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import os
import sys
from itertools import product, starmap
import distutils.command.install_lib as orig
class install_lib(orig.install_lib):
"""Don't add compiled flags to filenames of non-Python files"""
def initialize_options(self):
orig.install_lib.initialize_options(self)
self.multiarch = None
self.install_layout = None
def finalize_options(self):
orig.install_lib.finalize_options(self)
self.set_undefined_options('install',('install_layout','install_layout'))
if self.install_layout == 'deb' and sys.version_info[:2] >= (3, 3):
import sysconfig
self.multiarch = sysconfig.get_config_var('MULTIARCH')
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):
"""
Return a collections.Sized collections.Container of paths to be
excluded for single_version_externally_managed installations.
"""
all_packages = (
pkg
for ns_pkg in self._get_SVEM_NSPs()
for pkg in self._all_packages(ns_pkg)
)
excl_specs = product(all_packages, self._gen_exclusion_paths())
return set(starmap(self._exclude_pkg_path, excl_specs))
def _exclude_pkg_path(self, pkg, exclusion_path):
"""
Given a package name and exclusion path within that package,
compute the full exclusion path.
"""
parts = pkg.split('.') + [exclusion_path]
return os.path.join(self.install_dir, *parts)
@staticmethod
def _all_packages(pkg_name):
"""
>>> list(install_lib._all_packages('foo.bar.baz'))
['foo.bar.baz', 'foo.bar', 'foo']
"""
while pkg_name:
yield pkg_name
pkg_name, sep, child = pkg_name.rpartition('.')
def _get_SVEM_NSPs(self):
"""
Get namespace packages (list) but only for
single_version_externally_managed installations and empty otherwise.
"""
# TODO: is it necessary to short-circuit here? i.e. what's the cost
# if get_finalized_command is called even when namespace_packages is
# False?
if not self.distribution.namespace_packages:
return []
install_cmd = self.get_finalized_command('install')
svem = install_cmd.single_version_externally_managed
return self.distribution.namespace_packages if svem else []
@staticmethod
def _gen_exclusion_paths():
"""
Generate file paths to be excluded for namespace packages (bytecode
cache files).
"""
# always exclude the package module itself
yield '__init__.py'
yield '__init__.pyc'
yield '__init__.pyo'
if not hasattr(sys, 'implementation'):
return
base = os.path.join('__pycache__', '__init__.' + sys.implementation.cache_tag)
yield base + '.pyc'
yield base + '.pyo'
yield base + '.opt-1.pyc'
yield base + '.opt-2.pyc'
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:
import distutils.dir_util
distutils.dir_util._multiarch = self.multiarch
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 = []
if self.multiarch:
import sysconfig
ext_suffix = sysconfig.get_config_var ('EXT_SUFFIX')
if ext_suffix.endswith(self.multiarch + ext_suffix[-3:]):
new_suffix = None
else:
new_suffix = "%s-%s%s" % (ext_suffix[:-3], self.multiarch, ext_suffix[-3:])
def pf(src, dst):
if dst in exclude:
log.warn("Skipping installation of %s (namespace package)", dst)
return False
if self.multiarch and new_suffix and dst.endswith(ext_suffix) and not dst.endswith(new_suffix):
dst = dst.replace(ext_suffix, new_suffix)
log.info("renaming extension to %s", os.path.basename(dst))
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