Fix for unsupported negative value in pin priorities.

 The priorities of repositories can be negative as reported in apt_preferences
 manpage "P < 0 prevents the version from being installed". The lsb_release.py
 script matches only positive values generating an invalid output for negative
 priorities.

Closes: #540208

diff --git a/lsb_release.py b/lsb_release.py
index 92088584734702f102197da2fc63bf6b50770125..d65e9337088463eacd6b33e34b723440e3a7fa7f 100644 (file)
--- a/lsb_release.py
+++ b/lsb_release.py
@@ -154,7 +154,7 @@ def parse_apt_policy():
     policy = commands.getoutput('LANG=C apt-cache policy 2>/dev/null')
     for line in policy.split('\n'):
         line = line.strip()
-        m = re.match(r'(\d+)', line)
+        m = re.match(r'(-?\d+)', line)
         if m:
             priority = int(m.group(1))
         if line.startswith('release'):