From 70974c252d3fe3b53bce3891cf84df6f87f16d94 Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Wed, 7 May 2025 11:12:26 +0000
Subject: [PATCH 1/6] build: clean up github action

---
 .github/workflows/tests.yaml | 107 ++++++++++++++++++++++++-----------
 1 file changed, 74 insertions(+), 33 deletions(-)

diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 5b2efc098d..0e0615452c 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -16,8 +16,40 @@ concurrency:
 env:
   SHOWCASE_VERSION: 0.35.0
   PROTOC_VERSION: 3.20.2
+  OLDEST_PYTHON: 3.7
+  LATEST_STABLE_PYTHON: 3.13
+  PRE_RELEASE_PYTHON: 3.14
+  ALL_PYTHON: "['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']"
+
+permissions:
+  contents: read
 
 jobs:
+  # `all_python_setup` amd `python_config` are a workaround for a known issue where it's not possible to use environment variables outside of `steps`.
+  # Some jobs set up a text matrix which is outside of `steps` and environment variables can't be used directly. 
+  # This requires a workaround based on the discussion in:
+  # https://github.com/actions/runner/issues/2372
+  # The limitation is captured here where certain job configurations don't have access to `env`
+  # https://docs.github.com/en/enterprise-cloud@latest/actions/writing-workflows/choosing-what-your-workflow-does/accessing-contextual-information-about-workflow-runs#context-availability 
+  all_python_setup:
+    runs-on: ubuntu-latest
+    outputs:
+      all_python: ${{ env.ALL_PYTHON }}
+    steps:
+    - name: Set up all python
+      id: all_python
+      run: |
+        echo 'all_python={{ "${{ env.ALL_PYTHON }}" }}'
+  python_config:
+    runs-on: ubuntu-latest
+    outputs:
+      oldest_python: ${{ env.OLDEST_PYTHON }}
+      latest_stable_python: ${{ env.LATEST_STABLE_PYTHON }}
+    steps:
+    - name: Print env variables for `python_config`
+      run: |
+        echo 'oldest_python={{ "${{ env.OLDEST_PYTHON }}" }}'
+        echo 'latest_stable_python={{ "${{ env.LATEST_STABLE_PYTHON }}" }}'
   docs:
     runs-on: ubuntu-latest
     steps:
@@ -34,11 +66,15 @@ jobs:
       - name: Build the documentation.
         run: nox -s docs
   mypy:
+    needs: all_python_setup
     strategy:
       matrix:
         # Run mypy on all of the supported python versions listed in setup.py
         # https://github.com/python/mypy/blob/master/setup.py
-        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python: ${{ fromJSON(needs.all_python_setup.outputs.all_python) }}
+        exclude:
+          # Remove once https://github.com/googleapis/gapic-generator-python/issues/2303 is fixed
+          - python: '3.7'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -52,11 +88,12 @@ jobs:
       - name: Check type annotations.
         run: nox -s mypy-${{ matrix.python }}
   showcase:
+    needs: python_config
     strategy:
       # Run showcase tests on the lowest and highest supported runtimes
       matrix:
         # TODO(https://github.com/googleapis/gapic-generator-python/issues/2121) Remove `showcase_w_rest_async` target when async rest is GA.
-        python: ["3.7", "3.13"]
+        python: ["${{ needs.python_config.outputs.oldest_python }}", "${{ needs.python_config.outputs.latest_stable_python }}"]
         target: [showcase, showcase_w_rest_async]
         logging_scope: ["", "google"]
 
