fix `install_requires` handling of extras

Internally move requirements in `install_requires` that are using
extras to `extras_require` so those extras don't get stripped when
building wheels.

setuptools/dist.py

@@ -358,7 +358,7 @@ class Distribution(Distribution_parse_config_files, _Distribution):
         Fix environment markers in `install_requires` and `extras_require`.
 
         - move requirements in `install_requires` that are using environment
-          markers to `extras_require`.
+          markers or extras to `extras_require`.
         - convert requirements in `extras_require` of the form
           `"extra": ["barbazquux; {marker}"]` to
           `"extra:{marker}": ["barbazquux"]`.
@@ -379,11 +379,17 @@ class Distribution(Distribution_parse_config_files, _Distribution):
             getattr(self, 'install_requires', None) or ()
         ):
             marker = r.marker
-            if not marker:
+            extras = r.extras
+            if not marker and not extras:
                 install_requires.append(r)
                 continue
+            r.extras = ()
             r.marker = None
-            extras_require[':' + str(marker)].append(r)
+            for e in extras or ('',):
+                section = e
+                if marker:
+                    section += ':' + str(marker)
+                extras_require[section].append(r)
         self.extras_require = dict(
             (k, [str(r) for r in v])
             for k, v in extras_require.items()

setuptools/tests/test_egg_info.py

@@ -188,7 +188,7 @@ class TestEggInfo(object):
     )
     invalid_marker = "<=>++"
 
-    def test_install_requires_with_markers(self, tmpdir_cwd, env):
+    def test_install_requires_with_marker(self, tmpdir_cwd, env):
         tmpl = 'install_requires=["barbazquux;{marker}"],'
         req = tmpl.format(marker=self.mismatch_marker)
         self._setup_script_with_requires(req)
@@ -204,6 +204,37 @@ class TestEggInfo(object):
         assert install_requires.lstrip() == expected_requires
         assert glob.glob(os.path.join(env.paths['lib'], 'barbazquux*')) == []
 
+    def test_install_requires_with_extra(self, tmpdir_cwd, env):
+        req = 'install_requires=["barbazquux [test]"],'
+        self._setup_script_with_requires(req)
+        self._run_install_command(tmpdir_cwd, env)
+        egg_info_dir = self._find_egg_info_files(env.paths['lib']).base
+        requires_txt = os.path.join(egg_info_dir, 'requires.txt')
+        with open(requires_txt) as fp:
+            install_requires = fp.read()
+        expected_requires = DALS('''
+             [test]
+             barbazquux
+             ''')
+        assert install_requires.lstrip() == expected_requires
+        assert glob.glob(os.path.join(env.paths['lib'], 'barbazquux*')) == []
+
+    def test_install_requires_with_extra_and_marker(self, tmpdir_cwd, env):
+        tmpl = 'install_requires=["barbazquux [test]; {marker}"],'
+        req = tmpl.format(marker=self.mismatch_marker)
+        self._setup_script_with_requires(req)
+        self._run_install_command(tmpdir_cwd, env)
+        egg_info_dir = self._find_egg_info_files(env.paths['lib']).base
+        requires_txt = os.path.join(egg_info_dir, 'requires.txt')
+        with open(requires_txt) as fp:
+            install_requires = fp.read()
+        expected_requires = DALS('''
+             [test:{marker}]
+             barbazquux
+             ''').format(marker=self.mismatch_marker_alternate)
+        assert install_requires.lstrip() == expected_requires
+        assert glob.glob(os.path.join(env.paths['lib'], 'barbazquux*')) == []
+
     def test_setup_requires_with_markers(self, tmpdir_cwd, env):
         tmpl = 'setup_requires=["barbazquux;{marker}"],'
         req = tmpl.format(marker=self.mismatch_marker)