122 lines
3.8 KiB
Python
122 lines
3.8 KiB
Python
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import os
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import sys
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from itertools import product, starmap
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import distutils.command.install_lib as orig
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class install_lib(orig.install_lib):
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"""Don't add compiled flags to filenames of non-Python files"""
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def run(self):
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self.build()
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outfiles = self.install()
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if outfiles is not None:
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# always compile, in case we have any extension stubs to deal with
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self.byte_compile(outfiles)
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def get_exclusions(self):
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"""
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Return a collections.Sized collections.Container of paths to be
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excluded for single_version_externally_managed installations.
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"""
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all_packages = (
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pkg
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for ns_pkg in self._get_SVEM_NSPs()
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for pkg in self._all_packages(ns_pkg)
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)
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excl_specs = product(all_packages, self._gen_exclusion_paths())
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return set(starmap(self._exclude_pkg_path, excl_specs))
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def _exclude_pkg_path(self, pkg, exclusion_path):
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"""
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Given a package name and exclusion path within that package,
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compute the full exclusion path.
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"""
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parts = pkg.split('.') + [exclusion_path]
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return os.path.join(self.install_dir, *parts)
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@staticmethod
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def _all_packages(pkg_name):
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"""
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>>> list(install_lib._all_packages('foo.bar.baz'))
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['foo.bar.baz', 'foo.bar', 'foo']
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"""
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while pkg_name:
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yield pkg_name
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pkg_name, sep, child = pkg_name.rpartition('.')
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def _get_SVEM_NSPs(self):
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"""
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Get namespace packages (list) but only for
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single_version_externally_managed installations and empty otherwise.
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"""
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# TODO: is it necessary to short-circuit here? i.e. what's the cost
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# if get_finalized_command is called even when namespace_packages is
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# False?
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if not self.distribution.namespace_packages:
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return []
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install_cmd = self.get_finalized_command('install')
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svem = install_cmd.single_version_externally_managed
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return self.distribution.namespace_packages if svem else []
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@staticmethod
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def _gen_exclusion_paths():
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"""
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Generate file paths to be excluded for namespace packages (bytecode
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cache files).
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"""
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# always exclude the package module itself
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yield '__init__.py'
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yield '__init__.pyc'
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yield '__init__.pyo'
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if not hasattr(sys, 'implementation'):
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return
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base = os.path.join('__pycache__', '__init__.' + sys.implementation.cache_tag)
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yield base + '.pyc'
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yield base + '.pyo'
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yield base + '.opt-1.pyc'
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yield base + '.opt-2.pyc'
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def copy_tree(
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self, infile, outfile,
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preserve_mode=1, preserve_times=1, preserve_symlinks=0, level=1
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):
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assert preserve_mode and preserve_times and not preserve_symlinks
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exclude = self.get_exclusions()
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if not exclude:
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return orig.install_lib.copy_tree(self, infile, outfile)
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# Exclude namespace package __init__.py* files from the output
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from setuptools.archive_util import unpack_directory
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from distutils import log
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outfiles = []
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def pf(src, dst):
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if dst in exclude:
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log.warn("Skipping installation of %s (namespace package)",
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dst)
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return False
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log.info("copying %s -> %s", src, os.path.dirname(dst))
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outfiles.append(dst)
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return dst
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unpack_directory(infile, outfile, pf)
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return outfiles
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def get_outputs(self):
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outputs = orig.install_lib.get_outputs(self)
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exclude = self.get_exclusions()
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if exclude:
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return [f for f in outputs if f not in exclude]
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return outputs
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