Pin pyfakefs to avoid broken release

The recent pyfakefs 4.2.0 release is raising an import error whenever it's imported, see pytest-dev/pyfakefs#565 for more details. This commit pins the pyfakefs version to the last known working version until there is a new release fixing this issue.
mtreinish · Nov 2, 2020 · c4466b7 · c4466b7
1 parent 9b93389
commit c4466b7
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/constraints.txt b/constraints.txt
@@ -2,3 +2,4 @@ pylint==2.4.4
 astroid==2.3.3
 pywin32==225
 setuptools==49.6.0
+pyfakefs==4.1.0