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752 lines
24 KiB
752 lines
24 KiB
# Copyright 2021 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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import("//build_overrides/pigweed.gni")
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import("$dir_pw_build/input_group.gni")
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import("$dir_pw_build/mirror_tree.gni")
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import("$dir_pw_build/python_action.gni")
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# Python packages provide the following targets as $target_name.$subtarget.
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pw_python_package_subtargets = [
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"tests",
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"lint",
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"lint.mypy",
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"lint.pylint",
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"install",
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"wheel",
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# Internal targets that directly depend on one another.
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"_run_pip_install",
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"_build_wheel",
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]
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# Create aliases for subsargets when the target name matches the directory name.
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# This allows //foo:foo.tests to be accessed as //foo:tests, for example.
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template("_pw_create_aliases_if_name_matches_directory") {
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not_needed([ "invoker" ])
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if (get_label_info(":$target_name", "name") ==
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get_path_info(get_label_info(":$target_name", "dir"), "name")) {
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foreach(subtarget, pw_python_package_subtargets) {
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group(subtarget) {
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public_deps = [ ":${invoker.target_name}.$subtarget" ]
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}
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}
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}
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}
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# Internal template that runs Mypy.
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template("_pw_python_static_analysis_mypy") {
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pw_python_action(target_name) {
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module = "mypy"
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args = [
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"--pretty",
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"--show-error-codes",
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]
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if (defined(invoker.mypy_ini)) {
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args += [ "--config-file=" + rebase_path(invoker.mypy_ini) ]
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inputs = [ invoker.mypy_ini ]
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}
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args += rebase_path(invoker.sources)
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# Use this environment variable to force mypy to colorize output.
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# See https://github.com/python/mypy/issues/7771
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environment = [ "MYPY_FORCE_COLOR=1" ]
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directory = invoker.directory
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stamp = true
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deps = invoker.deps
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foreach(dep, invoker.python_deps) {
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deps += [ string_replace(dep, "(", ".lint.mypy(") ]
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}
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}
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}
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# Internal template that runs Pylint.
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template("_pw_python_static_analysis_pylint") {
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# Create a target to run pylint on each of the Python files in this
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# package and its dependencies.
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pw_python_action_foreach(target_name) {
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module = "pylint"
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args = [
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rebase_path(".") + "/{{source_target_relative}}",
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"--jobs=1",
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"--output-format=colorized",
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]
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if (defined(invoker.pylintrc)) {
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args += [ "--rcfile=" + rebase_path(invoker.pylintrc) ]
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inputs = [ invoker.pylintrc ]
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}
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if (host_os == "win") {
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# Allow CRLF on Windows, in case Git is set to switch line endings.
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args += [ "--disable=unexpected-line-ending-format" ]
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}
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sources = invoker.sources
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directory = invoker.directory
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stamp = "$target_gen_dir/{{source_target_relative}}.pylint.passed"
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public_deps = invoker.deps
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foreach(dep, invoker.python_deps) {
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public_deps += [ string_replace(dep, "(", ".lint.pylint(") ]
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}
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}
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}
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# Defines a Python package. GN Python packages contain several GN targets:
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#
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# - $name - Provides the Python files in the build, but does not take any
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# actions. All subtargets depend on this target.
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# - $name.lint - Runs static analyis tools on the Python code. This is a group
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# of two subtargets:
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# - $name.lint.mypy - Runs mypy (if enabled).
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# - $name.lint.pylint - Runs pylint (if enabled).
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# - $name.tests - Runs all tests for this package.
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# - $name.install - Installs the package in a venv.
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# - $name.wheel - Builds a Python wheel for the package.
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#
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# All Python packages are instantiated with the default toolchain, regardless of
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# the current toolchain.
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#
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# Args:
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# setup: List of setup file paths (setup.py or pyproject.toml & setup.cfg),
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# which must all be in the same directory.
