From c607288a7c9a63d6b36b455b9c99142546050398 Mon Sep 17 00:00:00 2001
From: Sajid Ali <30510036+s-sajid-ali@users.noreply.github.com>
Date: Thu, 13 Feb 2020 20:16:34 -0600
Subject: [PATCH] fix env vars before install (#14575)

---
 var/spack/repos/builtin/packages/python/package.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/var/spack/repos/builtin/packages/python/package.py b/var/spack/repos/builtin/packages/python/package.py
index 37d65c54c00..978548163bd 100644
--- a/var/spack/repos/builtin/packages/python/package.py
+++ b/var/spack/repos/builtin/packages/python/package.py
@@ -212,6 +212,9 @@ def setup_build_environment(self, env):
         # Need this to allow python build to find the Python installation.
         env.set('MACOSX_DEPLOYMENT_TARGET', platform.mac_ver()[0])
 
+        env.unset('PYTHONPATH')
+        env.unset('PYTHONHOME')
+
     def configure_args(self):
         spec = self.spec
         config_args = []