From 6d71f6afb469e3ed9388fa9067d834953b639052 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Thu, 16 Jul 2015 20:35:51 +0200
Subject: better way of overwriting haskellPackages

---
 users/gkleen@vali.nix | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'users/gkleen@vali.nix')

diff --git a/users/gkleen@vali.nix b/users/gkleen@vali.nix
index 59da76e7..873e50c1 100644
--- a/users/gkleen@vali.nix
+++ b/users/gkleen@vali.nix
@@ -1,8 +1,14 @@
 {
   packageOverrides = pkgs: rec {
     redo = pkgs.callPackage ../custom/redo-wrapper.nix {};
-    myHaskellPackages = pkgs.haskellPackages // {
-      inherit (pkgs.haskellngPackages) boolexpr;
-    };
+    myHaskellPackages = pkgs.recurseIntoAttrs (
+      pkgs.haskellPackages.override {
+        extension = self: super: let
+	  callPackage = pkgs.lib.callPackageWith self;
+	in rec {
+          inherit (pkgs.haskellngPackages) boolexpr;
+        };
+      }
+    );
   } // (import ../utils/nix/default.nix) {};
 }
-- 
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