diff --git a/Vagrantfile b/Vagrantfile
index 8a9098b..5c1ebd0 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -22,14 +22,13 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   if distro == "precise64"
     config.vm.box_url = "https://cloud-images.ubuntu.com/vagrant/precise/current/precise-server-cloudimg-amd64-vagrant-disk1.box"
-    config.vm.provision "shell", path: "vagrant/ubuntu.sh"
   elsif distro == "trusty64"
     config.vm.box_url = "https://cloud-images.ubuntu.com/vagrant/trusty/current/trusty-server-cloudimg-amd64-vagrant-disk1.box"
-    config.vm.provision "shell", path: "vagrant/ubuntu.sh"
   elsif distro == "centos6.5"
     config.vm.box_url = "https://github.com/2creatives/vagrant-centos/releases/download/v6.5.3/centos65-x86_64-20140116.box"
-    config.vm.provision "shell", path: "vagrant/centos.sh"
   end
+
+  config.vm.provision "shell", keep_color: true, path: 'vagrant/bootstrap.sh'
   config.vm.provision "shell", privileged: false, keep_color: true, path: "vagrant/provision.sh"
 
   config.vm.network :forwarded_port, guest: 8000, host: 8000 # Colab (runserver)
diff --git a/vagrant/bootstrap.sh b/vagrant/bootstrap.sh
new file mode 100644
index 0000000..62fac13
--- /dev/null
+++ b/vagrant/bootstrap.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -e
+
+if [ -d /vagrant/colab ]; then
+  basedir=/vagrant/colab
+else
+  basedir=/vagrant
+fi
+
+# very simple OS detection
+if [ -x /usr/bin/apt-get ]; then
+  exec sh $basedir/vagrant/ubuntu.sh
+fi
+if [ -x /usr/bin/yum ]; then
+  exec sh $basedir/vagrant/centos.sh
+fi
--
libgit2 0.21.2