diff --git a/flake.nix b/flake.nix
index d76d4e33..7bb5499b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -231,6 +231,7 @@
                 if pkgs.stdenv.isLinux
                 then
                   mkOsConfigCheck (builtins.removeAttrs self.nixosConfigurations [
+                    # too big for current CI structure and rarely used
                     "vm-nixcache"
                   ])
                 else if pkgs.stdenv.isDarwin