chore: pip check on conda forge dependencies (#723)

* chore: pip check on conda forge dependencies

* reformatted with black

* Update noxfile.py

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---------

Co-authored-by: Chalmer Lowe <[email protected]>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: 3 people

noxfile.py

@@ -22,6 +22,7 @@
 import pathlib
 import re
 import shutil
+import subprocess
 import warnings
 
 import nox
@@ -614,6 +615,12 @@ def conda_test(session):
     # for troubleshooting purposes.
     session.run("mamba", "list")
 
+    # Using subprocess.run() instead of session.run() because
+    # session.run() does not correctly handle the pip check command.
+    subprocess.run(
+        ["pip", "check"], check=True
+    )  # Raise an exception if pip check fails
+
     # Tests are limited to unit tests only, at this time.
     session.run(
         "py.test",