diff --git a/raspi.sh b/raspi.sh
index 64a6ffc..89bc16b 100644
--- a/raspi.sh
+++ b/raspi.sh
@@ -3,17 +3,10 @@
 set -e
 set -x
 
-# systemupdate
-sudo apt-get update
-sudo apt-get -y dist-upgrade
-
 # install ansible
-sudo apt-get -y install python3-pip git
-sudo pip install ansible
-
-# install mscore fonts
-echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | sudo debconf-set-selections
-sudo apt-get -y install ttf-mscorefonts-installer
+which pip || ( sudo apt-get update ; sudo apt-get -y dist-upgrade ; sudo apt-get -y install python3-pip )
+which git || ( sudo apt-get update ; sudo apt-get -y dist-upgrade ; sudo apt-get -y install git )
+which ansible || sudo pip install ansible
 
 # run ansible playbooks
 for playbook in debian.ansible.basics \