[Fedora-livecd-list] [PATCH] Tolerate empty transactions

[Lubomir Rintel]

It can be useful when rebuilding the image without adding or removing a
package.
---
 imgcreate/yuminst.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/imgcreate/yuminst.py b/imgcreate/yuminst.py
index 9e54982..8aac85d 100644
--- a/imgcreate/yuminst.py
+++ b/imgcreate/yuminst.py
@@ -171,6 +171,10 @@ class LiveCDYum(yum.YumBase):
             (res, resmsg) = self.buildTransaction()
         except yum.Errors.RepoError, e:
             raise CreatorError("Unable to download from repo : %s" %(e,))
+        # Empty transactions are generally fine, we might be rebuilding an
+        # existing image with no packages added
+        if resmsg.endswith(" - empty transaction"):
+            return res
         if res != 2:
             raise CreatorError("Failed to build transaction : %s" %
str.join("\n", resmsg))
         
-- 
1.7.3.2