From a7144523cf310cd34a873f18fc4f55e06acf8d9e Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 17 Oct 2017 11:49:29 +0200
Subject: [PATCH] haskell-partial-semigroup: break cyclic reference that
 results in an infinite recursion

---
 pkgs/development/haskell-modules/configuration-nix.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index 1051c4e416f1..8146674a9435 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -503,4 +503,8 @@ self: super: builtins.intersectAttrs super {
 
   # Written against the 6.X series of megaparsec
   htoml-megaparsec = super.htoml-megaparsec.override { megaparsec = self.megaparsec_6_2_0; };
+
+  # Break cyclic reference that results in an infinite recursion.
+  partial-semigroup = dontCheck super.partial-semigroup;
+
 }