diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
index 3cc64af2c4bc..877636fe56cc 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
@@ -8,9 +8,6 @@ self: super: {
   inherit (pkgs) llvmPackages;
 
   # Disable GHC 8.4.x core libraries.
-  #
-  # Verify against:
-  # ls /nix/store/wnh3kxra586h9wvxrn62g4lmsri2akds-ghc-8.4.20180115/lib/ghc-8.4.20180115/ -1 | sort | grep -e '-' | grep -Ev '(txt|h|targets)$'
   array = null;
   base = null;
   binary = null;
@@ -20,12 +17,11 @@ self: super: {
   deepseq = null;
   directory = null;
   filepath = null;
-  bin-package-db = null;
   ghc-boot = null;
   ghc-boot-th = null;
   ghc-compact = null;
-  ghci = null;
   ghc-prim = null;
+  ghci = null;
   haskeline = null;
   hpc = null;
   integer-gmp = null;
@@ -33,6 +29,7 @@ self: super: {
   parsec = null;
   pretty = null;
   process = null;
+  rts = null;
   stm = null;
   template-haskell = null;
   terminfo = null;