Hi, I don't see how yum could be at fault here, the python trace dumped when starting mock shows an error in python-urlgrabber.
Besides this, as I know that Debian just finished a transition to python 2.6, so I just tried to use yum in it the following way: yum -c /tmp/chroot_centos/yum.conf -y install basesystem \ centos-release yum wget which yum-basearchonly \ nano rsyslog passwd joe screen With my yum.conf being as follow: [main] reposdir=/tmp/chroot_centos/repos.d pluginconfpath=/tmp/chroot_centos/pluginconf.d cachedir=/var/cache/yum installroot=/tmp/chroot_centos exclude=*.i386 *.i586 *.i686 keepcache=1 #debuglevel=4 #errorlevel=4 pkgpolicy=newest distroverpkg=centos-release tolerant=1 exactarch=1 obsoletes=1 gpgcheck=1 plugins=1 metadata_expire=1800 it did work as expected, and installed a CentOS chroot. So yum seems to work just fine in SID. Please prove me that yum is the problem here, otherwise reassign to mock or python-urlgrabber ! Thomas -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org