Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/virtualenv/seed/wheels/acquire.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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1 """Bootstrap"""
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2 from __future__ import absolute_import, unicode_literals
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3
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4 import logging
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5 import os
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6 import sys
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7 from operator import eq, lt
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8
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9 import six
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10
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11 from virtualenv.util.path import Path
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12 from virtualenv.util.six import ensure_str
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13 from virtualenv.util.subprocess import Popen, subprocess
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14
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15 from .bundle import from_bundle
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16 from .util import Version, Wheel, discover_wheels
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17
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18
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19 def get_wheel(distribution, version, for_py_version, search_dirs, download, app_data, do_periodic_update):
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20 """
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21 Get a wheel with the given distribution-version-for_py_version trio, by using the extra search dir + download
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22 """
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23 # not all wheels are compatible with all python versions, so we need to py version qualify it
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24 # 1. acquire from bundle
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25 wheel = from_bundle(distribution, version, for_py_version, search_dirs, app_data, do_periodic_update)
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26
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27 # 2. download from the internet
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28 if version not in Version.non_version and download:
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29 wheel = download_wheel(
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30 distribution=distribution,
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31 version_spec=Version.as_version_spec(version),
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32 for_py_version=for_py_version,
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33 search_dirs=search_dirs,
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34 app_data=app_data,
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35 to_folder=app_data.house,
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36 )
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37 return wheel
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38
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39
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40 def download_wheel(distribution, version_spec, for_py_version, search_dirs, app_data, to_folder):
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41 to_download = "{}{}".format(distribution, version_spec or "")
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42 logging.debug("download wheel %s %s to %s", to_download, for_py_version, to_folder)
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43 cmd = [
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44 sys.executable,
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45 "-m",
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46 "pip",
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47 "download",
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48 "--progress-bar",
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49 "off",
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50 "--disable-pip-version-check",
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51 "--only-binary=:all:",
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52 "--no-deps",
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53 "--python-version",
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54 for_py_version,
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55 "-d",
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56 str(to_folder),
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57 to_download,
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58 ]
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59 # pip has no interface in python - must be a new sub-process
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60 env = pip_wheel_env_run(search_dirs, app_data)
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61 process = Popen(cmd, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
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62 out, err = process.communicate()
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63 if process.returncode != 0:
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64 kwargs = {"output": out}
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65 if six.PY2:
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66 kwargs["output"] += err
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67 else:
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68 kwargs["stderr"] = err
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69 raise subprocess.CalledProcessError(process.returncode, cmd, **kwargs)
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70 result = _find_downloaded_wheel(distribution, version_spec, for_py_version, to_folder, out)
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71 logging.debug("downloaded wheel %s", result.name)
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72 return result
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73
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74
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75 def _find_downloaded_wheel(distribution, version_spec, for_py_version, to_folder, out):
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76 for line in out.splitlines():
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77 line = line.lstrip()
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78 for marker in ("Saved ", "File was already downloaded "):
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79 if line.startswith(marker):
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80 return Wheel(Path(line[len(marker) :]).absolute())
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81 # if for some reason the output does not match fallback to latest version with that spec
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82 return find_compatible_in_house(distribution, version_spec, for_py_version, to_folder)
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83
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84
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85 def find_compatible_in_house(distribution, version_spec, for_py_version, in_folder):
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86 wheels = discover_wheels(in_folder, distribution, None, for_py_version)
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87 start, end = 0, len(wheels)
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88 if version_spec is not None:
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89 if version_spec.startswith("<"):
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90 from_pos, op = 1, lt
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91 elif version_spec.startswith("=="):
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92 from_pos, op = 2, eq
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93 else:
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94 raise ValueError(version_spec)
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95 version = Wheel.as_version_tuple(version_spec[from_pos:])
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96 start = next((at for at, w in enumerate(wheels) if op(w.version_tuple, version)), len(wheels))
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97
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98 return None if start == end else wheels[start]
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99
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100
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101 def pip_wheel_env_run(search_dirs, app_data):
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102 for_py_version = "{}.{}".format(*sys.version_info[0:2])
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103 env = os.environ.copy()
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104 env.update(
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105 {
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106 ensure_str(k): str(v) # python 2 requires these to be string only (non-unicode)
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107 for k, v in {"PIP_USE_WHEEL": "1", "PIP_USER": "0", "PIP_NO_INPUT": "1"}.items()
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108 },
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109 )
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110 wheel = get_wheel(
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111 distribution="pip",
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112 version=None,
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113 for_py_version=for_py_version,
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114 search_dirs=search_dirs,
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115 download=False,
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116 app_data=app_data,
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117 do_periodic_update=False,
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118 )
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119 if wheel is None:
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120 raise RuntimeError("could not find the embedded pip")
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121 env[str("PYTHONPATH")] = str(wheel.path)
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122 return env