@@ -111,10 +148,10 @@ jobs:
         run: |
           sudo mkdir -p /tmp/workspace/tests/cert/
           sudo chown -R ${USER} /tmp/workspace/
-      - name: Set up Python "3.13"
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Copy mtls files
         run: cp tests/cert/mtls.* /tmp/workspace/tests/cert/
@@ -145,9 +182,10 @@ jobs:
             nox -s ${{ matrix.target }}
   # TODO(yon-mg): add compute unit tests
   showcase-unit:
+    needs: all_python_setup
     strategy:
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python: ${{ fromJSON(needs.all_python_setup.outputs.all_python) }}
         # TODO(https://github.com/googleapis/gapic-generator-python/issues/2121) Remove `_w_rest_async` variant when async rest is GA.
         variant: ['', _alternative_templates, _mixins, _alternative_templates_mixins, _w_rest_async]
         logging_scope: ["", "google"]
@@ -185,10 +223,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "3.13"
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Install system dependencies.
         run: |
@@ -213,10 +251,10 @@ jobs:
         variant: ['', _alternative_templates]
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "3.13"
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Install system dependencies.
         run: |
@@ -235,13 +273,14 @@ jobs:
       - name: Typecheck the generated output.
         run: nox -s showcase_mypy${{ matrix.variant }}
   snippetgen:
+    needs: all_python_setup
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "3.13"
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Install system dependencies.
         run: |
@@ -252,10 +291,10 @@ jobs:
       - name: Check autogenerated snippets.
         run: nox -s snippetgen
   unit:
+    needs: all_python_setup
     strategy:
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
-
+        python: ${{ fromJSON(needs.all_python_setup.outputs.all_python) }}
     # TODO(https://github.com/googleapis/gapic-generator-python/issues/2303): use `ubuntu-latest` once this bug is fixed.
     # Use ubuntu-22.04 until Python 3.7 is removed from the test matrix
     runs-on: ubuntu-22.04
@@ -264,7 +303,7 @@ jobs:
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python }}
+          python-version: "${{ matrix.python }}"
           cache: 'pip'
       - name: Install pandoc
         run: |
@@ -276,9 +315,10 @@ jobs:
       - name: Run unit tests.
         run: nox -s unit-${{ matrix.python }}
   fragment:
+    needs: all_python_setup
     strategy:
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python: ${{ fromJSON(needs.all_python_setup.outputs.all_python) }}
         variant: ['', _alternative_templates]
 
     # TODO(https://github.com/googleapis/gapic-generator-python/issues/2303): use `ubuntu-latest` once this bug is fixed.
@@ -289,7 +329,7 @@ jobs:
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python }}
+          python-version: "${{ matrix.python }}"
           cache: 'pip'
       - name: Install pandoc
         run: |
@@ -333,29 +373,29 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.13
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: ${{ env.LATEST_STABLE_PYTHON }}
           cache: 'pip'
       - name: Install nox.
         run: |
             python -m pip install nox
       - name: Run blacken and lint on the generated output.
         run: |
-          nox -f tests/integration/goldens/asset/noxfile.py -s mypy-3.13 blacken lint
-          nox -f tests/integration/goldens/credentials/noxfile.py -s mypy-3.13 blacken lint
-          nox -f tests/integration/goldens/eventarc/noxfile.py -s mypy-3.13 blacken lint
-          nox -f tests/integration/goldens/logging/noxfile.py -s mypy-3.13 blacken lint
-          nox -f tests/integration/goldens/redis/noxfile.py -s mypy-3.13 blacken lint
+          nox -f tests/integration/goldens/asset/noxfile.py -s mypy-${{ env.LATEST_STABLE_PYTHON }} blacken lint
+          nox -f tests/integration/goldens/credentials/noxfile.py -s mypy-${{ env.LATEST_STABLE_PYTHON }} blacken lint
+          nox -f tests/integration/goldens/eventarc/noxfile.py -s mypy-${{ env.LATEST_STABLE_PYTHON }} blacken lint
+          nox -f tests/integration/goldens/logging/noxfile.py -s mypy-${{ env.LATEST_STABLE_PYTHON }} blacken lint
+          nox -f tests/integration/goldens/redis/noxfile.py -s mypy-${{ env.LATEST_STABLE_PYTHON }} blacken lint
   goldens-unit:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.13
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Install nox.
         run: |
@@ -365,19 +405,20 @@ jobs:
         # in order to run unit tests
         # See https://github.com/googleapis/gapic-generator-python/issues/1806
         run: |
-          nox -f tests/integration/goldens/credentials/noxfile.py -s unit-3.13
-          nox -f tests/integration/goldens/eventarc/noxfile.py -s unit-3.13
-          nox -f tests/integration/goldens/logging/noxfile.py -s unit-3.13
-          nox -f tests/integration/goldens/redis/noxfile.py -s unit-3.13
+          nox -f tests/integration/goldens/credentials/noxfile.py -s unit-${{ env.LATEST_STABLE_PYTHON }}
+          nox -f tests/integration/goldens/eventarc/noxfile.py -s unit-${{ env.LATEST_STABLE_PYTHON }}
+          nox -f tests/integration/goldens/logging/noxfile.py -s unit-${{ env.LATEST_STABLE_PYTHON }}
+          nox -f tests/integration/goldens/redis/noxfile.py -s unit-${{ env.LATEST_STABLE_PYTHON }}
   goldens-prerelease:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.13
+      - name: Set up Python ${{ env.PRE_RELEASE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.PRE_RELEASE_PYTHON }}"
           cache: 'pip'
+          allow-prereleases: true
       - name: Install nox.
         run: |
             python -m pip install nox
@@ -394,10 +435,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "3.13"
+      - name: Set up Python ${{ env.LATEST_STABLE_PYTHON }}
         uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: "${{ env.LATEST_STABLE_PYTHON }}"
           cache: 'pip'
       - name: Install nox.
         run: |

