ci: update pre-commit and fix ci

.github/workflows/ci.yaml

@@ -11,19 +11,23 @@ on:
       - master
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run pre-commit linting
         run: pipx run pre-commit run --all-files
 
   check-manifest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       # this test ensures that the sdist contains all necessary files
       # if it fails, you need to either update MANIFEST.in,
       # or add an explicit "ignore" rule to pyproject.toml
@@ -41,11 +45,12 @@ jobs:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: conda-incubator/setup-miniconda@v2
         with:
           python-version: ${{ matrix.python-version }}
-          mamba-version: "*"
+          miniforge-version: latest
+          use-mamba: true
           channels: conda-forge,gurobi,defaults
           channel-priority: true
 
@@ -66,7 +71,7 @@ jobs:
           python -m pip install -U pip
           python -m pip install -e .[dev]
         env:
-          CYTHON_TRACE: 1  # enable coverage of cython code
+          CYTHON_TRACE: 1 # enable coverage of cython code
 
       - name: run tests
         run: pytest --color yes -v --cov ilpy --cov-report=xml
@@ -83,7 +88,7 @@ jobs:
     name: Build sdist, Publish to PyPI on tagged versions
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "3.x"

.gitignore

@@ -9,3 +9,4 @@ ilpy/wrapper.cpp
 
 build
 dist
+.vscode

.pre-commit-config.yaml

@@ -4,8 +4,8 @@ ci:
   autoupdate_commit_msg: "ci(pre-commit.ci): autoupdate"
 
 repos:
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.261
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.4
     hooks:
       - id: ruff
         args: [--fix]
@@ -17,12 +17,12 @@ repos:
       - id: double-quote-cython-strings
 
   - repo: https://github.com/psf/black
-    rev: 23.3.0
+    rev: 23.10.1
     hooks:
       - id: black
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.2.0
+    rev: v1.6.1
     hooks:
       - id: mypy
         files: "^ilpy/"

ilpy/expressions.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import ast
-from typing import Any, Sequence, Union
+from typing import Any, ClassVar, Sequence, Union
 
 from ilpy.wrapper import Constraint, Objective, Relation, Sense
 
@@ -412,7 +412,9 @@ class _ExprSerializer(ast.NodeVisitor):
     Used above in `Expression.__str__`.
     """
 
-    OP_MAP: dict[type[ast.operator] | type[ast.cmpop] | type[ast.unaryop], str] = {
+    OP_MAP: ClassVar[
+        dict[type[ast.operator] | type[ast.cmpop] | type[ast.unaryop], str]
+    ] = {
         # ast.cmpop
         ast.Eq: "==",
         ast.Gt: ">",

pyproject.toml

@@ -1,6 +1,6 @@
 # https://peps.python.org/pep-0517
 [build-system]
-requires = ["setuptools", "Cython"]
+requires = ["setuptools", "Cython<3"]
 build-backend = "setuptools.build_meta"
 
 # https://peps.python.org/pep-0621/
@@ -48,6 +48,7 @@ target-version = "py38"
 src = ["ilpy"]
 select = [
     "F",   # pyflakes
+    "W",   # pyflakes
     "E",   # pycodestyle
     "I",   # isort
     "UP",  # pyupgrade