Kloxo-MR (also Kloxo Official) not using duplicity. This package can installing because Kloxo-MR including epel repo and this package from epel.
You can see the content of /etc/yum.repos.d/kloxo-mr.repo and learn other repos including.
For example, We can install php52/php53u/php54 instead php branch. Kloxo-MR taken from ius repo and spec for this repo including inside kloxo-mr.repo.
This is content of kloxo-mr.repo when install kloxo with using from github source:
[kloxo-mr-release-core]
name=Kloxo-MR - release-core
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/release/kloxo/noarch/
enabled=1
gpgcheck=0
[kloxo-mr-release-noarch]
name=Kloxo-MR - release-noarch
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/release/centos$releasever/noarch/
enabled=1
gpgcheck=0
[kloxo-mr-release-arch]
name=Kloxo-MR - release-$basearch
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/release/centos$releasever/$basearch/
enabled=1
gpgcheck=0
[kloxo-mr-testing-core]
name=Kloxo-MR - testing-core
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/testing/kloxo/noarch/
enabled=0
gpgcheck=0
[kloxo-mr-testing-noarch]
name=Kloxo-MR - testing-noarch
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/testing/centos$releasever/noarch/
enabled=0
gpgcheck=0
[kloxo-mr-testing-arch]
name=Kloxo-MR - testing-$basearch
baseurl=https://github.com/mustafaramadhan/kloxo/raw/rpms/testing/centos$releasever/$basearch/
enabled=0
gpgcheck=0
# ==================================
[kloxo-mr-centalt]
name=Kloxo-MR - centalt - $basearch
baseurl=http://centos.alt.ru/repository/centos/$releasever/$basearch/
enabled=1
gpgcheck=0
exclude=openssh*
# ==================================
[kloxo-mr-ius]
name=Kloxo-MR - IUS Community Packages for Enterprise Linux $releasever - $basearch
baseurl=http://dl.iuscommunity.org/pub/ius/stable/Redhat/$releasever/$basearch
mirrorlist=http://dmirr.iuscommunity.org/mirrorlist/?repo=ius-el$releasever&arch=$basearch
enabled=1
gpgcheck=0
# ==================================
[kloxo-mr-epel]
name=Kloxo-MR - Extra Packages for Enterprise Linux $releasever - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/$releasever/$basearch
mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-$releasever&arch=$basearch
enabled=1
gpgcheck=0
So you can see other repo (epel, ius and centalt) also included.
You can found different detail if install Kloxo-MR from potissima:
[kloxo-mr-release-neutral-noarch]
name=Kloxo-MR - release-neutral-noarch
baseurl=http://rpms.potissima.com/repo/release/neutral/noarch/
enabled=1
gpgcheck=0
[kloxo-mr-release-neutral-arch]
name=Kloxo-MR - release-neutral-$basearch
baseurl=http://rpms.potissima.com/repo/release/neutral/$basearch/
enabled=1
gpgcheck=0
[kloxo-mr-release-version-noarch]
name=Kloxo-MR - release-version-noarch
baseurl=http://rpms.potissima.com/repo/release/centos$releasever/noarch/
enabled=1
gpgcheck=0
exclude=*-toaster djbdns
[kloxo-mr-release-version-arch]
name=Kloxo-MR - release-version-$basearch
baseurl=http://rpms.potissima.com/repo/release/centos$releasever/$basearch/
enabled=1
gpgcheck=0
exclude=*-toaster djbdns
[kloxo-mr-testing-neutral-noarch]
name=Kloxo-MR - testing-neutral-noarch
baseurl=http://rpms.potissima.com/repo/testing/neutral/noarch/
enabled=0
gpgcheck=0
[kloxo-mr-testing-neutral-arch]
name=Kloxo-MR - testing-neutral-$basearch
baseurl=http://rpms.potissima.com/repo/testing/neutral/$basearch/
enabled=0
gpgcheck=0
[kloxo-mr-testing-version-noarch]
name=Kloxo-MR - testing-version-noarch
baseurl=http://rpms.potissima.com/repo/testing/centos$releasever/noarch/
enabled=0
gpgcheck=0
[kloxo-mr-testing-version-arch]
name=Kloxo-MR - testing-version-$basearch
baseurl=http://rpms.potissima.com/repo/testing/centos$releasever/$basearch/
enabled=0
gpgcheck=0
[kloxo-mr-srpms]
name=Kloxo-MR - srpms
baseurl=http://rpms.potissima.com/repo/SRPMS/
enabled=0
gpgcheck=0
# ==================================
[kloxo-mr-lxcenter]
name=Kloxo-MR - lxcenter - $basearch
baseurl=http://download.lxcenter.org/download/update/centos-$releasever/$basearch/
enabled=1
gpgcheck=0
includepkgs=vpopmail qmail spamassasin *-toaster djbdns
# ==================================
[kloxo-mr-centalt]
name=Kloxo-MR - centalt - $basearch
baseurl=http://centos.alt.ru/repository/centos/$releasever/$basearch/
enabled=1
gpgcheck=0
exclude=openssh*
# ==================================
[kloxo-mr-ius]
name=Kloxo-MR - IUS Community Packages for Enterprise Linux $releasever - $basearch
baseurl=http://dl.iuscommunity.org/pub/ius/stable/Redhat/$releasever/$basearch
mirrorlist=http://dmirr.iuscommunity.org/mirrorlist/?repo=ius-el$releasever&arch=$basearch
enabled=1
gpgcheck=0
# ==================================
[kloxo-mr-epel]
name=Kloxo-MR - Extra Packages for Enterprise Linux $releasever - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/$releasever/$basearch
mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-$releasever&arch=$basearch
enabled=1
gpgcheck=0
# ==================================
# for varnish
[kloxo-mr-varnish-3.0]
name=Kloxo-MR - Varnish 3.0 for Enterprise Linux $releasever - $basearch
baseurl=http://repo.varnish-cache.org/redhat/varnish-3.0/el$releasever/$basearch
enabled=1
gpgcheck=0
# ==================================
# for hiawatha
[kloxo-mr-centosec]
name=Kloxo-MR - CentOS $releasever Packages from CentOS.EC
baseurl=http://centos$releasever.ecualinux.com/$basearch
enabled=1
gpgcheck=0
# ==================================
# for nginx-stable
[kloxo-mr-nginx]
name=Kloxo-MR - nginx repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1