diff --git a/flake.nix b/flake.nix
index ef79ae9..44090b2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,7 @@
 
   inputs = {
     flake-compat = {
+      # for shell.nix compat
       url = "github:edolstra/flake-compat";
       flake = false;
     };