From 13f3a5203722605e99d26c1c4fbae60816a7691b Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Wed, 7 May 2025 15:35:04 +0000
Subject: [PATCH 2/6] add python 3.14

---
 .github/workflows/tests.yaml                   |  7 +++++--
 gapic/templates/noxfile.py.j2                  | 18 ++++++++++++------
 noxfile.py                                     |  3 ++-
 tests/integration/goldens/asset/noxfile.py     | 18 ++++++++++++------
 .../integration/goldens/credentials/noxfile.py | 18 ++++++++++++------
 tests/integration/goldens/eventarc/noxfile.py  | 18 ++++++++++++------
 tests/integration/goldens/logging/noxfile.py   | 18 ++++++++++++------
 .../goldens/logging_internal/noxfile.py        | 18 ++++++++++++------
 tests/integration/goldens/redis/noxfile.py     | 18 ++++++++++++------
 .../goldens/redis_selective/noxfile.py         | 18 ++++++++++++------
 10 files changed, 103 insertions(+), 51 deletions(-)

diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 0e0615452c..e57dac7f0c 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -19,7 +19,7 @@ env:
   OLDEST_PYTHON: 3.7
   LATEST_STABLE_PYTHON: 3.13
   PRE_RELEASE_PYTHON: 3.14
-  ALL_PYTHON: "['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']"
+  ALL_PYTHON: "['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']"
 
 permissions:
   contents: read
@@ -83,6 +83,7 @@ jobs:
         with:
           python-version: "${{ matrix.python }}"
           cache: 'pip'
+          allow-prereleases: true
       - name: Install nox.
         run: python -m pip install nox
       - name: Check type annotations.
@@ -200,6 +201,7 @@ jobs:
         with:
           python-version: "${{ matrix.python }}"
           cache: 'pip'
+          allow-prereleases: true
       - name: Install system dependencies.
         run: |
             sudo apt-get update
@@ -305,6 +307,7 @@ jobs:
         with:
           python-version: "${{ matrix.python }}"
           cache: 'pip'
+          allow-prereleases: true
       - name: Install pandoc
         run: |
             sudo apt-get update
@@ -320,7 +323,6 @@ jobs:
       matrix:
         python: ${{ fromJSON(needs.all_python_setup.outputs.all_python) }}
         variant: ['', _alternative_templates]
-
     # TODO(https://github.com/googleapis/gapic-generator-python/issues/2303): use `ubuntu-latest` once this bug is fixed.
     # Use ubuntu-22.04 until Python 3.7 is removed from the test matrix
     runs-on: ubuntu-22.04
@@ -331,6 +333,7 @@ jobs:
         with:
           python-version: "${{ matrix.python }}"
           cache: 'pip'
+          allow-prereleases: true
       - name: Install pandoc
         run: |
             sudo apt-get update
diff --git a/gapic/templates/noxfile.py.j2 b/gapic/templates/noxfile.py.j2
index 35a19afdda..b601e5b151 100644
--- a/gapic/templates/noxfile.py.j2
+++ b/gapic/templates/noxfile.py.j2
@@ -29,9 +29,11 @@ ALL_PYTHON = [
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -51,7 +53,7 @@ UNIT_TEST_DEPENDENCIES: List[str] = []
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -223,7 +225,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -231,7 +235,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -425,7 +429,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -438,7 +442,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/noxfile.py b/noxfile.py
index 117ca47c5e..01ca50269e 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -44,9 +44,10 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 )
 
