curious: yum-presto prevents from updating in F17 by yum?

[mwesten]

On 03/29/2012 12:21 PM, Joachim Backes wrote:
> Hi,
>
> somebody has seen this too: "yum update" fails:
>
> ----------------------- snip -----------------------------------------
> Traceback (most recent call last):
>    File "/bin/yum", line 29, in<module>
>      yummain.user_main(sys.argv[1:], exit_code=True)
>    File "/usr/share/yum-cli/yummain.py", line 321, in user_main
>      errcode = main(args)
>    File "/usr/share/yum-cli/yummain.py", line 229, in main
>      return_code = base.doTransaction()
>    File "/usr/share/yum-cli/cli.py", line 547, in doTransaction
>      problems = self.downloadPkgs(downloadpkgs,
> callback_total=self.download_callback_total_cb)
>    File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 2147, in
> downloadPkgs
>      self.plugins.run('predownload', pkglist=pkglist)
>    File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 187, in run
>      func(conduitcls(self, self.base, conf, **kwargs))
>    File "/usr/lib/yum-plugins/presto.py", line 633, in predownload_hook
>      (problems, more) = downloadPkgs(conduit, pinfo, download_pkgs)
>    File "/usr/lib/yum-plugins/presto.py", line 321, in downloadPkgs
>      delta = getDelta(po, presto, conduit, conf_mp)
>    File "/usr/lib/yum-plugins/presto.py", line 198, in getDelta
>      conduit.info(5, -("Could not find delta rpm for package %s.%s.")
> TypeError: bad operand type for unary -: 'str'
>
>
> ----------------------- snip -----------------------------------------
>
> /Workaround: UNinstalling yum-presto helps/
>
>
I got that too.  Worked OK with --disablepresto.

-Mike