From c7cc743b52e839960b935e4ad9c0cacb9f571abb Mon Sep 17 00:00:00 2001
From: Jude Taylor <me@jude.bio>
Date: Thu, 15 Oct 2015 18:08:53 -0700
Subject: [PATCH] inherit system for builtin fetchurl in PD

---
 pkgs/stdenv/pure-darwin/default.nix | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/pkgs/stdenv/pure-darwin/default.nix b/pkgs/stdenv/pure-darwin/default.nix
index 5fbfb16a66ed..c043da8a8a79 100644
--- a/pkgs/stdenv/pure-darwin/default.nix
+++ b/pkgs/stdenv/pure-darwin/default.nix
@@ -18,16 +18,13 @@ let
     "/usr/lib/system"
   ];
 
-  fetch = { file, sha256 }: let drv = import <nix/fetchurl.nix> {
+  fetch = { file, sha256 }: derivation ((import <nix/fetchurl.nix> {
     url = "https://dl.dropboxusercontent.com/u/2857322/${file}";
-    inherit sha256;
+    inherit sha256 system;
     executable = true;
-  }; in
-  if drv.drvAttrs.system == "x86_64-darwin"
-    then derivation (drv.drvAttrs // {
-      __impureHostDeps = libSystemClosure;
-    })
-    else drv;
+  }).drvAttrs // {
+    __impureHostDeps = libSystemClosure;
+  });
 
   bootstrapFiles = {
     sh    = fetch { file = "sh";    sha256 = "1qakpg37vl61jnkplz13m3g1csqr85cg8ybp6jwiv6apmg26isnm"; };