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comparison lib/python3.8/site-packages/pip/_internal/distributions/sdist.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 logging
2
3 from pip._internal.build_env import BuildEnvironment
4 from pip._internal.distributions.base import AbstractDistribution
5 from pip._internal.exceptions import InstallationError
6 from pip._internal.utils.subprocess import runner_with_spinner_message
7 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
8
9 if MYPY_CHECK_RUNNING:
10 from typing import Set, Tuple
11
12 from pip._vendor.pkg_resources import Distribution
13 from pip._internal.index.package_finder import PackageFinder
14
15
16 logger = logging.getLogger(__name__)
17
18
19 class SourceDistribution(AbstractDistribution):
20 """Represents a source distribution.
21
22 The preparation step for these needs metadata for the packages to be
23 generated, either using PEP 517 or using the legacy `setup.py egg_info`.
24 """
25
26 def get_pkg_resources_distribution(self):
27 # type: () -> Distribution
28 return self.req.get_dist()
29
30 def prepare_distribution_metadata(self, finder, build_isolation):
31 # type: (PackageFinder, bool) -> None
32 # Load pyproject.toml, to determine whether PEP 517 is to be used
33 self.req.load_pyproject_toml()
34
35 # Set up the build isolation, if this requirement should be isolated
36 should_isolate = self.req.use_pep517 and build_isolation
37 if should_isolate:
38 self._setup_isolation(finder)
39
40 self.req.prepare_metadata()
41
42 def _setup_isolation(self, finder):
43 # type: (PackageFinder) -> None
44 def _raise_conflicts(conflicting_with, conflicting_reqs):
45 # type: (str, Set[Tuple[str, str]]) -> None
46 format_string = (
47 "Some build dependencies for {requirement} "
48 "conflict with {conflicting_with}: {description}."
49 )
50 error_message = format_string.format(
51 requirement=self.req,
52 conflicting_with=conflicting_with,
53 description=', '.join(
54 '{} is incompatible with {}'.format(installed, wanted)
55 for installed, wanted in sorted(conflicting)
56 )
57 )
58 raise InstallationError(error_message)
59
60 # Isolate in a BuildEnvironment and install the build-time
61 # requirements.
62 pyproject_requires = self.req.pyproject_requires
63 assert pyproject_requires is not None
64
65 self.req.build_env = BuildEnvironment()
66 self.req.build_env.install_requirements(
67 finder, pyproject_requires, 'overlay',
68 "Installing build dependencies"
69 )
70 conflicting, missing = self.req.build_env.check_requirements(
71 self.req.requirements_to_check
72 )
73 if conflicting:
74 _raise_conflicts("PEP 517/518 supported requirements",
75 conflicting)
76 if missing:
77 logger.warning(
78 "Missing build requirements in pyproject.toml for %s.",
79 self.req,
80 )
81 logger.warning(
82 "The project does not specify a build backend, and "
83 "pip cannot fall back to setuptools without %s.",
84 " and ".join(map(repr, sorted(missing)))
85 )
86 # Install any extra build dependencies that the backend requests.
87 # This must be done in a second pass, as the pyproject.toml
88 # dependencies must be installed before we can call the backend.
89 with self.req.build_env:
90 runner = runner_with_spinner_message(
91 "Getting requirements to build wheel"
92 )
93 backend = self.req.pep517_backend
94 assert backend is not None
95 with backend.subprocess_runner(runner):
96 reqs = backend.get_requires_for_build_wheel()
97
98 conflicting, missing = self.req.build_env.check_requirements(reqs)
99 if conflicting:
100 _raise_conflicts("the backend dependencies", conflicting)
101 self.req.build_env.install_requirements(
102 finder, missing, 'normal',
103 "Installing backend dependencies"
104 )