Specify build backend via pyproject.toml

.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

.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: 0.11.2
+    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

@@ -847,14 +847,7 @@ 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/build_prepare.py

@@ -569,7 +569,11 @@ 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 --upgrade pip',
+        r'"{python_dir}\{python_exe}" -m pip install . '
+        r'--global-option="--vendor-raqm" '
+        r'--global-option="--vendor-fribidi" '
+        r'--global-option="%*"',
     ]
 
     write_script("build_pillow.cmd", lines)