19df 100644
--- a/packaging/os/apt.py
+++ b/packaging/os/apt.py
@@ -333,7 +333,7 @@ def install_deb(m, debs, cache, force, install_recommends, dpkg_options):
         if pkg.compare_to_version_in_cache() == pkg.VERSION_SAME:
             continue
         # Check if package is installable
-        if not pkg.check():
+        if not pkg.check() and not force:
             m.fail_json(msg=pkg._failure_string)
 
         # add any missing deps to the list of deps we need