From eb1e07865eeee2523a12d6630c84283e1784fe52 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 29 May 2020 18:23:30 +0200
Subject: [PATCH] haskell-devtools: break infinite recursion with mprelude

---
 pkgs/development/haskell-modules/configuration-nix.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index b64205a5ebcd..db627581d8cd 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -542,6 +542,9 @@ self: super: builtins.intersectAttrs super {
   # Break infinite recursion cycle between tasty and clock.
   clock = dontCheck super.clock;
 
+  # Break infinite recursion cycle between devtools and mprelude.
+  devtools = super.devtools.override { mprelude = dontCheck super.mprelude; };
+
   # loc and loc-test depend on each other for testing. Break that infinite cycle:
   loc-test = super.loc-test.override { loc = dontCheck self.loc; };