Bug 453069 - Incremental backups are broken with python 2.3
Incremental backups are broken with python 2.3
Product: Fedora EPEL
Classification: Fedora
Component: duplicity (Show other bugs)
All Linux
low Severity low
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Assigned To: Robert Scheck
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-06-26 22:47 EDT by Nathan G. Grennan
Modified: 2008-06-28 05:21 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2008-06-28 05:21:25 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch to fix python 2.3 incompatibility (705 bytes, text/plain)
2008-06-26 23:14 EDT, Nathan G. Grennan
no flags Details

  None (edit)
Description Nathan G. Grennan 2008-06-26 22:47:39 EDT
Description of problem:
Duplicity claims compatibility with python 2.3, but then uses a function in a
way that only works in python 2.4. This breaks incremental backups.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Install duplicity on a system with python 2.3, like CentOS 4
2. Run /usr/bin/duplicity incremental / scp://user@host//path
Actual results:
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 463, in ?
  File "/usr/bin/duplicity", line 458, in with_tempdir
  File "/usr/bin/duplicity", line 393, in main
    last_full_time = col_stats.get_last_full_backup_time()
  File "/usr/lib/python2.3/site-packages/duplicity/collections.py", line 769, in
    return self.get_nth_last_full_backup_time(1)
  File "/usr/lib/python2.3/site-packages/duplicity/collections.py", line 774, in
    chain = self.get_nth_last_backup_chain(n)
  File "/usr/lib/python2.3/site-packages/duplicity/collections.py", line 800, in
    key = lambda chain: chain.get_first().time)
TypeError: sort() takes no keyword arguments

Expected results:

Additional info:
The url below includes a patch that is supposed to fix this issue.

Comment 1 Nathan G. Grennan 2008-06-26 23:14:22 EDT
Created attachment 310408 [details]
Patch to fix python 2.3 incompatibility

I had trouble applying the patch from the mailing list. So I pulled it down
from cvs, and compared collections.py files. This patch is the result.
Comment 2 Nathan G. Grennan 2008-06-26 23:20:15 EDT
I added the patch to the 0.4.11-1 src.rpm, and compiled it. I think tested it in
the same case above where it broke, and it works.
Comment 3 Robert Scheck 2008-06-27 07:24:27 EDT
Thanks for pointing that out, I'll include the patch now.
Comment 4 Robert Scheck 2008-06-28 05:21:25 EDT
39427 (duplicity): Build on target fedora-4-epel succeeded. Build logs may be 
found at http://buildsys.fedoraproject.org/logs/fedora-4-epel/39427-duplicity-

As long the package is not in EPEL 4 testing repository, you can grab it from
the URL above. It should reach EPEL 4 testing at least on Monday.

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