Force the --python-tag when autobuilding wheels

pip/pep425tags.py

@@ -55,6 +55,13 @@ def get_impl_version_info():
         return sys.version_info[0], sys.version_info[1]
 
 
+def get_impl_tag():
+    """
+    Returns the Tag for this specific implementation.
+    """
+    return "{0}{1}".format(get_abbr_impl(), get_impl_ver())
+
+
 def get_flag(var, fallback, expected=True, warn=True):
     """Use a fallback method for determining SOABI flags if the needed config
     var is unset or unavailable."""
@@ -198,3 +205,5 @@ def get_supported(versions=None, noarch=False):
 
 supported_tags = get_supported()
 supported_tags_noarch = get_supported(noarch=True)
+
+implementation_tag = get_impl_tag()

pip/wheel.py

@@ -662,14 +662,14 @@ def __init__(self, requirement_set, finder, build_options=None,
         self.build_options = build_options or []
         self.global_options = global_options or []
 
-    def _build_one(self, req, output_dir):
+    def _build_one(self, req, output_dir, python_tag=None):
         """Build one wheel.
 
         :return: The filename of the built wheel, or None if the build failed.
         """
         tempd = tempfile.mkdtemp('pip-wheel-')
         try:
-            if self.__build_one(req, tempd):
+            if self.__build_one(req, tempd, python_tag=python_tag):
                 try:
                     wheel_name = os.listdir(tempd)[0]
                     wheel_path = os.path.join(output_dir, wheel_name)
@@ -692,13 +692,17 @@ def _base_setup_args(self, req):
             "__file__, 'exec'))" % req.setup_py
         ] + list(self.global_options)
 
-    def __build_one(self, req, tempd):
+    def __build_one(self, req, tempd, python_tag=None):
         base_args = self._base_setup_args(req)
 
         logger.info('Running setup.py bdist_wheel for %s', req.name)
         logger.debug('Destination directory: %s', tempd)
         wheel_args = base_args + ['bdist_wheel', '-d', tempd] \
             + self.build_options
+
+        if python_tag is not None:
+            wheel_args += ["--python-tag", python_tag]
+
         try:
             call_subprocess(wheel_args, cwd=req.source_dir, show_stdout=False)
             return True
@@ -776,7 +780,9 @@ def build(self, autobuilding=False):
         with indent_log():
             build_success, build_failure = [], []
             for req in buildset:
+                python_tag = None
                 if autobuilding:
+                    python_tag = pep425tags.implementation_tag
                     output_dir = _cache_for_link(self._cache_root, req.link)
                     try:
                         ensure_dir(output_dir)
@@ -787,7 +793,10 @@ def build(self, autobuilding=False):
                         continue
                 else:
                     output_dir = self._wheel_dir
-                wheel_file = self._build_one(req, output_dir)
+                wheel_file = self._build_one(
+                    req, output_dir,
+                    python_tag=python_tag,
+                )
                 if wheel_file:
                     build_success.append(req)
                     if autobuilding:

tests/functional/test_install.py

@@ -7,6 +7,7 @@
 
 import pytest
 
+from pip import pep425tags
 from pip.utils import appdirs, rmtree
 from tests.lib import (pyversion, pyversion_tuple,
                        _create_test_package, _create_svn_repo, path_to_url)
@@ -737,7 +738,7 @@ def test_install_builds_wheels(script, data):
     assert expected in str(res), str(res)
     root = appdirs.user_cache_dir('pip')
     wheels = []
-    for top, dirs, files in os.walk(root):
+    for top, dirs, files in os.walk(os.path.join(root, "wheels")):
         wheels.extend(files)
     # and built wheels for upper and wheelbroken
     assert "Running setup.py bdist_wheel for upper" in str(res), str(res)
@@ -754,6 +755,10 @@ def test_install_builds_wheels(script, data):
     assert "Running setup.py install for requires-wheel" in str(res), str(res)
     # wheelbroken has to run install
     assert "Running setup.py install for wheelb" in str(res), str(res)
+    # We want to make sure we used the correct implementation tag
+    assert wheels == [
+        "Upper-2.0-{0}-none-any.whl".format(pep425tags.implementation_tag),
+    ]
 
 
 def test_install_no_binary_disables_building_wheels(script, data):