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# generate_setup: As an alternative to 'setup', generate setup files with the
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# keywords in this scope. 'name' is required.
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# sources: Python sources files in the package.
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# tests: Test files for this Python package.
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# python_deps: Dependencies on other pw_python_packages in the GN build.
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# python_test_deps: Test-only pw_python_package dependencies.
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# other_deps: Dependencies on GN targets that are not pw_python_packages.
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# inputs: Other files to track, such as package_data.
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# proto_library: A pw_proto_library target to embed in this Python package.
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# generate_setup is required in place of setup if proto_library is used.
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# static_analysis: List of static analysis tools to run; "*" (default) runs
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# all tools. The supported tools are "mypy" and "pylint".
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# pylintrc: Optional path to a pylintrc configuration file to use. If not
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# provided, Pylint's default rcfile search is used. Pylint is executed
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# from the package's setup directory, so pylintrc files in that directory
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# will take precedence over others.
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# mypy_ini: Optional path to a mypy configuration file to use. If not
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# provided, mypy's default configuration file search is used. mypy is
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# executed from the package's setup directory, so mypy.ini files in that
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# directory will take precedence over others.
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#
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template("pw_python_package") {
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# The Python targets are always instantiated in the default toolchain. Use
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# fully qualified labels so that the toolchain is not lost.
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_other_deps = []
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if (defined(invoker.other_deps)) {
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foreach(dep, invoker.other_deps) {
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_other_deps += [ get_label_info(dep, "label_with_toolchain") ]
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}
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}
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_python_deps = []
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if (defined(invoker.python_deps)) {
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foreach(dep, invoker.python_deps) {
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_python_deps += [ get_label_info(dep, "label_with_toolchain") ]
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}
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}
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# pw_python_script uses pw_python_package, but with a limited set of features.
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# _pw_standalone signals that this target is actually a pw_python_script.
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_is_package = !(defined(invoker._pw_standalone) && invoker._pw_standalone)
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_generate_package = false
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# Check the generate_setup and import_protos args to determine if this package
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# is generated.
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if (_is_package) {
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assert(defined(invoker.generate_setup) != defined(invoker.setup),
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"Either 'setup' or 'generate_setup' (but not both) must provided")
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if (defined(invoker.proto_library)) {
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assert(invoker.proto_library != "", "'proto_library' cannot be empty")
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assert(defined(invoker.generate_setup),
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"Python packages that import protos with 'proto_library' must " +
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"use 'generate_setup' instead of 'setup'")
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_import_protos = [ invoker.proto_library ]
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} else if (defined(invoker.generate_setup)) {
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_import_protos = []
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}
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if (defined(invoker.generate_setup)) {
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_generate_package = true
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_setup_dir = "$target_gen_dir/$target_name.generated_python_package"
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if (defined(invoker.strip_prefix)) {
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_source_root = invoker.strip_prefix
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} else {
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_source_root = "."
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}
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} else {
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# Non-generated packages with sources provided need an __init__.py.
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assert(!defined(invoker.sources) || invoker.sources == [] ||
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filter_include(invoker.sources, [ "*\b__init__.py" ]) != [],
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"Python packages must have at least one __init__.py file")
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# Get the directories of the setup files. All must be in the same dir.
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_setup_dirs = get_path_info(invoker.setup, "dir")
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_setup_dir = _setup_dirs[0]
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foreach(dir, _setup_dirs) {
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assert(dir == _setup_dir,
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"All files in 'setup' must be in the same directory")
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}
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assert(!defined(invoker.strip_prefix),
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"'strip_prefix' may only be given if 'generate_setup' is provided")
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}
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}
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# Process arguments defaults and set defaults.
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_supported_static_analysis_tools = [
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"mypy",
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"pylint",
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]
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not_needed([ "_supported_static_analysis_tools" ])
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# Argument: static_analysis (list of tool names or "*"); default = "*" (all)
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if (!defined(invoker.static_analysis) || invoker.static_analysis == "*") {
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_static_analysis = _supported_static_analysis_tools
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} else {
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_static_analysis = invoker.static_analysis
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}
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# TODO(hepler): Remove support for the lint option.
