diff --git a/main.nix b/main.nix
index 0112450..7f58007 100644
--- a/main.nix
+++ b/main.nix
@@ -55,9 +55,13 @@ in
       phases = [ "buildPhase" ];
       buildPhase =
       ''
+      whoami
       export HOME=`mktemp -d`
       mkdir $HOME/.ssh
       cp /opt/hydra_id_rsa $HOME/.ssh/id_rsa
+      cp /opt/hydra_id_rsa.pub $HOME/.ssh/id_rsa.pub
+      echo "rpi,192.168.1.188 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMc7waNkP2HjL5Eo94evoxJhC8CbYj4i2n1THe5TPIR3" > $HOME/.ssh/known_hosts
+      chmod 600 $HOME/.ssh/id_rsa
       artiq_flash -t kc705 -H rpi
       sleep 15
       # ping: socket: Operation not permitted