[scripts] check for flake.nix

scripts/remote-install-encrypt.sh

@@ -1,5 +1,4 @@
 set -o errexit
-set -o nounset
 set -o pipefail
 
 if [ $# -lt 2 ]; then
@@ -9,6 +8,21 @@ if [ $# -lt 2 ]; then
   exit 1
 fi
 
+if [ ! -e flake.nix ]
+    then
+    echo "flake.nix not found. Searching down."
+    while [ ! -e flake.nix ]
+        do
+        if [ $PWD = "/" ]
+            then
+            echo "Found root. Aborting."
+            exit 1
+            else
+            cd ..
+        fi
+    done
+fi
+
 hostname=$1
 ipaddress=$2