Pins setuptools to <82 to avoid issue with pkg_resources

Author: chalmerlowe

noxfile.py

@@ -179,6 +179,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
+    # Pin setuptools to a version before the removal of pkg_resources
+    session.install("setuptools<82")
+
     if protobuf_implementation == "cpp" and session.python in (
         "3.11",
         "3.12",
@@ -198,6 +201,8 @@ def unit(session, protobuf_implementation):
     if protobuf_implementation == "cpp":
         session.install("protobuf<4")
 
+    session.run("python", "-m", "pip", "freeze")
+
     # Run py.test against the unit tests.
     session.run(
         "py.test",

testing/constraints-3.9.txt

@@ -15,4 +15,5 @@ google-cloud-documentai==2.29.2
 google-cloud-storage==2.7.0
 pandas-gbq==0.21.0
 numpy==1.23.5
-pikepdf==8.2.3
+pikepdf==8.2.3
+setuptools<82.0.0