From 2ebd00727bdf4d3d406e2915b10ce77e085537f2 Mon Sep 17 00:00:00 2001
From: Ben Darnell <ben@bendarnell.com>
Date: Sat, 21 Apr 2018 16:34:55 -0400
Subject: [PATCH] appveyor: Upgrade pip with 'python -m pip'

This reportedly works around https://github.com/pypa/pip/issues/5240
---
 appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appveyor.yml b/appveyor.yml
index 620c338b99..374c76e3c2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -48,7 +48,7 @@ install:
 
   # Upgrade to the latest version of pip to avoid it displaying warnings
   # about it being out of date.
-  - "pip install --disable-pip-version-check --user --upgrade pip"
+  - "python -m pip install --disable-pip-version-check --user --upgrade pip"
 
   - "pip install tox wheel"