fix support for dependency_links/setup_requires in setup.cfg

setuptools/__init__.py

@@ -109,7 +109,10 @@ def _looks_like_package(path):
 
 find_packages = PackageFinder.find
 
-setup = distutils.core.setup
+def setup(**attrs):
+    if 'install_setup_requires' not in attrs:
+        attrs['install_setup_requires'] = True
+    distutils.core.setup(**attrs)
 
 _Command = monkey.get_unpatched(distutils.core.Command)
 

setuptools/dist.py

@@ -317,12 +317,16 @@ def __init__(self, attrs=None):
         self.dist_files = []
         self.src_root = attrs and attrs.pop("src_root", None)
         self.patch_missing_pkg_info(attrs)
+        self.dependency_links = []
+        self.setup_requires = []
         # Make sure we have any eggs needed to interpret 'attrs'
         if attrs is not None:
             self.dependency_links = attrs.pop('dependency_links', [])
             assert_string_list(self, 'dependency_links', self.dependency_links)
-        if attrs and 'setup_requires' in attrs:
-            self.fetch_build_eggs(attrs['setup_requires'])
+            self.setup_requires = attrs.pop('setup_requires', [])
+            assert_string_list(self, 'setup_requires', self.setup_requires)
+        if attrs and attrs.pop('install_setup_requires', False):
+            self.install_setup_requires()
         for ep in pkg_resources.iter_entry_points('distutils.setup_keywords'):
             vars(self).setdefault(ep.name, None)
         _Distribution.__init__(self, attrs)
@@ -416,6 +420,19 @@ def _clean_req(self, req):
         req.marker = None
         return req
 
+    def install_setup_requires(self):
+        # If dependency_links/setup_requires were not passed as
+        # arguments, then we need to honor setup.cfg's options.
+        if not self.dependency_links or not self.setup_requires:
+            dist = Distribution()
+            dist.parse_config_files()
+            if not self.setup_requires:
+                self.setup_requires = dist.setup_requires
+            if not self.dependency_links:
+                self.dependency_links = dist.dependency_links
+        if self.setup_requires:
+            self.fetch_build_eggs(self.setup_requires)
+
     def parse_config_files(self, filenames=None):
         """Parses configuration files from various levels
         and loads configuration.

setuptools/tests/test_easy_install.py

@@ -381,7 +381,15 @@ def create_sdist():
                 """))])
             yield dist_path
 
-    def test_setup_requires_overrides_version_conflict(self):
+    use_setup_cfg = (
+        (),
+        ('dependency_links',),
+        ('setup_requires',),
+        ('dependency_links', 'setup_requires'),
+    )
+
+    @pytest.mark.parametrize('use_setup_cfg', use_setup_cfg)
+    def test_setup_requires_overrides_version_conflict(self, use_setup_cfg):
         """
         Regression test for distribution issue 323:
         https://bitbucket.org/tarek/distribute/issues/323
@@ -397,7 +405,7 @@ def test_setup_requires_overrides_version_conflict(self):
 
         with contexts.save_pkg_resources_state():
             with contexts.tempdir() as temp_dir:
-                test_pkg = create_setup_requires_package(temp_dir)
+                test_pkg = create_setup_requires_package(temp_dir, use_setup_cfg=use_setup_cfg)
                 test_setup_py = os.path.join(test_pkg, 'setup.py')
                 with contexts.quiet() as (stdout, stderr):
                     # Don't even need to install the package, just
@@ -408,7 +416,8 @@ def test_setup_requires_overrides_version_conflict(self):
                 assert len(lines) > 0
                 assert lines[-1].strip(), 'test_pkg'
 
-    def test_setup_requires_override_nspkg(self):
+    @pytest.mark.parametrize('use_setup_cfg', use_setup_cfg)
+    def test_setup_requires_override_nspkg(self, use_setup_cfg):
         """
         Like ``test_setup_requires_overrides_version_conflict`` but where the
         ``setup_requires`` package is part of a namespace package that has
@@ -446,7 +455,8 @@ def test_setup_requires_override_nspkg(self):
                 """)
 
                 test_pkg = create_setup_requires_package(
-                    temp_dir, 'foo.bar', '0.2', make_nspkg_sdist, template)
+                    temp_dir, 'foo.bar', '0.2', make_nspkg_sdist, template,
+                    use_setup_cfg=use_setup_cfg)
 
                 test_setup_py = os.path.join(test_pkg, 'setup.py')
 
@@ -532,7 +542,7 @@ def make_sdist(dist_path, files):
 
 def create_setup_requires_package(path, distname='foobar', version='0.1',
                                   make_package=make_trivial_sdist,
-                                  setup_py_template=None):
+                                  setup_py_template=None, use_setup_cfg={}):
     """Creates a source tree under path for a trivial test package that has a
     single requirement in setup_requires--a tarball for that requirement is
     also created and added to the dependency_links argument.
@@ -549,9 +559,21 @@ def create_setup_requires_package(path, distname='foobar', version='0.1',
     }
 
     test_pkg = os.path.join(path, 'test_pkg')
-    test_setup_py = os.path.join(test_pkg, 'setup.py')
     os.mkdir(test_pkg)
 
+    if use_setup_cfg:
+        test_setup_cfg = os.path.join(test_pkg, 'setup.cfg')
+        test_setup_cfg_lines = ['[options]']
+        for name in use_setup_cfg:
+            value = test_setup_attrs.pop(name)
+            test_setup_cfg_lines.append('%s: %s' % (
+                name, ';'.join(value)
+            ))
+        with open(test_setup_cfg, 'w') as f:
+            f.write('\n'.join(test_setup_cfg_lines))
+
+    test_setup_py = os.path.join(test_pkg, 'setup.py')
+
     if setup_py_template is None:
         setup_py_template = DALS("""\
             import setuptools