Fix PEP-517 issues for projects using build scripts

Resolves: python-poetry/poetry#1516

poetry/core/masonry/builders/wheel.py

@@ -25,6 +25,7 @@
 from ..utils.helpers import normalize_file_permissions
 from ..utils.package_include import PackageInclude
 from .builder import Builder
+from .sdist import SdistBuilder
 
 
 wheel_file_template = """\
@@ -92,39 +93,38 @@ def build(self):
 
     def _build(self, wheel):
         if self._package.build:
-            setup = self._path / "setup.py"
-
-            # We need to place ourselves in the temporary
-            # directory in order to build the package
-            current_path = os.getcwd()
-            try:
-                os.chdir(str(self._path))
-                self._run_build_command(setup)
-            finally:
-                os.chdir(current_path)
-
-            build_dir = self._path / "build"
-            lib = list(build_dir.glob("lib.*"))
-            if not lib:
-                # The result of building the extensions
-                # does not exist, this may due to conditional
-                # builds, so we assume that it's okay
-                return
-
-            lib = lib[0]
-
-            for pkg in lib.glob("**/*"):
-                if pkg.is_dir() or self.is_excluded(pkg):
-                    continue
-
-                rel_path = str(pkg.relative_to(lib))
-
-                if rel_path in wheel.namelist():
-                    continue
-
-                logger.debug(" - Adding: {}".format(rel_path))
-
-                self._add_file(wheel, pkg, rel_path)
+            with SdistBuilder(poetry=self._poetry).setup_py() as setup:
+                # We need to place ourselves in the temporary
+                # directory in order to build the package
+                current_path = os.getcwd()
+                try:
+                    os.chdir(str(self._path))
+                    self._run_build_command(setup)
+                finally:
+                    os.chdir(current_path)
+
+                build_dir = self._path / "build"
+                lib = list(build_dir.glob("lib.*"))
+                if not lib:
+                    # The result of building the extensions
+                    # does not exist, this may due to conditional
+                    # builds, so we assume that it's okay
+                    return
+
+                lib = lib[0]
+
+                for pkg in lib.glob("**/*"):
+                    if pkg.is_dir() or self.is_excluded(pkg):
+                        continue
+
+                    rel_path = str(pkg.relative_to(lib))
+
+                    if rel_path in wheel.namelist():
+                        continue
+
+                    logger.debug(" - Adding: {}".format(rel_path))
+
+                    self._add_file(wheel, pkg, rel_path)
 
     def _run_build_command(self, setup):
         subprocess.check_call(

tests/masonry/test_api.py

@@ -2,11 +2,15 @@
 from __future__ import unicode_literals
 
 import os
+import platform
+import sys
 import tarfile
 import zipfile
 
 from contextlib import contextmanager
 
+import pytest
+
 from poetry.core import __version__
 from poetry.core.masonry import api
 from poetry.core.utils._compat import Path
@@ -51,6 +55,27 @@ def test_build_wheel():
             assert "my_package-1.2.3.dist-info/METADATA" in namelist
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32"
+    and sys.version_info <= (3, 6)
+    or platform.python_implementation().lower() == "pypy",
+    reason="Disable test on Windows for Python <=3.6 and for PyPy",
+)
+def test_build_wheel_extended():
+    with temporary_directory() as tmp_dir, cwd(os.path.join(fixtures, "extended")):
+        filename = api.build_wheel(tmp_dir)
+
+        whl = Path(tmp_dir) / filename
+        assert whl.exists()
+
+        with zipfile.ZipFile(str(os.path.join(tmp_dir, filename))) as zip:
+            namelist = zip.namelist()
+
+            assert "extended-0.1.dist-info/RECORD" in namelist
+            assert "extended-0.1.dist-info/WHEEL" in namelist
+            assert "extended-0.1.dist-info/METADATA" in namelist
+
+
 def test_build_sdist():
     with temporary_directory() as tmp_dir, cwd(os.path.join(fixtures, "complete")):
         filename = api.build_sdist(tmp_dir)