[edk2-staging/EdkRepo] [PATCH] EdkRepo: Prevent environment variables from causing install failures

["Nate DeSimone" <nathaniel.l.desimone@intel.com>]

If the following two environment variables in the global system scope:

PIP_INDEX_URL
PIP_TARGET

It will breaks the EdkRepo installer's ability to place files into the
Python site-packages directory. To workaround this, the installer should
temporarily delete those environment variables.

Cc: Ashley E Desimone <ashley.e.desimone@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Puja Pandya <puja.pandya@intel.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Prince Agyeman <prince.agyeman@intel.com>
Cc: Erik Bjorge <erik.c.bjorge@intel.com>
Signed-off-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
---
 edkrepo_installer/EdkRepoInstaller/InstallWorker.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/edkrepo_installer/EdkRepoInstaller/InstallWorker.cs b/edkrepo_installer/EdkRepoInstaller/InstallWorker.cs
index 679b4f4..0dadbbf 100644
--- a/edkrepo_installer/EdkRepoInstaller/InstallWorker.cs
+++ b/edkrepo_installer/EdkRepoInstaller/InstallWorker.cs
@@ -576,6 +576,8 @@ namespace TianoCore.EdkRepoInstaller
             Action ReportFailure = new Action(delegate () { FailureReported = true; });
             Environment.SetEnvironmentVariable("PYTHONHOME", null);
             Environment.SetEnvironmentVariable("PYTHONPATH", null);
+            Environment.SetEnvironmentVariable("PIP_INDEX_URL", null);
+            Environment.SetEnvironmentVariable("PIP_TARGET", null);
             if (VendorCustomizer.Instance != null)
             {
                 VendorCustomizer.Instance.WriteToInstallLog = new Action<string>(InstallLogger.Log);
-- 
2.27.0.windows.1