@@ -0,0 +1,7 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Only run this nox session.
+env_vars: {
+key: "NOX_SESSION"
+value: "prerelease_deps-3.10"
+}

@@ -3,5 +3,5 @@
 # Only run this nox session.
 env_vars: {
 key: "NOX_SESSION"
-value: "prerelease_deps"
+value: "prerelease_deps-3.8"
 }

@@ -0,0 +1,7 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Only run this nox session.
+env_vars: {
+key: "NOX_SESSION"
+value: "prerelease_deps-3.10"
+}

@@ -79,8 +79,6 @@ def default(session, install_extras=True):
 install_target = "."
 session.install("-e", install_target, "-c", constraints_path)
 
-session.install("ipython", "-c", constraints_path)
-
 # Run py.test against the unit tests.
 session.run(
 "py.test",
@@ -119,7 +117,6 @@ def unit_noextras(session):
 def mypy(session):
 """Run type checks with mypy."""
 session.install("-e", ".[all]")
-session.install("ipython")
 session.install(MYPY_VERSION)
 
 # Just install the dependencies' type info directly, since "mypy --install-types"
@@ -138,7 +135,6 @@ def pytype(session):
 # https://.com/googleapis/python-bigquery/issues/655
 session.install("attrs==20.3.0")
 session.install("-e", ".[all]")
-session.install("ipython")
 session.install(PYTYPE_VERSION)
 session.run("pytype")
 
@@ -180,7 +176,6 @@ def system(session):
 else:
 extras = "[all]"
 session.install("-e", f".{extras}", "-c", constraints_path)
-session.install("ipython", "-c", constraints_path)
 
 # Run py.test against the system tests.
 session.run("py.test", "--quiet", os.path.join("tests", "system"), *session.posargs)
@@ -355,7 +350,7 @@ def blacken(session):
 def docs(session):
 """Build the docs."""
 
-session.install("ipython", "recommonmark", "sphinx==4.0.1", "sphinx_rtd_theme")
+session.install("recommonmark", "sphinx==4.0.1", "sphinx_rtd_theme")
 session.install("google-cloud-storage")
 session.install("-e", ".[all]")
 

@@ -61,6 +61,7 @@
 "geopandas": ["geopandas>=0.9.0, <1.0dev", "Shapely>=1.6.0, <2.0dev"],
 "pandas": ["pandas>=0.24.2"] + pyarrow_dep,
 "bignumeric_type": pyarrow_dep,
+"ipython": ["ipython>=7.0.1,!=8.1.0"],
 "tqdm": ["tqdm >= 4.7.4, <5.0.0dev"],
 "opentelemetry": [
 "opentelemetry-api >= 1.1.0",

@@ -11,6 +11,7 @@ google-cloud-bigquery-storage==2.0.0
 google-cloud-core==1.4.1
 google-resumable-media==0.6.0
 grpcio==1.38.1
+ipython==7.0.1
 opentelemetry-api==1.1.0
 opentelemetry-instrumentation==0.20b0
 opentelemetry-sdk==1.1.0

@@ -14,6 +14,8 @@
 
 import pytest
 
+IPython = pytest.importorskip("IPython")
+
 
 @pytest.fixture(scope="session")
 def lexer_class():

@@ -14,6 +14,8 @@
 
 import pytest
 
+IPython = pytest.importorskip("IPython")
+
 
 @pytest.fixture(scope="session")
 def parser_class():

@@ -14,6 +14,8 @@
 
 import pytest
 
+IPython = pytest.importorskip("IPython")
+
 
 @pytest.fixture
 def base_visitor():

@@ -17,31 +17,30 @@
 from concurrent import futures
 import warnings
 
-import mock
-import pytest
-
-try:
-import pandas
-except ImportError: # pragma: NO COVER
-pandas = None
-
 from google.api_core import exceptions
 import google.auth.credentials
+import mock
+import pytest
+from tests.unit.helpers import make_connection
+from test_utils.imports import maybe_fail_import
 
 from google.cloud import bigquery
 from google.cloud.bigquery import job
 from google.cloud.bigquery import table
-from google.cloud.bigquery.magics import magics
 from google.cloud.bigquery.retry import DEFAULT_TIMEOUT
-from tests.unit.helpers import make_connection
-from test_utils.imports import maybe_fail_import
 
 
+try:
+from google.cloud.bigquery.magics import magics
+except ImportError:
+magics = None
+
+bigquery_storage = pytest.importorskip("google.cloud.bigquery_storage")
 IPython = pytest.importorskip("IPython")
-io = pytest.importorskip("IPython.utils.io")
-tools = pytest.importorskip("IPython.testing.tools")
 interactiveshell = pytest.importorskip("IPython.terminal.interactiveshell")
-bigquery_storage = pytest.importorskip("google.cloud.bigquery_storage")
+tools = pytest.importorskip("IPython.testing.tools")
+io = pytest.importorskip("IPython.utils.io")
+pandas = pytest.importorskip("pandas")
 
 
 @pytest.fixture(scope="session")