From 714b2c33df575f29395cabceeaaf26076aa39f3f Mon Sep 17 00:00:00 2001
From: Kristoffer Carlsson <kristoffer.carlsson@chalmers.se>
Date: Tue, 4 Sep 2018 09:20:34 -0400
Subject: [PATCH] use default proxy credentials when downloading via powershell

(cherry picked from commit d495fed46606ff29685135bc63bffb5f7cc6d463)
---
 stdlib/Pkg/src/PlatformEngines.jl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/stdlib/Pkg/src/PlatformEngines.jl b/stdlib/Pkg/src/PlatformEngines.jl
index 8fb430d146be8..736ccccb0ea67 100644
--- a/stdlib/Pkg/src/PlatformEngines.jl
+++ b/stdlib/Pkg/src/PlatformEngines.jl
@@ -199,6 +199,8 @@ function probe_platform_engines!(;verbose::Bool = false)
                 [System.Net.ServicePointManager]::SecurityProtocol =
                     [System.Net.SecurityProtocolType]::Tls12;
                 \$webclient = (New-Object System.Net.Webclient);
+                \$webclient.UseDefaultCredentials = \$true;
+                \$webclient.Proxy.Credentials = \$webclient.Credentials;
                 \$webclient.Headers.Add("user-agent", \"Pkg.jl (https://github.com/JuliaLang/Pkg.jl)\");
                 \$webclient.DownloadFile(\"$url\", \"$path\")
                 """