From 4256ab778a0cc50c88cbd0366c2f126edb06fc30 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edward=20Tj=C3=B6rnhammar?= <ed@cflags.cc>
Date: Tue, 28 Apr 2015 22:35:39 +0200
Subject: [PATCH] fetchhg: pass proxyvars to hg

---
 pkgs/build-support/fetchhg/default.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/fetchhg/default.nix b/pkgs/build-support/fetchhg/default.nix
index 4675cbe6ec80..26426ce7d83e 100644
--- a/pkgs/build-support/fetchhg/default.nix
+++ b/pkgs/build-support/fetchhg/default.nix
@@ -6,13 +6,17 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   buildInputs = [mercurial];
 
+  impureEnvVars = [
+    "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
+  ];
+
   # Nix <= 0.7 compatibility.
   id = md5;
 
   outputHashAlgo = if md5 != null then "md5" else "sha256";
   outputHashMode = "recursive";
   outputHash = if md5 != null then md5 else sha256;
-  
+
   inherit url rev;
   preferLocalBuild = true;
 }