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26af6fe | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | from __future__ import annotations
import logging
from collections.abc import Iterable
from typing import TYPE_CHECKING
from pip._internal.build_env import BuildEnvironment
from pip._internal.distributions.base import AbstractDistribution
from pip._internal.exceptions import InstallationError
from pip._internal.metadata import BaseDistribution
from pip._internal.utils.subprocess import runner_with_spinner_message
if TYPE_CHECKING:
from pip._internal.build_env import BuildEnvironmentInstaller
logger = logging.getLogger(__name__)
class SourceDistribution(AbstractDistribution):
"""Represents a source distribution.
The preparation step for these needs metadata for the packages to be
generated.
"""
@property
def build_tracker_id(self) -> str | None:
"""Identify this requirement uniquely by its link."""
assert self.req.link
return self.req.link.url_without_fragment
def get_metadata_distribution(self) -> BaseDistribution:
return self.req.get_dist()
def prepare_distribution_metadata(
self,
build_env_installer: BuildEnvironmentInstaller,
build_isolation: bool,
check_build_deps: bool,
) -> None:
# Load pyproject.toml
self.req.load_pyproject_toml()
# Set up the build isolation, if this requirement should be isolated
if build_isolation:
# Setup an isolated environment and install the build backend static
# requirements in it.
self._prepare_build_backend(build_env_installer)
# Check that the build backend supports PEP 660. This cannot be done
# earlier because we need to setup the build backend to verify it
# supports build_editable, nor can it be done later, because we want
# to avoid installing build requirements needlessly.
self.req.editable_sanity_check()
# Install the dynamic build requirements.
self._install_build_reqs(build_env_installer)
else:
# When not using build isolation, we still need to check that
# the build backend supports PEP 660.
self.req.editable_sanity_check()
# Check if the current environment provides build dependencies
if check_build_deps:
pyproject_requires = self.req.pyproject_requires
assert pyproject_requires is not None
conflicting, missing = self.req.build_env.check_requirements(
pyproject_requires
)
if conflicting:
self._raise_conflicts("the backend dependencies", conflicting)
if missing:
self._raise_missing_reqs(missing)
self.req.prepare_metadata()
def _prepare_build_backend(
self, build_env_installer: BuildEnvironmentInstaller
) -> None:
# Isolate in a BuildEnvironment and install the build-time
# requirements.
pyproject_requires = self.req.pyproject_requires
assert pyproject_requires is not None
self.req.build_env = BuildEnvironment(build_env_installer)
self.req.build_env.install_requirements(
pyproject_requires, "overlay", kind="build dependencies", for_req=self.req
)
conflicting, missing = self.req.build_env.check_requirements(
self.req.requirements_to_check
)
if conflicting:
self._raise_conflicts("PEP 517/518 supported requirements", conflicting)
if missing:
logger.warning(
"Missing build requirements in pyproject.toml for %s.",
self.req,
)
logger.warning(
"The project does not specify a build backend, and "
"pip cannot fall back to setuptools without %s.",
" and ".join(map(repr, sorted(missing))),
)
def _get_build_requires_wheel(self) -> Iterable[str]:
with self.req.build_env:
runner = runner_with_spinner_message("Getting requirements to build wheel")
backend = self.req.pep517_backend
assert backend is not None
with backend.subprocess_runner(runner):
return backend.get_requires_for_build_wheel()
def _get_build_requires_editable(self) -> Iterable[str]:
with self.req.build_env:
runner = runner_with_spinner_message(
"Getting requirements to build editable"
)
backend = self.req.pep517_backend
assert backend is not None
with backend.subprocess_runner(runner):
return backend.get_requires_for_build_editable()
def _install_build_reqs(
self, build_env_installer: BuildEnvironmentInstaller
) -> None:
# Install any extra build dependencies that the backend requests.
# This must be done in a second pass, as the pyproject.toml
# dependencies must be installed before we can call the backend.
if (
self.req.editable
and self.req.permit_editable_wheels
and self.req.supports_pyproject_editable
):
build_reqs = self._get_build_requires_editable()
else:
build_reqs = self._get_build_requires_wheel()
conflicting, missing = self.req.build_env.check_requirements(build_reqs)
if conflicting:
self._raise_conflicts("the backend dependencies", conflicting)
self.req.build_env.install_requirements(
missing, "normal", kind="backend dependencies", for_req=self.req
)
def _raise_conflicts(
self, conflicting_with: str, conflicting_reqs: set[tuple[str, str]]
) -> None:
format_string = (
"Some build dependencies for {requirement} "
"conflict with {conflicting_with}: {description}."
)
error_message = format_string.format(
requirement=self.req,
conflicting_with=conflicting_with,
description=", ".join(
f"{installed} is incompatible with {wanted}"
for installed, wanted in sorted(conflicting_reqs)
),
)
raise InstallationError(error_message)
def _raise_missing_reqs(self, missing: set[str]) -> None:
format_string = (
"Some build dependencies for {requirement} are missing: {missing}."
)
error_message = format_string.format(
requirement=self.req, missing=", ".join(map(repr, sorted(missing)))
)
raise InstallationError(error_message)
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