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if (defined(invoker.lint)) {
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assert(!defined(invoker.static_analysis),
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"'lint' is deprecated; use 'static_analysis' instead")
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# Only allow 'lint = false', for backwards compatibility.
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assert(invoker.lint == false, "'lint' is deprecated; use 'static_analysis'")
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print("WARNING:",
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"The 'lint' option for pw_python_package is deprecated.",
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"Instead, use 'static_analysis = []' to disable linting.")
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_static_analysis = []
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}
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foreach(_tool, _static_analysis) {
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assert(_supported_static_analysis_tools + [ _tool ] - [ _tool ] !=
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_supported_static_analysis_tools,
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"'$_tool' is not a supported static analysis tool")
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}
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# Argument: sources (list)
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_sources = []
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if (defined(invoker.sources)) {
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if (_generate_package) {
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foreach(source, rebase_path(invoker.sources, _source_root)) {
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_sources += [ "$_setup_dir/$source" ]
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}
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} else {
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_sources += invoker.sources
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}
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}
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# Argument: tests (list)
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_test_sources = []
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if (defined(invoker.tests)) {
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if (_generate_package) {
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foreach(source, rebase_path(invoker.tests, _source_root)) {
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_test_sources += [ "$_setup_dir/$source" ]
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}
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} else {
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_test_sources += invoker.tests
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}
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}
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# Argument: setup (list)
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_setup_sources = []
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if (defined(invoker.setup)) {
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_setup_sources = invoker.setup
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} else if (_generate_package) {
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_setup_sources = [ "$_setup_dir/setup.py" ]
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}
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# Argument: python_test_deps (list)
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_python_test_deps = _python_deps # include all deps in test deps
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if (defined(invoker.python_test_deps)) {
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foreach(dep, invoker.python_test_deps) {
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_python_test_deps += [ get_label_info(dep, "label_with_toolchain") ]
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}
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}
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if (_test_sources == []) {
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assert(!defined(invoker.python_test_deps),
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"python_test_deps was provided, but there are no tests in " +
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get_label_info(":$target_name", "label_no_toolchain"))
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not_needed([ "_python_test_deps" ])
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}
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_all_py_files = _sources + _test_sources + _setup_sources
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# The pw_python_package subtargets are only instantiated in the default
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# toolchain. Other toolchains just refer to targets in the default toolchain.
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if (current_toolchain == default_toolchain) {
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# Declare the main Python package group. This represents the Python files,
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# but does not take any actions. GN targets can depend on the package name
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# to run when any files in the package change.
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if (_generate_package) {
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# If this package is generated, mirror the sources to the final directory.
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pw_mirror_tree("$target_name._mirror_sources_to_out_dir") {
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directory = _setup_dir
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sources = []
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if (defined(invoker.sources)) {
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sources += invoker.sources
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}
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if (defined(invoker.tests)) {
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sources += invoker.tests
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}
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source_root = _source_root
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public_deps = _python_deps + _other_deps
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}
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# Depend on the proto's _gen targets (from the default toolchain).
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_gen_protos = []
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foreach(proto, _import_protos) {
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_gen_protos +=
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[ get_label_info(proto, "label_no_toolchain") + ".python._gen" ]
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}
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generated_file("$target_name._protos") {
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deps = _gen_protos
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data_keys = [ "protoc_outputs" ]
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outputs = [ "$_setup_dir/protos.txt" ]
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}
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_protos_file = get_target_outputs(":${invoker.target_name}._protos")
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generated_file("$target_name._protos_root") {
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deps = _gen_protos
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data_keys = [ "root" ]
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outputs = [ "$_setup_dir/proto_root.txt" ]
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}
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_root_file = get_target_outputs(":${invoker.target_name}._protos_root")
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# Get generated_setup scope and write it to disk ask JSON.
