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Merged
chalmerlowe merged 2 commits into from
Jun 23, 2026
Merged

feat(mypy): centralize mypy.ini and update templates #17523

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79ef976
feat(mypy): centralize mypy.ini and update templates
chalmerlowe Jun 22, 2026
179d905
fix(mypy): resolve mypy.ini location in integration test goldens
chalmerlowe Jun 23, 2026
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100 changes: 100 additions & 0 deletions mypy.ini
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Original file line number Diff line number Diff line change
@@ -0,0 +1,100 @@
[mypy]
namespace_packages = True
ignore_missing_imports = False

# Helps mypy navigate the "google" namespace more reliably in 3.10+
explicit_package_bases = True

# Performance: reuse results from previous runs to speed up "nox"
incremental = True

exclude = (?x)(
(^|/)third_party/
| (^|/)tests/unit/resources/
| (^|/)tests/unit/gapic/
)


# ==============================================================================
# GLOBAL THIRD-PARTY & SHARED LIBRARY IGNORES
# ==============================================================================

[mypy-anywidget]
ignore_missing_imports = True

[mypy-cloudpickle.*]
ignore_missing_imports = True

[mypy-flask]
ignore_missing_imports = True

[mypy-google.auth.*]
ignore_missing_imports = True

[mypy-google.cloud.bigtable]
ignore_missing_imports = True

[mypy-google.cloud.pubsub]
ignore_missing_imports = True

[mypy-google.colab]
ignore_missing_imports = True

[mypy-google.iam.*]
ignore_missing_imports = True

[mypy-google.longrunning.*]
ignore_missing_imports = True

[mypy-google.oauth2.*]
ignore_missing_imports = True

[mypy-google.protobuf.*]
ignore_missing_imports = True

[mypy-google.rpc.*]
ignore_missing_imports = True

[mypy-google.type.*]
ignore_missing_imports = True

[mypy-grpc.*]
ignore_missing_imports = True

[mypy-ibis.*]
ignore_missing_imports = True

[mypy-ipywidgets]
ignore_missing_imports = True

[mypy-proto.*]
ignore_missing_imports = True

[mypy-pyarrow.*]
ignore_missing_imports = True

[mypy-pydata_google_auth]
ignore_missing_imports = True

[mypy-pytest]
ignore_missing_imports = True

[mypy-pytz]
ignore_missing_imports = True


# ==============================================================================
# PACKAGE-SPECIFIC OVERRIDES & EXCEPTIONS
# ==============================================================================

# --- google-cloud-bigtable ---
[mypy-google.cloud.bigtable.*]
ignore_errors = True

[mypy-google.cloud.bigtable.data.*]
check_untyped_defs = True
warn_unreachable = True
disallow_any_generics = True
ignore_errors = False


3 changes: 0 additions & 3 deletions packages/gapic-generator/gapic/ads-templates/mypy.ini.j2
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9 changes: 9 additions & 0 deletions packages/gapic-generator/gapic/ads-templates/noxfile.py.j2
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Expand Up @@ -3,9 +3,17 @@
{% block content %}

import os
import pathlib

import nox # type: ignore

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)


# TODO(https://github.com/googleapis/gapic-generator-python/issues/2450):
# Add tests for Python 3.15 alpha1
Expand Down Expand Up @@ -44,6 +52,7 @@ def mypy(session):
session.install('.')
session.run(
'mypy',
f"--config-file={MYPY_CONFIG_FILE}",
{% if api.naming.module_namespace %}
'{{ api.naming.module_namespace[0] }}',
{% else %}
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/gapic/templates/mypy.ini.j2
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7 changes: 7 additions & 0 deletions packages/gapic-generator/gapic/templates/noxfile.py.j2
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Expand Up @@ -40,6 +40,12 @@ DEFAULT_PYTHON_VERSION = "3.14"
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "{{ api.naming.warehouse_package_name }}"
Expand Down Expand Up @@ -96,6 +102,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
{% if api.naming.module_namespace %}
"{{ api.naming.module_namespace[0] }}",
Expand Down
3 changes: 2 additions & 1 deletion packages/gapic-generator/rules_python_gapic/test/integration_test.bzl
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Expand Up @@ -114,8 +114,9 @@ def _overwrite_golden_impl(ctx):
golden_update_script_content = """
cd ${{BUILD_WORKSPACE_DIRECTORY}}
# Filename pattern-based removal is needed to preserve the BUILD.bazel file.
find tests/integration/goldens/{api_name}/ -name \\*.py-type f -delete
find tests/integration/goldens/{api_name}/ -name \\*.py -type f -delete
find tests/integration/goldens/{api_name}/ -name \\*.json -type f -delete
find tests/integration/goldens/{api_name}/ -name \\*.ini -type f -delete
unzip -ao {goldens_output_zip} -d tests/integration/goldens/{api_name}
""".format(
goldens_output_zip = goldens_output_zip.path,
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/asset/mypy.ini
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7 changes: 7 additions & 0 deletions packages/gapic-generator/tests/integration/goldens/asset/noxfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "google-cloud-asset"
Expand Down Expand Up @@ -103,6 +109,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
"google",
"--check-untyped-defs",
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/credentials/mypy.ini
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7 changes: 7 additions & 0 deletions packages/gapic-generator/tests/integration/goldens/credentials/noxfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "google-iam-credentials"
Expand Down Expand Up @@ -103,6 +109,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
"google",
"--check-untyped-defs",
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/eventarc/mypy.ini
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7 changes: 7 additions & 0 deletions packages/gapic-generator/tests/integration/goldens/eventarc/noxfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "google-cloud-eventarc"
Expand Down Expand Up @@ -103,6 +109,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
"google",
"--check-untyped-defs",
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/logging/mypy.ini
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7 changes: 7 additions & 0 deletions packages/gapic-generator/tests/integration/goldens/logging/noxfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "google-cloud-logging"
Expand Down Expand Up @@ -103,6 +109,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
"google",
"--check-untyped-defs",
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/logging_internal/mypy.ini
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7 changes: 7 additions & 0 deletions packages/gapic-generator/tests/integration/goldens/logging_internal/noxfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,12 @@
PREVIEW_PYTHON_VERSION = "3.14"

CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
# Path to the centralized mypy configuration file at the repository root.
# Search upwards to support running nox from both monorepo packages and integration test goldens.
MYPY_CONFIG_FILE = next(
(str(p / "mypy.ini") for p in CURRENT_DIRECTORY.parents if (p / "mypy.ini").exists()),
str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
)

LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
PACKAGE_NAME = "google-cloud-logging"
Expand Down Expand Up @@ -103,6 +109,7 @@ def mypy(session):
session.install(".")
session.run(
"mypy",
f"--config-file={MYPY_CONFIG_FILE}",
"-p",
"google",
"--check-untyped-defs",
Expand Down
15 changes: 0 additions & 15 deletions packages/gapic-generator/tests/integration/goldens/redis/mypy.ini
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