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comparison 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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-1:000000000000 0:9e54283cc701
1 """Build metadata for a project using PEP 517 hooks.
2 """
3 import argparse
4 import logging
5 import os
6 import shutil
7 import functools
8
9 try:
10 import importlib.metadata as imp_meta
11 except ImportError:
12 import importlib_metadata as imp_meta
13
14 try:
15 from zipfile import Path
16 except ImportError:
17 from zipp import Path
18
19 from .envbuild import BuildEnvironment
20 from .wrappers import Pep517HookCaller, quiet_subprocess_runner
21 from .dirtools import tempdir, mkdir_p, dir_to_zipfile
22 from .build import validate_system, load_system, compat_system
23
24 log = logging.getLogger(__name__)
25
26
27 def _prep_meta(hooks, env, dest):
28 reqs = hooks.get_requires_for_build_wheel({})
29 log.info('Got build requires: %s', reqs)
30
31 env.pip_install(reqs)
32 log.info('Installed dynamic build dependencies')
33
34 with tempdir() as td:
35 log.info('Trying to build metadata in %s', td)
36 filename = hooks.prepare_metadata_for_build_wheel(td, {})
37 source = os.path.join(td, filename)
38 shutil.move(source, os.path.join(dest, os.path.basename(filename)))
39
40
41 def build(source_dir='.', dest=None, system=None):
42 system = system or load_system(source_dir)
43 dest = os.path.join(source_dir, dest or 'dist')
44 mkdir_p(dest)
45 validate_system(system)
46 hooks = Pep517HookCaller(
47 source_dir, system['build-backend'], system.get('backend-path')
48 )
49
50 with hooks.subprocess_runner(quiet_subprocess_runner):
51 with BuildEnvironment() as env:
52 env.pip_install(system['requires'])
53 _prep_meta(hooks, env, dest)
54
55
56 def build_as_zip(builder=build):
57 with tempdir() as out_dir:
58 builder(dest=out_dir)
59 return dir_to_zipfile(out_dir)
60
61
62 def load(root):
63 """
64 Given a source directory (root) of a package,
65 return an importlib.metadata.Distribution object
66 with metadata build from that package.
67 """
68 root = os.path.expanduser(root)
69 system = compat_system(root)
70 builder = functools.partial(build, source_dir=root, system=system)
71 path = Path(build_as_zip(builder))
72 return imp_meta.PathDistribution(path)
73
74
75 parser = argparse.ArgumentParser()
76 parser.add_argument(
77 'source_dir',
78 help="A directory containing pyproject.toml",
79 )
80 parser.add_argument(
81 '--out-dir', '-o',
82 help="Destination in which to save the builds relative to source dir",
83 )
84
85
86 def main():
87 args = parser.parse_args()
88 build(args.source_dir, args.out_dir)
89
90
91 if __name__ == '__main__':
92 main()