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annotate lib/python3.8/site-packages/pip/_vendor/pep517/meta.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 """Build metadata for a project using PEP 517 hooks.
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2 """
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3 import argparse
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4 import logging
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5 import os
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6 import shutil
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7 import functools
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8
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9 try:
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10 import importlib.metadata as imp_meta
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11 except ImportError:
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12 import importlib_metadata as imp_meta
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13
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14 try:
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15 from zipfile import Path
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16 except ImportError:
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17 from zipp import Path
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18
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19 from .envbuild import BuildEnvironment
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20 from .wrappers import Pep517HookCaller, quiet_subprocess_runner
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21 from .dirtools import tempdir, mkdir_p, dir_to_zipfile
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22 from .build import validate_system, load_system, compat_system
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23
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24 log = logging.getLogger(__name__)
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25
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26
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27 def _prep_meta(hooks, env, dest):
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28 reqs = hooks.get_requires_for_build_wheel({})
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29 log.info('Got build requires: %s', reqs)
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30
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31 env.pip_install(reqs)
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32 log.info('Installed dynamic build dependencies')
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33
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34 with tempdir() as td:
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35 log.info('Trying to build metadata in %s', td)
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36 filename = hooks.prepare_metadata_for_build_wheel(td, {})
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37 source = os.path.join(td, filename)
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38 shutil.move(source, os.path.join(dest, os.path.basename(filename)))
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39
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40
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41 def build(source_dir='.', dest=None, system=None):
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42 system = system or load_system(source_dir)
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43 dest = os.path.join(source_dir, dest or 'dist')
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44 mkdir_p(dest)
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45 validate_system(system)
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46 hooks = Pep517HookCaller(
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47 source_dir, system['build-backend'], system.get('backend-path')
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48 )
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49
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50 with hooks.subprocess_runner(quiet_subprocess_runner):
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51 with BuildEnvironment() as env:
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52 env.pip_install(system['requires'])
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53 _prep_meta(hooks, env, dest)
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54
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55
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56 def build_as_zip(builder=build):
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57 with tempdir() as out_dir:
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58 builder(dest=out_dir)
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59 return dir_to_zipfile(out_dir)
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60
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61
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62 def load(root):
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63 """
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64 Given a source directory (root) of a package,
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65 return an importlib.metadata.Distribution object
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66 with metadata build from that package.
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67 """
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68 root = os.path.expanduser(root)
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69 system = compat_system(root)
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70 builder = functools.partial(build, source_dir=root, system=system)
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71 path = Path(build_as_zip(builder))
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72 return imp_meta.PathDistribution(path)
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73
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74
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75 parser = argparse.ArgumentParser()
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76 parser.add_argument(
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77 'source_dir',
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78 help="A directory containing pyproject.toml",
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79 )
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80 parser.add_argument(
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81 '--out-dir', '-o',
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82 help="Destination in which to save the builds relative to source dir",
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83 )
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84
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85
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86 def main():
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87 args = parser.parse_args()
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88 build(args.source_dir, args.out_dir)
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89
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90
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91 if __name__ == '__main__':
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92 main()