build: migrate build system to scikit-build-core

.github/workflows/build.yml

@@ -15,20 +15,22 @@ jobs:
           - os: ubuntu-24.04-arm
             cibw_archs: aarch64
           - os: windows-latest
-            cibw_archs: AMD64 ARM64
+            cibw_archs: AMD64
+          - os: windows-11-arm
+            cibw_archs: ARM64
           - os: macos-latest
             cibw_archs: universal2
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: astral-sh/setup-uv@v6
+      - uses: actions/checkout@v6
+      - uses: astral-sh/setup-uv@v8.2.0
 
       - name: Build wheels on ${{ matrix.os }}-${{ matrix.cibw_archs }}
-        uses: pypa/cibuildwheel@v3.1.4
+        uses: pypa/cibuildwheel@v3.4.1
         env:
           CIBW_BUILD_FRONTEND: build[uv]
           CIBW_PROJECT_REQUIRES_PYTHON: ">=3.9"
-          CIBW_SKIP: "pp*"
+          CIBW_SKIP: "cp39-win_arm64 cp310-win_arm64"
           CIBW_ARCHS: ${{ matrix.cibw_archs }}
           CIBW_TEST_COMMAND: python {project}/tests/test_cases.py
         with:
@@ -37,7 +39,7 @@ jobs:
       - name: Run abi3audit
         run: uvx abi3audit --report ./wheelhouse/*-abi3-*.whl
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: pycocotools-${{ matrix.os }}-${{ matrix.cibw_archs }}-${{ strategy.job-index }}
           path: ./wheelhouse/*.whl
@@ -50,12 +52,12 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Build sdist
         run: pipx run build --sdist ./PythonAPI
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: pycocotools-sdist
           path: ./PythonAPI/dist/*.tar.gz
@@ -71,7 +73,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
         with:
           path: dist
           merge-multiple: true

.github/workflows/unittest.yml

@@ -24,8 +24,8 @@ jobs:
           - numpy>=2.0.0
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: astral-sh/setup-uv@v6
+      - uses: actions/checkout@v6
+      - uses: astral-sh/setup-uv@v8.2.0
 
       - name: Fix windows symlink
         if: runner.os == 'Windows'

PythonAPI/CMakeLists.txt

@@ -0,0 +1,33 @@
+cmake_minimum_required(VERSION 3.15...3.29)
+project(${SKBUILD_PROJECT_NAME} LANGUAGES C)
+
+find_package(
+    Python
+    COMPONENTS Interpreter Development.Module ${SKBUILD_SABI_COMPONENT} NumPy
+    REQUIRED
+)
+
+set(PYX_SOURCE "${CMAKE_CURRENT_SOURCE_DIR}/pycocotools/_mask.pyx")
+set(GENERATED_C "${CMAKE_CURRENT_BINARY_DIR}/_mask.c")
+
+add_custom_command(
+    OUTPUT "${GENERATED_C}"
+    MAIN_DEPENDENCY "${PYX_SOURCE}"
+    VERBATIM
+    COMMAND Python::Interpreter -m cython "${PYX_SOURCE}" --output-file "${GENERATED_C}"
+    COMMENT "Generating C source from _mask.pyx"
+)
+
+if(NOT "${SKBUILD_SABI_VERSION}" STREQUAL "")
+    Python_add_library(_mask MODULE "${GENERATED_C}" "${CMAKE_CURRENT_SOURCE_DIR}/common/maskApi.c" WITH_SOABI USE_SABI ${SKBUILD_SABI_VERSION})
+else()
+    Python_add_library(_mask MODULE "${GENERATED_C}" "${CMAKE_CURRENT_SOURCE_DIR}/common/maskApi.c" WITH_SOABI)
+endif()
+
+target_include_directories(
+    _mask PRIVATE
+    "${CMAKE_CURRENT_SOURCE_DIR}/common"
+    ${Python_NumPy_INCLUDE_DIRS}
+)
+
+install(TARGETS _mask DESTINATION pycocotools)

PythonAPI/pyproject.toml

@@ -2,6 +2,54 @@
 requires = [
     "cython>=3.1.0",
     "numpy>=2.0.0,<3",
-    "setuptools>=70.1.0",
+    "scikit-build-core>=0.12.0",
 ]
-build-backend = "setuptools.build_meta"
+build-backend = "scikit_build_core.build"
+
+[project]
+name = "pycocotools"
+version = "2.0.11"
+description = "Official APIs for the MS-COCO dataset"
+requires-python = ">=3.9"
+license.text = "FreeBSD"
+dependencies = [
+    "numpy",
+]
+
+[project.readme]
+text = '''
+# pycocotools
+
+This is a fork of the original [cocoapi](https://github.com/cocodataset/cocoapi), with bug fixes and packaging improvements.
+
+This is also the "official" source of the pypi package `pycocotools`, available for download at [pypi](https://pypi.org/project/pycocotools/).
+
+Changes in this fork include:
+* Add CircleCI tests
+* Support pip-installation correctly
+* Support windows
+* Don't import matplotlib unless needed
+* Close file handle after openning
+* Fix a small bug in rleToBbox
+* Fix a segfault in RLE decoding
+* Fix deprecated usage of other libraries
+
+For compatibility, we will not make any API changes or non-bug behavior changes to the existing APIs of the official cocoapi.
+
+## Instructions for maintainers: to build a sdist package:
+```
+python -m build --sdist ./PythonAPI
+```
+'''
+content-type = "text/markdown"
+
+[project.urls]
+Homepage = "https://github.com/ppwwyyxx/cocoapi"
+
+[project.optional-dependencies]
+all = ["matplotlib>=2.1.0"]
+
+[tool.scikit-build]
+cmake.build-type = "Release"
+wheel.packages = ["pycocotools"]
+wheel.py-api = "cp312"