From 70da3b041dcb31e783c381d002fdee8bba9ec292 Mon Sep 17 00:00:00 2001
From: Kiwinote <kiwinote@gmail.com>
Date: Mon, 28 Jun 2010 09:22:23 +0100
Subject: Don't query cache[].candidate.version when no cache[].candidate is
 available

---
 apt/debfile.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apt/debfile.py b/apt/debfile.py
index 469cbb36..f74b6981 100644
--- a/apt/debfile.py
+++ b/apt/debfile.py
@@ -347,8 +347,10 @@ class DebPackage(object):
         if pkgname in self._cache:
             if use_installed and self._cache[pkgname].installed:
                 cachever = self._cache[pkgname].installed.version
-            else:
+            elif self._cache[pkgname].candidate:
                 cachever = self._cache[pkgname].candidate.version
+            else:
+                return self.VERSION_NONE
             if cachever is not None:
                 cmp = apt_pkg.version_compare(cachever, debver)
                 self._dbg(1, "CompareVersion(debver,instver): %s" % cmp)
-- 
cgit v1.2.3