fix(atlantis): Switch to dragonfly

.envrc

@@ -1,14 +1,9 @@
 #!/usr/bin/env bash
 # the shebang is ignored, but nice for editors
-watch_file lon.lock
+watch_file nix/sources.json
 
 # Load .env file if it exists
 dotenv_if_exists
 
 # Activate development shell
-if type -P lorri &>/dev/null; then
-  eval "$(lorri direnv)"
-else
-  echo 'while direnv evaluated .envrc, could not find the command "lorri" [https://github.com/nix-community/lorri]'
-  use nix
-fi
+use nix