From 25ee2516c2f8368eb348630ab3004bb72e2c73f0 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Fri, 16 Feb 2018 16:53:07 +0100
Subject: [PATCH] haskell-generic-builder: simplify outputs attribute logic

The arguments cannot contain outputs, so the if-then-else here is pointless.
---
 pkgs/development/haskell-modules/generic-builder.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 14a8a628b58..71b2d1288a0 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -191,7 +191,7 @@ assert allPkgconfigDepends != [] -> pkgconfig != null;
 stdenv.mkDerivation ({
   name = "${pname}-${version}";
 
-  outputs = if (args ? outputs) then args.outputs else ([ "out" ] ++ (optional enableSeparateDataOutput "data") ++ (optional enableSeparateDocOutput "doc"));
+  outputs = [ "out" ] ++ (optional enableSeparateDataOutput "data") ++ (optional enableSeparateDocOutput "doc");
   setOutputFlags = false;
 
   pos = builtins.unsafeGetAttrPos "pname" args;