diff --git a/nix/packages/by-name/ruler/package.nix b/nix/packages/by-name/ruler/package.nix
index 88a13b25..93ca8105 100644
--- a/nix/packages/by-name/ruler/package.nix
+++ b/nix/packages/by-name/ruler/package.nix
@@ -1,3 +1,5 @@
+# Use the following to start a hoogle server for the project
+# nix-shell -E 'with import ./. {}; packages.ruler.envFunc{withHoogle = true;}' --run "hoogle server --local"
 {
   haskellPackages,
   haskell,