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-rw-r--r--pkgs/top-level/haskell-packages.nix4
1 files changed, 3 insertions, 1 deletions
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 764955b72104..798103153ece 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -522,7 +522,9 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   abstractPar = callPackage ../development/libraries/haskell/abstract-par {};
 
-  aeson = callPackage ../development/libraries/haskell/aeson {};
+  aeson_0_6_2_1 = callPackage ../development/libraries/haskell/aeson/0.6.2.1.nix {};
+  aeson_0_7_0_0 = callPackage ../development/libraries/haskell/aeson/0.7.0.0.nix {};
+  aeson = self.aeson_0_6_2_1;
 
   aesonLens = callPackage ../development/libraries/haskell/aeson-lens {};