diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 03a4a5fa53eb..da57a8eda064 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -55,6 +55,13 @@ with pkgs;
 
   stringsWithDeps = lib.stringsWithDeps;
 
+  ### Evaluating the entire NixPkgs naively will fail, make failure fast
+  AAAAAASomeThingsFailToEvaluate = throw ''
+    Please be informed that this pseudo-package is not the only part of
+    NixPkgs that fails to evaulate. You should not evaluate entire NixPkgs
+    without some special measures to handle failing packages, like those taken
+    by Hydra.
+  '';
 
   ### Nixpkgs maintainer tools