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-rw-r--r--pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
index a60de8f95f8..d3f1c8513cb 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix
@@ -69,4 +69,8 @@ self: super: {
   tar = doJailbreak super.tar;                               # containers >=0.2 && <0.6
   test-framework = doJailbreak super.test-framework;         # containers >=0.1 && <0.6
 
+  # https://github.com/haskell/fgl/issues/79
+  # https://github.com/haskell/fgl/issues/81
+  fgl = appendPatch super.fgl ./patches/fgl-monad-fail.patch;
+
 }