Support earlier OS X versions in wheels

pip/pep425tags.py

@@ -1,5 +1,6 @@
 """Generate and work with PEP 425 Compatibility Tags."""
 
+import re
 import sys
 import warnings
 
@@ -10,6 +11,8 @@
     import distutils.sysconfig as sysconfig
 import distutils.util
 
+_osx_arch_pat = re.compile(r'(.+)_(\d+)_(\d+)_(.+)')
+
 
 def get_abbr_impl():
     """Return abbreviated implementation name."""
@@ -77,10 +80,37 @@ def get_supported(versions=None, noarch=False):
 
     if not noarch:
         arch = get_platform()
+        if sys.platform == 'darwin':
+            # support macosx-10.6-intel on macosx-10.9-x86_64
+            match = _osx_arch_pat.match(arch)
+            if match:
+                name, major, minor, actual_arch = match.groups()
+                actual_arches = [actual_arch]
+                if actual_arch in ('i386', 'ppc'):
+                    actual_arches.append('fat')
+                if actual_arch in ('i386', 'x86_64'):
+                    actual_arches.append('intel')
+                if actual_arch in ('i386', 'ppc', 'x86_64'):
+                    actual_arches.append('fat3')
+                if actual_arch in ('ppc64', 'x86_64'):
+                    actual_arches.append('fat64')
+                if actual_arch in ('i386', 'x86_64', 'intel', 'ppc', 'ppc64'):
+                    actual_arches.append('universal')
+                tpl = '{0}_{1}_%i_%s'.format(name, major)
+                arches = []
+                for m in range(int(minor) + 1):
+                    for a in actual_arches:
+                        arches.append(tpl % (m, a))
+            else:
+                # arch pattern didn't match (?!)
+                arches = [arch]
+        else:
+            arches = [arch]
 
         # Current version, current API (built specifically for our Python):
         for abi in abis:
-            supported.append(('%s%s' % (impl, versions[0]), abi, arch))
+            for arch in arches:
+                supported.append(('%s%s' % (impl, versions[0]), abi, arch))
 
     # No abi / arch, but requires our implementation:
     for i, version in enumerate(versions):

tests/unit/test_wheel.py

@@ -5,7 +5,7 @@
 from mock import patch, Mock
 
 from pip._vendor import pkg_resources
-from pip import wheel
+from pip import pep425tags, wheel
 from pip.exceptions import InvalidWheelFilename, UnsupportedWheel
 from pip.util import unpack_file
 
@@ -149,6 +149,90 @@ def test_not_supported_version(self):
         w = wheel.Wheel('simple-0.1-py2-none-any.whl')
         assert not w.supported(tags=[('py1', 'none', 'any')])
 
+    @patch('sys.platform', 'darwin')
+    @patch('pip.pep425tags.get_abbr_impl', lambda: 'cp')
+    @patch('pip.pep425tags.get_platform', lambda: 'macosx_10_9_intel')
+    def test_supported_osx_version(self):
+        """
+        Wheels built for OS X 10.6 are supported on 10.9
+        """
+        tags = pep425tags.get_supported(['27'], False)
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_6_intel.whl')
+        assert w.supported(tags=tags)
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_9_intel.whl')
+        assert w.supported(tags=tags)
+
+    @patch('sys.platform', 'darwin')
+    @patch('pip.pep425tags.get_abbr_impl', lambda: 'cp')
+    @patch('pip.pep425tags.get_platform', lambda: 'macosx_10_6_intel')
+    def test_not_supported_osx_version(self):
+        """
+        Wheels built for OS X 10.9 are not supported on 10.6
+        """
+        tags = pep425tags.get_supported(['27'], False)
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_9_intel.whl')
+        assert not w.supported(tags=tags)
+
+    @patch('sys.platform', 'darwin')
+    @patch('pip.pep425tags.get_abbr_impl', lambda: 'cp')
+    def test_supported_multiarch_darwin(self):
+        """
+        Multi-arch wheels (intel) are supported on components (i386, x86_64)
+        """
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_universal'):
+            universal = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_intel'):
+            intel = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_x86_64'):
+            x64 = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_i386'):
+            i386 = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_ppc'):
+            ppc = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_ppc64'):
+            ppc64 = pep425tags.get_supported(['27'], False)
+
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_5_intel.whl')
+        assert w.supported(tags=intel)
+        assert w.supported(tags=x64)
+        assert w.supported(tags=i386)
+        assert not w.supported(tags=universal)
+        assert not w.supported(tags=ppc)
+        assert not w.supported(tags=ppc64)
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_5_universal.whl')
+        assert w.supported(tags=universal)
+        assert w.supported(tags=intel)
+        assert w.supported(tags=x64)
+        assert w.supported(tags=i386)
+        assert w.supported(tags=ppc)
+        assert w.supported(tags=ppc64)
+
+    @patch('sys.platform', 'darwin')
+    @patch('pip.pep425tags.get_abbr_impl', lambda: 'cp')
+    def test_not_supported_multiarch_darwin(self):
+        """
+        Single-arch wheels (x86_64) are not supported on multi-arch (intel)
+        """
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_universal'):
+            universal = pep425tags.get_supported(['27'], False)
+        with patch('pip.pep425tags.get_platform',
+                   lambda: 'macosx_10_5_intel'):
+            intel = pep425tags.get_supported(['27'], False)
+
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_5_i386.whl')
+        assert not w.supported(tags=intel)
+        assert not w.supported(tags=universal)
+        w = wheel.Wheel('simple-0.1-cp27-none-macosx_10_5_x86_64.whl')
+        assert not w.supported(tags=intel)
+        assert not w.supported(tags=universal)
+
     def test_support_index_min(self):
         """
         Test results from `support_index_min`