diff --git a/.envrc b/.envrc
--- a/.envrc
+++ b/.envrc
@@ -1,5 +1,12 @@
-if ! has nix_direnv_version || ! nix_direnv_version 2.2.0; then
-  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.0/direnvrc" "sha256-5EwyKnkJNQeXrRkYbwwRBcXbibosCJqyIUuz9Xq+LRc="
-fi
+# reload when these files change
+watch_file flake.nix
+watch_file flake.lock
+watch_file nix/overlay.nix
 
-use flake .
+[[ $(type -t use_flake) == function ]] && use flake ||
+{
+  # shell gc root dir
+  mkdir -p "$(direnv_layout_dir)"
+
+  eval "$(nix print-dev-env --profile $(direnv_layout_dir)/flake-profile)"
+} || use nix