- restore the use of PYTHONNOUSERSITE that was removed

in df3f125bd84fc7ec5d45592c5774daf3a39d9bc9, this flag is
explicitly checked within conftest.py and we need to continue to use
it, otherwise a tox build inside of .tox that isn't usedevelop
is ignored, including C extensions
- rework the whole system of running with coverage, so that
with coverage, we *are* using usedevelop, but also make sure
we rm the .so files for nocext, make sure we --cov-append, etc.

1 files changed, 6 insertions, 0 deletions

diff --git a/test/conftest.py b/test/conftest.py
index 36dfaa792..9488a7159 100755
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -10,6 +10,11 @@ import sys
 import os
 
 if not sys.flags.no_user_site:
+    # this is needed so that test scenarios like "python setup.py test"
+    # work correctly, as well as plain "py.test".  These commands assume
+    # that the package in question is locally present, but since we have
+    # ./lib/, we need to punch that in.
+    # We check no_user_site to honor the use of this flag.
     sys.path.insert(
         0,
         os.path.join(
@@ -28,3 +33,4 @@ with open(bootstrap_file) as f:
     to_bootstrap = "pytest"
     exec(code, globals(), locals())
     from pytestplugin import *  # noqa
+