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_gen_setup = invoker.generate_setup
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assert(defined(_gen_setup.name), "'name' is required in generate_package")
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assert(!defined(_gen_setup.packages) && !defined(_gen_setup.package_data),
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"'packages' and 'package_data' may not be provided " +
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"in 'generate_package'")
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write_file("$_setup_dir/setup.json", _gen_setup, "json")
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# Generate the setup.py, py.typed, and __init__.py files as needed.
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action(target_name) {
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script = "$dir_pw_build/py/pw_build/generate_python_package.py"
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args = [
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"--label",
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get_label_info(":$target_name", "label_no_toolchain"),
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"--root",
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rebase_path(_setup_dir),
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"--setup-json",
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rebase_path("$_setup_dir/setup.json"),
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"--file-list",
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rebase_path(_protos_file[0]),
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"--file-list-root",
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rebase_path(_root_file[0]),
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] + rebase_path(_sources)
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if (defined(invoker._pw_module_as_package) &&
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invoker._pw_module_as_package) {
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args += [ "--module-as-package" ]
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}
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inputs = [ "$_setup_dir/setup.json" ]
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public_deps = [
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":$target_name._mirror_sources_to_out_dir",
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":$target_name._protos",
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":$target_name._protos_root",
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]
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foreach(proto, _import_protos) {
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_tgt = get_label_info(proto, "label_no_toolchain")
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_path = get_label_info("$_tgt($default_toolchain)", "target_gen_dir")
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_name = get_label_info(_tgt, "name")
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args += [
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"--proto-library=$_tgt",
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"--proto-library-file",
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rebase_path("$_path/$_name.proto_library/python_package.txt"),
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]
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public_deps += [ "$_tgt.python._gen($default_toolchain)" ]
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}
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outputs = _setup_sources
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}
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} else {
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# If the package is not generated, use an input group for the sources.
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pw_input_group(target_name) {
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inputs = _all_py_files
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if (defined(invoker.inputs)) {
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inputs += invoker.inputs
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}
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deps = _python_deps + _other_deps
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}
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}
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if (_is_package) {
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# Install this Python package and its dependencies in the current Python
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# environment using pip.
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pw_python_action("$target_name._run_pip_install") {
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module = "pip"
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public_deps = []
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args = [ "install" ]
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# For generated packages, reinstall when any files change. For regular
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# packages, only reinstall when setup.py changes.
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if (_generate_package) {
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public_deps += [ ":${invoker.target_name}" ]
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} else {
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inputs = invoker.setup
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# Install with --editable since the complete package is in source.
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args += [ "--editable" ]
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}
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args += [ rebase_path(_setup_dir) ]
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stamp = true
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# Parallel pip installations don't work, so serialize pip invocations.
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pool = "$dir_pw_build:pip_pool"
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foreach(dep, _python_deps) {
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# We need to add a suffix to the target name, but the label is
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# formatted as "//path/to:target(toolchain)", so we can't just append
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# ".subtarget". Instead, we replace the opening parenthesis of the
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# toolchain with ".suffix(".
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public_deps += [ string_replace(dep, "(", "._run_pip_install(") ]
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}
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}
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# Builds a Python wheel for this package. Records the output directory
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# in the pw_python_package_wheels metadata key.
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pw_python_action("$target_name._build_wheel") {
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metadata = {
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pw_python_package_wheels = [ "$target_out_dir/$target_name" ]
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}
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module = "build"
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args = [
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rebase_path(_setup_dir),
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"--wheel",
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"--no-isolation",
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"--outdir",
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] + rebase_path(metadata.pw_python_package_wheels)
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deps = [ ":${invoker.target_name}" ]
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foreach(dep, _python_deps) {
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deps += [ string_replace(dep, "(", ".wheel(") ]
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}
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stamp = true
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}
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} else {
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# Stubs for non-package targets.
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group("$target_name._run_pip_install") {
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}
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group("$target_name._build_wheel") {
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}
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}
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# Create the .install and .wheel targets. To limit unnecessary pip
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# executions, non-generated packages are only reinstalled when their
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# setup.py changes. However, targets that depend on the .install subtarget
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# re-run whenever any source files change.
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#
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# These targets just represent the source files if this isn't a package.
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group("$target_name.install") {
|
|
public_deps = [ ":${invoker.target_name}" ]
|
|
|
|
if (_is_package) {
|
|
public_deps += [ ":${invoker.target_name}._run_pip_install" ]
|
|
}
|
|
|
|
foreach(dep, _python_deps) {
|
|
public_deps += [ string_replace(dep, "(", ".install(") ]
|
|
}
|
|
}
|
|
|
|
group("$target_name.wheel") {
|
|
public_deps = [ ":${invoker.target_name}.install" ]
|
|
|
|
if (_is_package) {
|
|
public_deps += [ ":${invoker.target_name}._build_wheel" ]
|
|
}
|
|
|
|
foreach(dep, _python_deps) {
|
|
public_deps += [ string_replace(dep, "(", ".wheel(") ]
|
|
}
|
|
}
|
|
|
|
# Define the static analysis targets for this package.
|
|
group("$target_name.lint") {
|
|
deps = []
|
|
foreach(_tool, _supported_static_analysis_tools) {
|
|
deps += [ ":${invoker.target_name}.lint.$_tool" ]
|
|
}
|
|
}
|
|
|
|
if (_static_analysis != [] || _test_sources != []) {
|
|
# All packages to install for either general use or test running.
|
|
_test_install_deps = [ ":$target_name.install" ]
|
|
foreach(dep, _python_test_deps + [ "$dir_pw_build:python_lint" ]) {
|
|
_test_install_deps += [ string_replace(dep, "(", ".install(") ]
|
|
}
|
|
}
|
|
|
|
# For packages that are not generated, create targets to run mypy and pylint.
|
|
foreach(_tool, _static_analysis) {
|
|
# Run lint tools from the setup or target directory so that the tools detect
|
|
# config files (e.g. pylintrc or mypy.ini) in that directory. Config files
|
|
# may be explicitly specified with the pylintrc or mypy_ini arguments.
|
|
target("_pw_python_static_analysis_$_tool", "$target_name.lint.$_tool") {
|
|
sources = _all_py_files
|
|
deps = _test_install_deps
|
|
python_deps = _python_deps
|
|
|
|
if (defined(_setup_dir)) {
|
|
directory = rebase_path(_setup_dir)
|
|
} else {
|
|
directory = rebase_path(".")
|
|
}
|
|
|
|
_optional_variables = [
|
|
"mypy_ini",
|
|
"pylintrc",
|
|
]
|
|
forward_variables_from(invoker, _optional_variables)
|
|
not_needed(_optional_variables)
|
|
}
|
|
}
|
|
|
|
foreach(_unused_tool, _supported_static_analysis_tools - _static_analysis) {
|
|
pw_input_group("$target_name.lint.$_unused_tool") {
|
|
inputs = []
|
|
if (defined(invoker.pylintrc)) {
|
|
inputs += [ invoker.pylintrc ]
|
|
}
|
|
if (defined(invoker.mypy_ini)) {
|
|
inputs += [ invoker.mypy_ini ]
|
|
}
|
|
}
|
|
|
|
# Generated packages with linting disabled never need the whole file list.
|
|
not_needed([ "_all_py_files" ])
