Update CI checking

.github/workflows/pretest.yml

@@ -7,25 +7,29 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
     - name: setup python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: '3.10'
 
     - name: install
       run: |
         pip install -U pip wheel
-        pip install flake8 autopep8
+        pip install ruff autopep8 mypy
 
-    - name: flake8
+    - name: ruff
       run: |
-        flake8
+        ruff check
 
     - name: autopep8
       run: |
         autopep8 -r . --global-config .pep8 --diff | tee check_autopep8
         test ! -s check_autopep8
+
+    - name: mypy
+      run: |
+        mypy

builder/setup_cuda_opt_lib.py

@@ -6,6 +6,7 @@
 from __future__ import annotations
 
 import argparse
+import os
 import shutil
 import sys
 from pathlib import Path
@@ -17,7 +18,10 @@
 
 def merge_directory(src_dir: Path, dst_dir: Path) -> None:
     """Merge two directory trees."""
-    for srcpath, _, files in Path.walk(src_dir):
+    # MEMO: Path.walk is only available from py3.12
+    for srcpath, files in (
+        (Path(srcpath), files) for srcpath, _, files in os.walk(src_dir)
+    ):
         dstpath = dst_dir / srcpath.relative_to(src_dir)
         if not dstpath.exists():
             print(f'Creating directory: {dstpath}')

pyproject.toml

@@ -0,0 +1,18 @@
+[tool.ruff]
+line-length = 79
+extend-exclude = [".pfnci"]
+
+[tool.ruff.lint]
+extend-select = ["I002", "Q"]
+
+[tool.ruff.lint.isort]
+required-imports = ["from __future__ import annotations"]
+
+[tool.ruff.lint.flake8-quotes]
+docstring-quotes = "double"
+inline-quotes = "single"
+
+[tool.mypy]
+files = ["builder/*.py", "verifier/*.py", "*.py"]
+strict = true
+ignore_missing_imports = true

release-tests/common/test_basic.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy

release-tests/common/test_nvtx.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy.cuda.nvtx as libnvtx

release-tests/cudnn/test_cudnn.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy

release-tests/nccl/test_nccl.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy.cuda.nccl as libnccl

release-tests/pkg_sdist/test_preload.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy

release-tests/pkg_wheel/test_preload.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import sys
 import unittest
 

release-tests/sparse/test_basic.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 import cupy

requirements.txt

@@ -0,0 +1,2 @@
+distlib
+typing-extensions