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-rw-r--r--pkgs/development/haskell-modules/configuration-nix.nix5
1 files changed, 5 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index c65a249fb554..c37093e7020f 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -329,6 +329,11 @@ self: super: builtins.intersectAttrs super {
   # Heist's test suite requires system pandoc
   heist = addTestToolDepend pkgs.pandoc super.heist;
 
+  # Use Nixpkgs' double-conversion library
+  double-conversion = disableCabalFlag "embedded_double_conversion" (
+    addBuildDepends [ pkgs.double-conversion ] super.double-conversion
+  );
+
   # https://github.com/NixOS/cabal2nix/issues/136 and https://github.com/NixOS/cabal2nix/issues/216
   gio = lib.pipe super.gio
     [ (disableHardening ["fortify"])