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annotate lib/python3.8/site-packages/setuptools/command/install_lib.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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1 import os
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2 import sys
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3 from itertools import product, starmap
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4 import distutils.command.install_lib as orig
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5
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6
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7 class install_lib(orig.install_lib):
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8 """Don't add compiled flags to filenames of non-Python files"""
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9
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10 def run(self):
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11 self.build()
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12 outfiles = self.install()
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13 if outfiles is not None:
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14 # always compile, in case we have any extension stubs to deal with
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15 self.byte_compile(outfiles)
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16
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17 def get_exclusions(self):
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18 """
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19 Return a collections.Sized collections.Container of paths to be
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20 excluded for single_version_externally_managed installations.
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21 """
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22 all_packages = (
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23 pkg
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24 for ns_pkg in self._get_SVEM_NSPs()
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25 for pkg in self._all_packages(ns_pkg)
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26 )
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27
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28 excl_specs = product(all_packages, self._gen_exclusion_paths())
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29 return set(starmap(self._exclude_pkg_path, excl_specs))
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30
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31 def _exclude_pkg_path(self, pkg, exclusion_path):
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32 """
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33 Given a package name and exclusion path within that package,
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34 compute the full exclusion path.
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35 """
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36 parts = pkg.split('.') + [exclusion_path]
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37 return os.path.join(self.install_dir, *parts)
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38
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39 @staticmethod
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40 def _all_packages(pkg_name):
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41 """
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42 >>> list(install_lib._all_packages('foo.bar.baz'))
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43 ['foo.bar.baz', 'foo.bar', 'foo']
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44 """
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45 while pkg_name:
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46 yield pkg_name
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47 pkg_name, sep, child = pkg_name.rpartition('.')
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48
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49 def _get_SVEM_NSPs(self):
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50 """
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51 Get namespace packages (list) but only for
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52 single_version_externally_managed installations and empty otherwise.
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53 """
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54 # TODO: is it necessary to short-circuit here? i.e. what's the cost
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55 # if get_finalized_command is called even when namespace_packages is
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56 # False?
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57 if not self.distribution.namespace_packages:
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58 return []
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59
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60 install_cmd = self.get_finalized_command('install')
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61 svem = install_cmd.single_version_externally_managed
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62
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63 return self.distribution.namespace_packages if svem else []
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64
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65 @staticmethod
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66 def _gen_exclusion_paths():
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67 """
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68 Generate file paths to be excluded for namespace packages (bytecode
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69 cache files).
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70 """
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71 # always exclude the package module itself
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72 yield '__init__.py'
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73
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74 yield '__init__.pyc'
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75 yield '__init__.pyo'
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76
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77 if not hasattr(sys, 'implementation'):
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78 return
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79
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80 base = os.path.join(
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81 '__pycache__', '__init__.' + sys.implementation.cache_tag)
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82 yield base + '.pyc'
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83 yield base + '.pyo'
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84 yield base + '.opt-1.pyc'
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85 yield base + '.opt-2.pyc'
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86
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87 def copy_tree(
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88 self, infile, outfile,
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89 preserve_mode=1, preserve_times=1, preserve_symlinks=0, level=1
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90 ):
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91 assert preserve_mode and preserve_times and not preserve_symlinks
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92 exclude = self.get_exclusions()
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93
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94 if not exclude:
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95 return orig.install_lib.copy_tree(self, infile, outfile)
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96
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97 # Exclude namespace package __init__.py* files from the output
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98
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99 from setuptools.archive_util import unpack_directory
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100 from distutils import log
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101
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102 outfiles = []
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103
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104 def pf(src, dst):
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105 if dst in exclude:
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106 log.warn("Skipping installation of %s (namespace package)",
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107 dst)
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108 return False
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109
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110 log.info("copying %s -> %s", src, os.path.dirname(dst))
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111 outfiles.append(dst)
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112 return dst
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113
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114 unpack_directory(infile, outfile, pf)
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115 return outfiles
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116
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117 def get_outputs(self):
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118 outputs = orig.install_lib.get_outputs(self)
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119 exclude = self.get_exclusions()
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120 if exclude:
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121 return [f for f in outputs if f not in exclude]
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122 return outputs