diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
index 8652b010859..b0612c55792 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
@@ -298,4 +298,7 @@ self: super: {
             in addBuildDepends jsaddle' [ self.glib self.gtk3 self.webkitgtk3
                                           self.webkitgtk3-javascriptcore ];
 
+  # Fix evaluation in GHC >=7.8: https://github.com/lambdabot/lambdabot/issues/116
+  lambdabot = appendPatch super.lambdabot ./lambdabot-fix-ghc78.patch;
+
 }
diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.8.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.8.x.nix
index 4eb2be5552f..5257717673a 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.8.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.8.x.nix
@@ -125,4 +125,7 @@ self: super: {
             in addBuildDepends jsaddle' [ self.glib self.gtk3 self.webkitgtk3
                                           self.webkitgtk3-javascriptcore ];
 
+  # Fix evaluation in GHC >=7.8: https://github.com/lambdabot/lambdabot/issues/116
+  lambdabot = appendPatch super.lambdabot ./lambdabot-fix-ghc78.patch;
+
 }