support Python 3.14 (#10896)

.github/workflows/benchmarks.yaml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/setup-python@v6
         with:
-            python-version: "3.13"
+            python-version: "3.14"
 
       - uses: actions/checkout@v5
         with:

.github/workflows/build.yaml

@@ -25,7 +25,7 @@ jobs:
 
     - uses: actions/setup-python@v6
       with:
-        python-version: 3.13
+        python-version: "3.14"
 
     - uses: astral-sh/setup-uv@v7
 

.github/workflows/plugin_tests.yaml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        pyv: ["3.13"]
+        pyv: ["3.14"]
         plugin: ["dvc-s3"]
 
     steps:

.github/workflows/tests.yaml

@@ -32,7 +32,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.13'
+        python-version: '3.14'
     - uses: astral-sh/setup-uv@v7
       with:
         enable-cache: true
@@ -55,7 +55,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        pyv: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        pyv: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
         include:
         - os: windows-latest
           pyv: "3.9"
@@ -117,6 +117,18 @@ jobs:
         - os: windows-latest
           pyv: "3.13"
           pytestargs: "--splitting-algorithm=least_duration --splits 4 --group 4"
+        - os: windows-latest
+          pyv: "3.14"
+          pytestargs: "--splitting-algorithm=least_duration --splits 4 --group 1"
+        - os: windows-latest
+          pyv: "3.14"
+          pytestargs: "--splitting-algorithm=least_duration --splits 4 --group 2"
+        - os: windows-latest
+          pyv: "3.14"
+          pytestargs: "--splitting-algorithm=least_duration --splits 4 --group 3"
+        - os: windows-latest
+          pyv: "3.14"
+          pytestargs: "--splitting-algorithm=least_duration --splits 4 --group 4"
     steps:
     - uses: actions/checkout@v5
       with:

pyproject.toml

@@ -29,6 +29,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
 ]
 dynamic = ["version"]
 

tests/conftest.py

@@ -194,6 +194,7 @@ def isolate(tmp_path_factory):
             monkeypatch.setenv(env_var, os.fspath(path))
     else:
         monkeypatch.setenv("HOME", str(home_dir))
+        monkeypatch.setenv("XDG_CONFIG_HOME", str(home_dir / ".config"))
 
     monkeypatch.setenv("GIT_CONFIG_NOSYSTEM", "1")
     contents = b"""