1 files changed, 2 insertions, 59 deletions
diff --git a/setuptools/command/install_egg_info.py b/setuptools/command/install_egg_info.py
index 7834e107..edc4718b 100755
--- a/setuptools/command/install_egg_info.py
+++ b/setuptools/command/install_egg_info.py
@@ -1,14 +1,13 @@
 from distutils import log, dir_util
 import os
 
-from setuptools.extern.six.moves import map
-
 from setuptools import Command
+from setuptools import namespaces
 from setuptools.archive_util import unpack_archive
 import pkg_resources
 
 
-class install_egg_info(Command):
+class install_egg_info(namespaces.Installer, Command):
     """Install an .egg-info directory for the package"""
 
     description = "Install an .egg-info directory for the package"
@@ -61,59 +60,3 @@ class install_egg_info(Command):
             return dst
 
         unpack_archive(self.source, self.target, skimmer)
-
-    def install_namespaces(self):
-        nsp = self._get_all_ns_packages()
-        if not nsp:
-            return
-        filename, ext = os.path.splitext(self.target)
-        filename += '-nspkg.pth'
-        self.outputs.append(filename)
-        log.info("Installing %s", filename)
-        lines = map(self._gen_nspkg_line, nsp)
-
-        if self.dry_run:
-            # always generate the lines, even in dry run
-            list(lines)
-            return
-
-        with open(filename, 'wt') as f:
-            f.writelines(lines)
-
-    _nspkg_tmpl = (
-        "import sys, types, os",
-        "pep420 = sys.version_info > (3, 3)",
-        "p = os.path.join(sys._getframe(1).f_locals['sitedir'], *%(pth)r)",
-        "ie = os.path.exists(os.path.join(p,'__init__.py'))",
-        "m = not ie and not pep420 and "
-            "sys.modules.setdefault(%(pkg)r, types.ModuleType(%(pkg)r))",
-        "mp = (m or []) and m.__dict__.setdefault('__path__',[])",
-        "(p not in mp) and mp.append(p)",
-    )
-    "lines for the namespace installer"
-
-    _nspkg_tmpl_multi = (
-        'm and setattr(sys.modules[%(parent)r], %(child)r, m)',
-    )
-    "additional line(s) when a parent package is indicated"
-
-    @classmethod
-    def _gen_nspkg_line(cls, pkg):
-        # ensure pkg is not a unicode string under Python 2.7
-        pkg = str(pkg)
-        pth = tuple(pkg.split('.'))
-        tmpl_lines = cls._nspkg_tmpl
-        parent, sep, child = pkg.rpartition('.')
-        if parent:
-            tmpl_lines += cls._nspkg_tmpl_multi
-        return ';'.join(tmpl_lines) % locals() + '\n'
-
-    def _get_all_ns_packages(self):
-        """Return sorted list of all package namespaces"""
-        nsp = set()
-        for pkg in self.distribution.namespace_packages or []:
-            pkg = pkg.split('.')
-            while pkg:
-                nsp.add('.'.join(pkg))
-                pkg.pop()
-        return sorted(nsp)