-NEWEST_PYTHON = ALL_PYTHON[-1]
+NEWEST_PYTHON = ALL_PYTHON[-2]
 
 
 @nox.session(python=ALL_PYTHON)
diff --git a/tests/integration/goldens/asset/noxfile.py b/tests/integration/goldens/asset/noxfile.py
index 49691dd51e..aade8c8199 100755
--- a/tests/integration/goldens/asset/noxfile.py
+++ b/tests/integration/goldens/asset/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/credentials/noxfile.py b/tests/integration/goldens/credentials/noxfile.py
index 442d98c88f..a369c03ba8 100755
--- a/tests/integration/goldens/credentials/noxfile.py
+++ b/tests/integration/goldens/credentials/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/eventarc/noxfile.py b/tests/integration/goldens/eventarc/noxfile.py
index f7d75738e4..2046f263cc 100755
--- a/tests/integration/goldens/eventarc/noxfile.py
+++ b/tests/integration/goldens/eventarc/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/logging/noxfile.py b/tests/integration/goldens/logging/noxfile.py
index 18f1f2bc16..0921c115e1 100755
--- a/tests/integration/goldens/logging/noxfile.py
+++ b/tests/integration/goldens/logging/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/logging_internal/noxfile.py b/tests/integration/goldens/logging_internal/noxfile.py
index 18f1f2bc16..0921c115e1 100755
--- a/tests/integration/goldens/logging_internal/noxfile.py
+++ b/tests/integration/goldens/logging_internal/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/redis/noxfile.py b/tests/integration/goldens/redis/noxfile.py
index 89ab6bcec9..e577fcbe75 100755
--- a/tests/integration/goldens/redis/noxfile.py
+++ b/tests/integration/goldens/redis/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies
diff --git a/tests/integration/goldens/redis_selective/noxfile.py b/tests/integration/goldens/redis_selective/noxfile.py
index 89ab6bcec9..e577fcbe75 100755
--- a/tests/integration/goldens/redis_selective/noxfile.py
+++ b/tests/integration/goldens/redis_selective/noxfile.py
@@ -36,9 +36,11 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-2]
+PRE_RELEASE_PYTHON = ALL_PYTHON[-1]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -58,7 +60,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,7 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
@@ -230,7 +234,7 @@ def unit(session, protobuf_implementation):
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -419,7 +423,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PRE_RELEASE_PYTHON)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -432,7 +436,9 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13", "3.14"):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies

From d0775d2a112a9087eed239163274fff25a26faf1 Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Fri, 26 Sep 2025 17:41:16 +0000
Subject: [PATCH 3/6] add constraints file

---
 .../templates/testing/constraints-3.14.txt.j2 | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 gapic/templates/testing/constraints-3.14.txt.j2

diff --git a/gapic/templates/testing/constraints-3.14.txt.j2 b/gapic/templates/testing/constraints-3.14.txt.j2
new file mode 100644
index 0000000000..ef07e24064
--- /dev/null
+++ b/gapic/templates/testing/constraints-3.14.txt.j2
@@ -0,0 +1,20 @@
+{% from '_pypi_packages.j2' import pypi_packages %}
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
+{% for package_tuple, package_info in pypi_packages.items() %}
+{# Quick check to make sure `package_info.package_name` is not the package being generated so we don't circularly include this package in its own constraints file. #}
+{% if api.naming.warehouse_package_name != package_info.package_name %}
+{% if api.requires_package(package_tuple) %}
+{{ package_info.package_name }}>={{ (package_info.upper_bound.split(".")[0] | int) - 1 }}
+{% endif %}
+{% endif %}
+{% endfor %}

