Fix python env issues.

PythonHome/Lib/site-packages/setuptools/command/install_lib.py

@@ -0,0 +1,65 @@
+import distutils.command.install_lib as orig
+import os
+
+
+class install_lib(orig.install_lib):
+    """Don't add compiled flags to filenames of non-Python files"""
+
+    def run(self):
+        self.build()
+        outfiles = self.install()
+        if outfiles is not None:
+            # always compile, in case we have any extension stubs to deal with
+            self.byte_compile(outfiles)
+
+    def get_exclusions(self):
+        exclude = {}
+        nsp = self.distribution.namespace_packages
+        svem = (nsp and self.get_finalized_command('install')
+                .single_version_externally_managed)
+        if svem:
+            for pkg in nsp:
+                parts = pkg.split('.')
+                while parts:
+                    pkgdir = os.path.join(self.install_dir, *parts)
+                    for f in '__init__.py', '__init__.pyc', '__init__.pyo':
+                        exclude[os.path.join(pkgdir, f)] = 1
+                    parts.pop()
+        return exclude
+
+    def copy_tree(
+            self, infile, outfile,
+            preserve_mode=1, preserve_times=1, preserve_symlinks=0, level=1
+    ):
+        assert preserve_mode and preserve_times and not preserve_symlinks
+        exclude = self.get_exclusions()
+
+        if not exclude:
+            return orig.install_lib.copy_tree(self, infile, outfile)
+
+        # Exclude namespace package __init__.py* files from the output
+
+        from setuptools.archive_util import unpack_directory
+        from distutils import log
+
+        outfiles = []
+
+        def pf(src, dst):
+            if dst in exclude:
+                log.warn("Skipping installation of %s (namespace package)",
+                         dst)
+                return False
+
+            log.info("copying %s -> %s", src, os.path.dirname(dst))
+            outfiles.append(dst)
+            return dst
+
+        unpack_directory(infile, outfile, pf)
+        return outfiles
+
+    def get_outputs(self):
+        outputs = orig.install_lib.get_outputs(self)
+        exclude = self.get_exclusions()
+        if exclude:
+            return [f for f in outputs if f not in exclude]
+        return outputs