fixes

configure.sh

@@ -149,10 +149,11 @@ else
   echo "== docker already configured =="
 fi
 
-NIX_USER_CONF_FILES="$HOME/nix.conf"
+NIX_USER_CONF_FILES="$HOME/config/nix/nix.conf"
 NIX_SECRET_SIGN_KEY_FILE="$HOME/nix-sign.private"
 
 if [[ "$CONFIG_CHANGED" -eq 1 || ! -f "$NIX_USER_CONF_FILES" ]]; then
+  mkdir -p "$HOME/config/nix/nix.conf"
   echo "== SETTING UP NIX CONFIG =="
 
   if [[ -v NIX_SECRET_SIGN_KEY ]]; then