From 7e02b53ebfca6cb0a948bae8f4824a11dbf40c21 Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Fri, 26 Sep 2025 18:23:33 +0000
Subject: [PATCH 4/6] See
 https://github.com/googleapis/gapic-generator-python/issues/2446

---
 gapic/schema/api.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gapic/schema/api.py b/gapic/schema/api.py
index 46fe9d3fb5..f3e83af61f 100644
--- a/gapic/schema/api.py
+++ b/gapic/schema/api.py
@@ -935,11 +935,13 @@ def enforce_valid_library_settings(
 
             # Check to see if selective gapic generation methods are valid.
             selective_gapic_errors = {}
+            # TODO(https://github.com/googleapis/gapic-generator-python/issues/2446):
+            # Workaround issue in Python 3.14 related to code coverage by adding `# pragma: no branch`
             for (
                 method_name
             ) in (
                 library_settings.python_settings.common.selective_gapic_generation.methods
-            ):
+            ): # pragma: no branch
                 if method_name not in self.all_methods:
                     selective_gapic_errors[method_name] = "Method does not exist."
                 elif not method_name.startswith(library_settings.version):

From 5a4c20481720e520104cd183e2d7368179c3a029 Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Fri, 26 Sep 2025 18:33:00 +0000
Subject: [PATCH 5/6] fix build

---
 gapic/schema/api.py                                | 14 +++++++-------
 .../goldens/asset/testing/constraints-3.14.txt     | 14 ++++++++++++++
 .../credentials/testing/constraints-3.14.txt       | 11 +++++++++++
 .../goldens/eventarc/testing/constraints-3.14.txt  | 12 ++++++++++++
 .../goldens/logging/testing/constraints-3.14.txt   | 11 +++++++++++
 .../logging_internal/testing/constraints-3.14.txt  | 11 +++++++++++
 .../goldens/redis/testing/constraints-3.14.txt     | 11 +++++++++++
 .../redis_selective/testing/constraints-3.14.txt   | 11 +++++++++++
 8 files changed, 88 insertions(+), 7 deletions(-)
 create mode 100755 tests/integration/goldens/asset/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/credentials/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/eventarc/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/logging/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/logging_internal/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/redis/testing/constraints-3.14.txt
 create mode 100755 tests/integration/goldens/redis_selective/testing/constraints-3.14.txt

diff --git a/gapic/schema/api.py b/gapic/schema/api.py
index f3e83af61f..05fb1a2fa5 100644
--- a/gapic/schema/api.py
+++ b/gapic/schema/api.py
@@ -941,13 +941,13 @@ def enforce_valid_library_settings(
                 method_name
             ) in (
                 library_settings.python_settings.common.selective_gapic_generation.methods
-            ): # pragma: no branch
+            ):  # pragma: no branch
                 if method_name not in self.all_methods:
                     selective_gapic_errors[method_name] = "Method does not exist."
                 elif not method_name.startswith(library_settings.version):
-                    selective_gapic_errors[method_name] = (
-                        "Mismatched version for method."
-                    )
+                    selective_gapic_errors[
+                        method_name
+                    ] = "Mismatched version for method."
 
