diff --git a/vagrant/centos.sh b/vagrant/centos.sh
new file mode 100644
index 0000000..311286e
--- /dev/null
+++ b/vagrant/centos.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+### Add PUIAS repo
+
+yum install curl -y
+
+if [ ! -f /etc/pki/rpm-gpg/RPM-GPG-KEY-puias ]; then
+    curl -s http://www.math.ias.edu/data/puias/6/i386/os/RPM-GPG-KEY-puias > /etc/pki/rpm-gpg/RPM-GPG-KEY-puias
+fi
+
+if [ ! -f /etc/yum.repos.d/puias-6-core.repo ]; then
+    rpm -i --nodeps http://springdale.math.ias.edu/data/puias/6/x86_64/os/Packages/springdale-release-6-6.5.0.45.sdl6.3.x86_64.rpm --replacefiles
+
+    rpm -i --nodeps http://springdale.math.ias.edu/data/puias/6/x86_64/os/Packages/springdale-core-6-2.sdl6.10.noarch.rpm
+fi
+
+if [ ! -f /etc/yum.repos.d/puias-6-computational.repo ]; then
+    yum install springdale-computational -y
+fi
+
+
+### Install dependencies
+
+yum -y groupinstall "Development tools"
+
+yum install -y git unzip mercurial libev-devel gettext libxml2-devel libxslt-devel openssl-devel libffi-devel libjpeg-turbo-devel zlib-devel freetype-devel postgresql-devel python27 python27-devel postgresql-server
+
+### Install Virtualenvwrapper
+which pip2.7 > /dev/null ||
+    curl -s -L https://raw.githubusercontent.com/pypa/pip/1.5.6/contrib/get-pip.py |
+        python2.7
+
+if [ ! -f /etc/profile.d/virtualenvwrapper.sh ]
+then
+    pip install virtualenvwrapper
+    cat > "/etc/profile.d/virtualenvwrapper.sh" <<EOF
+export VIRTUALENVWRAPPER_PYTHON="/usr/bin/python2.7"
+source /usr/bin/virtualenvwrapper.sh
+EOF
+fi
+
+### Create conf directory
+mkdir -p /etc/colab
+chown vagrant:vagrant /etc/colab
+
+
+## Configuring postgres
+if [ ! -f /var/lib/pgsql/data/pg_hba.conf.bkp ]; then
+    cp /var/lib/pgsql/data/pg_hba.conf /var/lib/pgsql/data/pg_hba.conf.bkp
+    echo "host  all  colab  127.0.0.1/32  md5" > /var/lib/pgsql/data/pg_hba.conf
+    echo "host  all  colab  ::1/128       md5" >> /var/lib/pgsql/data/pg_hba.conf
+    service postgresql initdb &> /dev/null
+    service postgresql restart
+fi
+
+
+### Create colab user in PostgreSQL
+echo "CREATE USER colab WITH PASSWORD 'colab';" | sudo -u postgres -i psql 2> /dev/null || echo
+
+#i## Create colab DB in PostgreSQL
+sudo -u postgres -i createdb --owner=colab colab 2> /dev/null | echo
diff --git a/vagrant/provision.sh b/vagrant/provision.sh
index d876d4d..11c813a 100644
--- a/vagrant/provision.sh
+++ b/vagrant/provision.sh
@@ -1,6 +1,12 @@
 #!/bin/bash
 
-source /usr/local/bin/virtualenvwrapper.sh
+export VIRTUALENVWRAPPER_PYTHON="/usr/bin/python2.7"
+
+if [ -f /usr/local/bin/virtualenvwrapper.sh ]; then
+    source /usr/local/bin/virtualenvwrapper.sh
+else
+    source /usr/bin/virtualenvwrapper.sh
+fi
 
 if [ ! -d /home/vagrant/.virtualenvs/colab ]; then
     mkvirtualenv colab
@@ -11,7 +17,7 @@ workon colab
 pip install -r /vagrant/requirements.txt
 pip install -e /vagrant
 
-if [ ! -f /etc/colab/settings.yaml ]; then
+if [ ! -s /etc/colab/settings.yaml ]; then
     colab-init-config > /etc/colab/settings.yaml
 fi
 
--
libgit2 0.21.2