chore: update templates (#58)

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Source-Link: googleapis/synthtool@32af6da
Source-Link: googleapis/synthtool@a073c87
Source-Link: googleapis/synthtool@9a7d9fb
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Source-Link: googleapis/synthtool@1f1148d
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Source-Link: googleapis/synthtool@5f6ef0e
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secretmanager/snippets/noxfile.py

@@ -39,6 +39,10 @@
     # You can opt out from the test for specific Python versions.
     'ignored_versions': ["2.7"],
 
+    # Old samples are opted out of enforcing Python type hints
+    # All new samples should feature them
+    'enforce_type_hints': False,
+
     # An envvar key for determining the project id to use. Change it
     # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
     # build specific Cloud project. You can also use your own string
@@ -132,7 +136,10 @@ def _determine_local_import_names(start_dir):
 
 @nox.session
 def lint(session):
-    session.install("flake8", "flake8-import-order")
+    if not TEST_CONFIG['enforce_type_hints']:
+        session.install("flake8", "flake8-import-order")
+    else:
+        session.install("flake8", "flake8-import-order", "flake8-annotations")
 
     local_names = _determine_local_import_names(".")
     args = FLAKE8_COMMON_ARGS + [
@@ -141,8 +148,18 @@ def lint(session):
         "."
     ]
     session.run("flake8", *args)
+#
+# Black
+#
 
 
+@nox.session
+def blacken(session):
+    session.install("black")
+    python_files = [path for path in os.listdir(".") if path.endswith(".py")]
+
+    session.run("black", *python_files)
+
 #
 # Sample Tests
 #
@@ -201,6 +218,11 @@ def _get_repo_root():
             break
         if Path(p / ".git").exists():
             return str(p)
+        # .git is not available in repos cloned via Cloud Build
+        # setup.py is always in the library's root, so use that instead
+        # https://github.com/googleapis/synthtool/issues/792
+        if Path(p / "setup.py").exists():
+            return str(p)
         p = p.parent
     raise Exception("Unable to detect repository root.")