sudo bash -c "echo 'deb-src http://httpredir.debian.org/debian/ experimental main contrib non-free' > experimental.list"
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0x0E98404D386FA1D9 0x6ED0E7B82643E131
sudo apt-get update
sudo apt-get build-dep gnupg2
sudo apt-get source --compile gnupg2
sudo apt-get install ./*.deb