             if selective_gapic_errors:
                 all_errors[library_settings.version] = [
@@ -1032,9 +1032,9 @@ def has_operations_mixin(self) -> bool:
     def _has_iam_overrides(self) -> bool:
         if not self.has_iam_mixin:
             return False
-        iam_mixin_methods: Dict[str, MethodDescriptorProto] = (
-            self._get_methods_from_service(iam_policy_pb2)
-        )
+        iam_mixin_methods: Dict[
+            str, MethodDescriptorProto
+        ] = self._get_methods_from_service(iam_policy_pb2)
         for _, s in self.services.items():
             for m_name in iam_mixin_methods:
                 if m_name in s.methods:
diff --git a/tests/integration/goldens/asset/testing/constraints-3.14.txt b/tests/integration/goldens/asset/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..763099d824
--- /dev/null
+++ b/tests/integration/goldens/asset/testing/constraints-3.14.txt
@@ -0,0 +1,14 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
+google-cloud-access-context-manager>=0
+google-cloud-os-config>=1
+grpc-google-iam-v1>=0
diff --git a/tests/integration/goldens/credentials/testing/constraints-3.14.txt b/tests/integration/goldens/credentials/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..c20a77817c
--- /dev/null
+++ b/tests/integration/goldens/credentials/testing/constraints-3.14.txt
@@ -0,0 +1,11 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
diff --git a/tests/integration/goldens/eventarc/testing/constraints-3.14.txt b/tests/integration/goldens/eventarc/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..2010e549cc
--- /dev/null
+++ b/tests/integration/goldens/eventarc/testing/constraints-3.14.txt
@@ -0,0 +1,12 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
+grpc-google-iam-v1>=0
diff --git a/tests/integration/goldens/logging/testing/constraints-3.14.txt b/tests/integration/goldens/logging/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..c20a77817c
--- /dev/null
+++ b/tests/integration/goldens/logging/testing/constraints-3.14.txt
@@ -0,0 +1,11 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
diff --git a/tests/integration/goldens/logging_internal/testing/constraints-3.14.txt b/tests/integration/goldens/logging_internal/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..c20a77817c
--- /dev/null
+++ b/tests/integration/goldens/logging_internal/testing/constraints-3.14.txt
@@ -0,0 +1,11 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
diff --git a/tests/integration/goldens/redis/testing/constraints-3.14.txt b/tests/integration/goldens/redis/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..c20a77817c
--- /dev/null
+++ b/tests/integration/goldens/redis/testing/constraints-3.14.txt
@@ -0,0 +1,11 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6
diff --git a/tests/integration/goldens/redis_selective/testing/constraints-3.14.txt b/tests/integration/goldens/redis_selective/testing/constraints-3.14.txt
new file mode 100755
index 0000000000..c20a77817c
--- /dev/null
+++ b/tests/integration/goldens/redis_selective/testing/constraints-3.14.txt
@@ -0,0 +1,11 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+proto-plus>=1
+protobuf>=6

From d175f0b328229893f8207b7675b62f39451eb3ac Mon Sep 17 00:00:00 2001
From: Anthonios Partheniou <partheniou@google.com>
Date: Fri, 26 Sep 2025 18:35:20 +0000
Subject: [PATCH 6/6] lint

---
 gapic/schema/api.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/gapic/schema/api.py b/gapic/schema/api.py
index 05fb1a2fa5..2c01b07363 100644
--- a/gapic/schema/api.py
+++ b/gapic/schema/api.py
@@ -945,9 +945,9 @@ def enforce_valid_library_settings(
                 if method_name not in self.all_methods:
                     selective_gapic_errors[method_name] = "Method does not exist."
                 elif not method_name.startswith(library_settings.version):
-                    selective_gapic_errors[
-                        method_name
-                    ] = "Mismatched version for method."
+                    selective_gapic_errors[method_name] = (
+                        "Mismatched version for method."
+                    )
 
             if selective_gapic_errors:
                 all_errors[library_settings.version] = [
@@ -1032,9 +1032,9 @@ def has_operations_mixin(self) -> bool:
     def _has_iam_overrides(self) -> bool:
         if not self.has_iam_mixin:
             return False
-        iam_mixin_methods: Dict[
-            str, MethodDescriptorProto
-        ] = self._get_methods_from_service(iam_policy_pb2)
+        iam_mixin_methods: Dict[str, MethodDescriptorProto] = (
+            self._get_methods_from_service(iam_policy_pb2)
+        )
         for _, s in self.services.items():
             for m_name in iam_mixin_methods:
                 if m_name in s.methods: