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# Copyright 2023 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"Module extensions for use with bzlmod"
load("@rules_python//python:repositories.bzl", "python_register_toolchains")
load("@rules_python//python/pip_install:pip_repository.bzl", "locked_requirements_label", "pip_repository_attrs", "pip_repository_bzlmod", "use_isolated", "whl_library")
load("@rules_python//python/pip_install:repositories.bzl", "pip_install_dependencies")
load("@rules_python//python/pip_install:requirements_parser.bzl", parse_requirements = "parse")
load("@rules_python//python/private:coverage_deps.bzl", "install_coverage_deps")
load("@rules_python//python/private:interpreter_hub.bzl", "hub_repo")
def _python_impl(module_ctx):
toolchains = []
for mod in module_ctx.modules:
for toolchain_attr in mod.tags.toolchain:
python_register_toolchains(
name = toolchain_attr.name,
python_version = toolchain_attr.python_version,
bzlmod = True,
# Toolchain registration in bzlmod is done in MODULE file
register_toolchains = False,
register_coverage_tool = toolchain_attr.configure_coverage_tool,
ignore_root_user_error = toolchain_attr.ignore_root_user_error,
)
# We collect all of the toolchain names to create
# the INTERPRETER_LABELS map. This is used
# by interpreter_extensions.bzl
toolchains.append(toolchain_attr.name)
hub_repo(
name = "pythons_hub",
toolchains = toolchains,
)
python = module_extension(
implementation = _python_impl,
tag_classes = {
"toolchain": tag_class(
attrs = {
"configure_coverage_tool": attr.bool(
mandatory = False,
doc = "Whether or not to configure the default coverage tool for the toolchains.",
),
"ignore_root_user_error": attr.bool(
default = False,
doc = "Whether the check for root should be ignored or not. This causes cache misses with .pyc files.",
mandatory = False,
),
"name": attr.string(mandatory = True),
"python_version": attr.string(mandatory = True),
},
),
},
)
# buildifier: disable=unused-variable
def _internal_deps_impl(module_ctx):
pip_install_dependencies()
install_coverage_deps()
internal_deps = module_extension(
implementation = _internal_deps_impl,
tag_classes = {
"install": tag_class(attrs = dict()),
},
)
def _pip_impl(module_ctx):
for mod in module_ctx.modules:
for attr in mod.tags.parse:
requrements_lock = locked_requirements_label(module_ctx, attr)
# Parse the requirements file directly in starlark to get the information
# needed for the whl_libary declarations below. This is needed to contain
# the pip_repository logic to a single module extension.
requirements_lock_content = module_ctx.read(requrements_lock)
parse_result = parse_requirements(requirements_lock_content)
requirements = parse_result.requirements
extra_pip_args = attr.extra_pip_args + parse_result.options
# Create the repository where users load the `requirement` macro. Under bzlmod
# this does not create the install_deps() macro.
pip_repository_bzlmod(
name = attr.name,
requirements_lock = attr.requirements_lock,
incompatible_generate_aliases = attr.incompatible_generate_aliases,
)
for name, requirement_line in requirements:
whl_library(
name = "%s_%s" % (attr.name, _sanitize_name(name)),
requirement = requirement_line,
repo = attr.name,
repo_prefix = attr.name + "_",
annotation = attr.annotations.get(name),
python_interpreter = attr.python_interpreter,
python_interpreter_target = attr.python_interpreter_target,
quiet = attr.quiet,
timeout = attr.timeout,
isolated = use_isolated(module_ctx, attr),
extra_pip_args = extra_pip_args,
download_only = attr.download_only,
pip_data_exclude = attr.pip_data_exclude,
enable_implicit_namespace_pkgs = attr.enable_implicit_namespace_pkgs,
environment = attr.environment,
)
# Keep in sync with python/pip_install/tools/bazel.py
def _sanitize_name(name):
return name.replace("-", "_").replace(".", "_").lower()
def _pip_parse_ext_attrs():
attrs = dict({
"name": attr.string(mandatory = True),
}, **pip_repository_attrs)
# Like the pip_repository rule, we end up setting this manually so
# don't allow users to override it.
attrs.pop("repo_prefix")
return attrs
pip = module_extension(
implementation = _pip_impl,
tag_classes = {
"parse": tag_class(attrs = _pip_parse_ext_attrs()),
},
)