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annotate planemo/lib/python3.7/site-packages/pip/_internal/distributions/source.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 import logging
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2
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3 from pip._internal.build_env import BuildEnvironment
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4 from pip._internal.distributions.base import AbstractDistribution
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5 from pip._internal.exceptions import InstallationError
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6
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7 logger = logging.getLogger(__name__)
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8
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9
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10 class SourceDistribution(AbstractDistribution):
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11 """Represents a source distribution.
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12
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13 The preparation step for these needs metadata for the packages to be
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14 generated, either using PEP 517 or using the legacy `setup.py egg_info`.
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15
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16 NOTE from @pradyunsg (14 June 2019)
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17 I expect SourceDistribution class will need to be split into
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18 `legacy_source` (setup.py based) and `source` (PEP 517 based) when we start
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19 bringing logic for preparation out of InstallRequirement into this class.
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20 """
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21
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22 def get_pkg_resources_distribution(self):
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23 return self.req.get_dist()
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24
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25 def prepare_distribution_metadata(self, finder, build_isolation):
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26 # Prepare for building. We need to:
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27 # 1. Load pyproject.toml (if it exists)
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28 # 2. Set up the build environment
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29
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30 self.req.load_pyproject_toml()
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31 should_isolate = self.req.use_pep517 and build_isolation
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32
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33 def _raise_conflicts(conflicting_with, conflicting_reqs):
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34 raise InstallationError(
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35 "Some build dependencies for %s conflict with %s: %s." % (
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36 self.req, conflicting_with, ', '.join(
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37 '%s is incompatible with %s' % (installed, wanted)
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38 for installed, wanted in sorted(conflicting))))
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39
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40 if should_isolate:
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41 # Isolate in a BuildEnvironment and install the build-time
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42 # requirements.
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43 self.req.build_env = BuildEnvironment()
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44 self.req.build_env.install_requirements(
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45 finder, self.req.pyproject_requires, 'overlay',
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46 "Installing build dependencies"
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47 )
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48 conflicting, missing = self.req.build_env.check_requirements(
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49 self.req.requirements_to_check
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50 )
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51 if conflicting:
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52 _raise_conflicts("PEP 517/518 supported requirements",
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53 conflicting)
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54 if missing:
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55 logger.warning(
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56 "Missing build requirements in pyproject.toml for %s.",
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57 self.req,
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58 )
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59 logger.warning(
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60 "The project does not specify a build backend, and "
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61 "pip cannot fall back to setuptools without %s.",
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62 " and ".join(map(repr, sorted(missing)))
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63 )
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64 # Install any extra build dependencies that the backend requests.
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65 # This must be done in a second pass, as the pyproject.toml
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66 # dependencies must be installed before we can call the backend.
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67 with self.req.build_env:
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68 # We need to have the env active when calling the hook.
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69 self.req.spin_message = "Getting requirements to build wheel"
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70 reqs = self.req.pep517_backend.get_requires_for_build_wheel()
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71 conflicting, missing = self.req.build_env.check_requirements(reqs)
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72 if conflicting:
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73 _raise_conflicts("the backend dependencies", conflicting)
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74 self.req.build_env.install_requirements(
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75 finder, missing, 'normal',
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76 "Installing backend dependencies"
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77 )
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78
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79 self.req.prepare_metadata()
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80 self.req.assert_source_matches_version()