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comparison lib/python3.8/site-packages/setuptools/installer.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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-1:000000000000 0:9e54283cc701
1 import glob
2 import os
3 import subprocess
4 import sys
5 from distutils import log
6 from distutils.errors import DistutilsError
7
8 import pkg_resources
9 from setuptools.command.easy_install import easy_install
10 from setuptools.extern import six
11 from setuptools.wheel import Wheel
12
13 from .py31compat import TemporaryDirectory
14
15
16 def _fixup_find_links(find_links):
17 """Ensure find-links option end-up being a list of strings."""
18 if isinstance(find_links, six.string_types):
19 return find_links.split()
20 assert isinstance(find_links, (tuple, list))
21 return find_links
22
23
24 def _legacy_fetch_build_egg(dist, req):
25 """Fetch an egg needed for building.
26
27 Legacy path using EasyInstall.
28 """
29 tmp_dist = dist.__class__({'script_args': ['easy_install']})
30 opts = tmp_dist.get_option_dict('easy_install')
31 opts.clear()
32 opts.update(
33 (k, v)
34 for k, v in dist.get_option_dict('easy_install').items()
35 if k in (
36 # don't use any other settings
37 'find_links', 'site_dirs', 'index_url',
38 'optimize', 'site_dirs', 'allow_hosts',
39 ))
40 if dist.dependency_links:
41 links = dist.dependency_links[:]
42 if 'find_links' in opts:
43 links = _fixup_find_links(opts['find_links'][1]) + links
44 opts['find_links'] = ('setup', links)
45 install_dir = dist.get_egg_cache_dir()
46 cmd = easy_install(
47 tmp_dist, args=["x"], install_dir=install_dir,
48 exclude_scripts=True,
49 always_copy=False, build_directory=None, editable=False,
50 upgrade=False, multi_version=True, no_report=True, user=False
51 )
52 cmd.ensure_finalized()
53 return cmd.easy_install(req)
54
55
56 def fetch_build_egg(dist, req):
57 """Fetch an egg needed for building.
58
59 Use pip/wheel to fetch/build a wheel."""
60 # Check pip is available.
61 try:
62 pkg_resources.get_distribution('pip')
63 except pkg_resources.DistributionNotFound:
64 dist.announce(
65 'WARNING: The pip package is not available, falling back '
66 'to EasyInstall for handling setup_requires/test_requires; '
67 'this is deprecated and will be removed in a future version.',
68 log.WARN
69 )
70 return _legacy_fetch_build_egg(dist, req)
71 # Warn if wheel is not.
72 try:
73 pkg_resources.get_distribution('wheel')
74 except pkg_resources.DistributionNotFound:
75 dist.announce('WARNING: The wheel package is not available.', log.WARN)
76 # Ignore environment markers; if supplied, it is required.
77 req = strip_marker(req)
78 # Take easy_install options into account, but do not override relevant
79 # pip environment variables (like PIP_INDEX_URL or PIP_QUIET); they'll
80 # take precedence.
81 opts = dist.get_option_dict('easy_install')
82 if 'allow_hosts' in opts:
83 raise DistutilsError('the `allow-hosts` option is not supported '
84 'when using pip to install requirements.')
85 if 'PIP_QUIET' in os.environ or 'PIP_VERBOSE' in os.environ:
86 quiet = False
87 else:
88 quiet = True
89 if 'PIP_INDEX_URL' in os.environ:
90 index_url = None
91 elif 'index_url' in opts:
92 index_url = opts['index_url'][1]
93 else:
94 index_url = None
95 if 'find_links' in opts:
96 find_links = _fixup_find_links(opts['find_links'][1])[:]
97 else:
98 find_links = []
99 if dist.dependency_links:
100 find_links.extend(dist.dependency_links)
101 eggs_dir = os.path.realpath(dist.get_egg_cache_dir())
102 environment = pkg_resources.Environment()
103 for egg_dist in pkg_resources.find_distributions(eggs_dir):
104 if egg_dist in req and environment.can_add(egg_dist):
105 return egg_dist
106 with TemporaryDirectory() as tmpdir:
107 cmd = [
108 sys.executable, '-m', 'pip',
109 '--disable-pip-version-check',
110 'wheel', '--no-deps',
111 '-w', tmpdir,
112 ]
113 if quiet:
114 cmd.append('--quiet')
115 if index_url is not None:
116 cmd.extend(('--index-url', index_url))
117 if find_links is not None:
118 for link in find_links:
119 cmd.extend(('--find-links', link))
120 # If requirement is a PEP 508 direct URL, directly pass
121 # the URL to pip, as `req @ url` does not work on the
122 # command line.
123 if req.url:
124 cmd.append(req.url)
125 else:
126 cmd.append(str(req))
127 try:
128 subprocess.check_call(cmd)
129 except subprocess.CalledProcessError as e:
130 raise DistutilsError(str(e))
131 wheel = Wheel(glob.glob(os.path.join(tmpdir, '*.whl'))[0])
132 dist_location = os.path.join(eggs_dir, wheel.egg_name())
133 wheel.install_as_egg(dist_location)
134 dist_metadata = pkg_resources.PathMetadata(
135 dist_location, os.path.join(dist_location, 'EGG-INFO'))
136 dist = pkg_resources.Distribution.from_filename(
137 dist_location, metadata=dist_metadata)
138 return dist
139
140
141 def strip_marker(req):
142 """
143 Return a new requirement without the environment marker to avoid
144 calling pip with something like `babel; extra == "i18n"`, which
145 would always be ignored.
146 """
147 # create a copy to avoid mutating the input
148 req = pkg_resources.Requirement.parse(str(req))
149 req.marker = None
150 return req