Revert "try python -E to run scripts"

This reverts commit 4168979.

Author: mayeut

scripts/entry-point.py.in

@@ -1,7 +1,14 @@
-#!python -E
+#!python
 
+import os
 import sys
+import sysconfig
 
+# Scripts can be broken by pip's build isolation hacks
+# See: https://github.com/pypa/pip/blob/102d8187a1f5a4cd5de7a549fd8a9af34e89a54f/src/pip/_internal/build_env.py#L87
+pl = sysconfig.get_paths()['platlib']
+if pl not in sys.path:
+    sys.path.append(pl)
 
 from cmake import ${program}