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-rw-r--r--pkgs/top-level/haskell-packages.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 130a4e7006ef..e6986a5b5498 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -330,6 +330,9 @@ rec {
     lts-4_1 = packages.ghc7103.override {
       packageSetConfig = callPackage ../development/haskell-modules/configuration-lts-4.1.nix { };
     };
+    lts-4_2 = packages.ghc7103.override {
+      packageSetConfig = callPackage ../development/haskell-modules/configuration-lts-4.2.nix { };
+    };
 
   };
 }