diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d416c5eff42..b79ecf611a5 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7794,6 +7794,8 @@ let
 
   kde4 = recurseIntoAttrs pkgs.kde45;
 
+  # TODO: merge with branches/drop-kde4.5 if you want to remove KDE SC 4.5
+  # This branch removes kde45 and quite a few compatibility hacks
   kde45 = kdePackagesFor pkgs.kde45 "4.5";
   kde47 = kdePackagesFor pkgs.kde47 "4.7";