Specify build backend via pyproject.toml

.appveyor.yml

@@ -20,6 +20,7 @@ environment:
 
 install:
 - '%PYTHON%\%EXECUTABLE% --version'
+- '%PYTHON%\%EXECUTABLE% -m pip install --upgrade pip'
 - curl -fsSL -o pillow-depends.zip https://github.com/python-pillow/pillow-depends/archive/main.zip
 - curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
 - 7z x pillow-depends.zip -oc:\
@@ -71,7 +72,7 @@ before_deploy:
   - cd c:\pillow
   - '%PYTHON%\%EXECUTABLE% -m pip install wheel'
   - cd c:\pillow\winbuild\
-  - c:\pillow\winbuild\build\build_pillow.cmd bdist_wheel
+  - c:\pillow\winbuild\build\build_pillow.cmd --global-option="bdist_wheel"
   - cd c:\pillow
   - ps: Get-ChildItem .\dist\*.* | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
 

.github/workflows/test-windows.yml

@@ -65,8 +65,8 @@ jobs:
     - name: Print build system information
       run: python3 .github/workflows/system-info.py
 
-    - name: python3 -m pip install setuptools wheel pytest pytest-cov pytest-timeout defusedxml
-      run: python3 -m pip install setuptools wheel pytest pytest-cov pytest-timeout defusedxml
+    - name: python3 -m pip install wheel pytest pytest-cov pytest-timeout defusedxml
+      run: python3 -m pip install wheel pytest pytest-cov pytest-timeout defusedxml
 
     - name: Install dependencies
       id: install
@@ -166,8 +166,8 @@ jobs:
     - name: Build Pillow
       run: |
         $FLAGS=""
-        if ('${{ github.event_name }}' -ne 'pull_request') { $FLAGS="--disable-imagequant" }
-        & winbuild\build\build_pillow.cmd $FLAGS install
+        if ('${{ github.event_name }}' -ne 'pull_request') { $FLAGS='--global-option="--disable-imagequant"' }
+        & winbuild\build\build_pillow.cmd $FLAGS --global-option="install"
         & $env:pythonLocation\python.exe selftest.py --installed
       shell: pwsh
 
@@ -231,7 +231,7 @@ jobs:
           )
         )
         for /f "tokens=3 delims=/" %%a in ("${{ github.ref }}") do echo dist=dist-%%a >> %GITHUB_OUTPUT%
-        winbuild\\build\\build_pillow.cmd --disable-imagequant bdist_wheel
+        winbuild\\build\\build_pillow.cmd --global-option="--disable-imagequant" --global-option="bdist_wheel"
       shell: cmd
 
     - name: Upload wheel

.pre-commit-config.yaml

@@ -49,13 +49,24 @@ repos:
     hooks:
       - id: check-merge-conflict
       - id: check-json
+      - id: check-toml
       - id: check-yaml
 
   - repo: https://github.com/sphinx-contrib/sphinx-lint
     rev: v0.6.7
     hooks:
       - id: sphinx-lint
 
+  - repo: https://github.com/tox-dev/pyproject-fmt
+    rev: 0.12.1
+    hooks:
+      - id: pyproject-fmt
+
+  - repo: https://github.com/abravalheri/validate-pyproject
+    rev: v0.13
+    hooks:
+      - id: validate-pyproject
+
   - repo: https://github.com/tox-dev/tox-ini-fmt
     rev: 1.3.0
     hooks:

pyproject.toml

@@ -0,0 +1,5 @@
+[build-system]
+build-backend = "setuptools.build_meta"
+requires = [
+  "setuptools>=67.8",
+]

setup.py

@@ -137,7 +137,6 @@ class RequiredDependencyException(Exception):
 
 
 PLATFORM_MINGW = os.name == "nt" and "GCC" in sys.version
-PLATFORM_PYPY = hasattr(sys, "pypy_version_info")
 
 
 def _dbg(s, tp=None):
@@ -847,14 +846,7 @@ def build_extensions(self):
         if struct.unpack("h", b"\0\1")[0] == 1:
             defs.append(("WORDS_BIGENDIAN", None))
 
-        if (
-            sys.platform == "win32"
-            and sys.version_info < (3, 9)
-            and not (PLATFORM_PYPY or PLATFORM_MINGW)
-        ):
-            defs.append(("PILLOW_VERSION", f'"\\"{PILLOW_VERSION}\\""'))
-        else:
-            defs.append(("PILLOW_VERSION", f'"{PILLOW_VERSION}"'))
+        defs.append(("PILLOW_VERSION", f'"{PILLOW_VERSION}"'))
 
         self._update_extension("PIL._imaging", libs, defs)
 

winbuild/README.md

@@ -20,10 +20,10 @@ set PYTHON=C:\Python38\bin
 cd /D C:\Pillow\winbuild
 C:\Python39\bin\python.exe build_prepare.py -v --depends=C:\pillow-depends
 build\build_dep_all.cmd
-build\build_pillow.cmd install
+build\build_pillow.cmd --global-option="install"
 cd ..
 path C:\Pillow\winbuild\build\bin;%PATH%
 %PYTHON%\python.exe selftest.py
 %PYTHON%\python.exe -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
-build\build_pillow.cmd bdist_wheel
+build\build_pillow.cmd --global-option="bdist_wheel"
 ```

winbuild/build.rst

@@ -87,9 +87,9 @@ Building Pillow
 ---------------
 
 Once the dependencies are built, run
-``winbuild\build\build_pillow.cmd install`` to build and install
+``winbuild\build\build_pillow.cmd --global-option="install"`` to build and install
 Pillow for the selected version of Python.
-``winbuild\build\build_pillow.cmd bdist_wheel`` will build wheels
+``winbuild\build\build_pillow.cmd --global-option="bdist_wheel"`` will build wheels
 instead of installing Pillow.
 
 You can also use ``winbuild\build\build_pillow.cmd --inplace develop`` to build
@@ -114,9 +114,9 @@ The following is a simplified version of the script used on AppVeyor::
     cd /D C:\Pillow\winbuild
     C:\Python39\bin\python.exe build_prepare.py -v --depends C:\pillow-depends
     build\build_dep_all.cmd
-    build\build_pillow.cmd install
+    build\build_pillow.cmd --global-option="install"
     cd ..
     path C:\Pillow\winbuild\build\bin;%PATH%
     %PYTHON%\python.exe selftest.py
     %PYTHON%\python.exe -m pytest -vx --cov PIL --cov Tests --cov-report term --cov-report xml Tests
-    build\build_pillow.cmd bdist_wheel
+    build\build_pillow.cmd --global-option="bdist_wheel"

winbuild/build_prepare.py

@@ -569,7 +569,10 @@ def build_pillow():
         *prefs["header"],
         cmd_set("DISTUTILS_USE_SDK", "1"),  # use same compiler to build Pillow
         cmd_set("py_vcruntime_redist", "true"),  # always use /MD, never /MT
-        r'"{python_dir}\{python_exe}" setup.py build_ext --vendor-raqm --vendor-fribidi %*',  # noqa: E501
+        r'"{python_dir}\{python_exe}" -m pip install . '
+        r'--global-option="--vendor-raqm" '
+        r'--global-option="--vendor-fribidi" '
+        r"%*",
     ]
 
     write_script("build_pillow.cmd", lines)