|
|
}
|
|
} else {
|
|
# Create groups with the public target names ($target_name, $target_name.lint,
|
|
# $target_name.install, etc.). These are actually wrappers around internal
|
|
# Python actions instantiated with the default toolchain. This ensures there
|
|
# is only a single copy of each Python action in the build.
|
|
#
|
|
# The $target_name.tests group is created separately below.
|
|
group("$target_name") {
|
|
deps = [ ":$target_name($default_toolchain)" ]
|
|
}
|
|
|
|
foreach(subtarget, pw_python_package_subtargets - [ "tests" ]) {
|
|
group("$target_name.$subtarget") {
|
|
deps = [ ":${invoker.target_name}.$subtarget($default_toolchain)" ]
|
|
}
|
|
}
|
|
|
|
# Everything Python-related is only instantiated in the default toolchain.
|
|
# Silence not-needed warnings except for in the default toolchain.
|
|
not_needed("*")
|
|
not_needed(invoker, "*")
|
|
}
|
|
|
|
# Create a target for each test file.
|
|
_test_targets = []
|
|
|
|
foreach(test, _test_sources) {
|
|
if (_is_package) {
|
|
_name = rebase_path(test, _setup_dir)
|
|
} else {
|
|
_name = test
|
|
}
|
|
|
|
_test_target = "$target_name.tests." + string_replace(_name, "/", "_")
|
|
|
|
if (current_toolchain == default_toolchain) {
|
|
pw_python_action(_test_target) {
|
|
script = test
|
|
stamp = true
|
|
|
|
deps = _test_install_deps
|
|
|
|
foreach(dep, _python_test_deps) {
|
|
deps += [ string_replace(dep, "(", ".tests(") ]
|
|
}
|
|
}
|
|
} else {
|
|
# Create a public version of each test target, so tests can be executed as
|
|
# //path/to:package.tests.foo.py.
|
|
group(_test_target) {
|
|
deps = [ ":$_test_target($default_toolchain)" ]
|
|
}
|
|
}
|
|
|
|
_test_targets += [ ":$_test_target" ]
|
|
}
|
|
|
|
group("$target_name.tests") {
|
|
deps = _test_targets
|
|
}
|
|
|
|
_pw_create_aliases_if_name_matches_directory(target_name) {
|
|
}
|
|
}
|
|
|
|
# Declares a group of Python packages or other Python groups. pw_python_groups
|
|
# expose the same set of subtargets as pw_python_package (e.g.
|
|
# "$group_name.lint" and "$group_name.tests"), but these apply to all packages
|
|
# in deps and their dependencies.
|
|
template("pw_python_group") {
|
|
if (defined(invoker.python_deps)) {
|
|
_python_deps = invoker.python_deps
|
|
} else {
|
|
_python_deps = []
|
|
}
|
|
|
|
group(target_name) {
|
|
deps = _python_deps
|
|
}
|
|
|
|
foreach(subtarget, pw_python_package_subtargets) {
|
|
group("$target_name.$subtarget") {
|
|
public_deps = []
|
|
foreach(dep, _python_deps) {
|
|
# Split out the toolchain to support deps with a toolchain specified.
|
|
_target = get_label_info(dep, "label_no_toolchain")
|
|
_toolchain = get_label_info(dep, "toolchain")
|
|
public_deps += [ "$_target.$subtarget($_toolchain)" ]
|
|
}
|
|
}
|
|
}
|
|
|
|
_pw_create_aliases_if_name_matches_directory(target_name) {
|
|
}
|
|
}
|
|
|
|
# Declares Python scripts or tests that are not part of a Python package.
|
|
# Similar to pw_python_package, but only supports a subset of its features.
|
|
#
|
|
# pw_python_script accepts the same arguments as pw_python_package, except
|
|
# `setup` cannot be provided.
|
|
#
|
|
# pw_python_script provides the same subtargets as pw_python_package, but
|
|
# $target_name.install and $target_name.wheel only affect the python_deps of
|
|
# this GN target, not the target itself.
|
|
template("pw_python_script") {
|
|
_supported_variables = [
|
|
"sources",
|
|
"tests",
|
|
"python_deps",
|
|
"other_deps",
|
|
"inputs",
|
|
"pylintrc",
|
|
"mypy_ini",
|
|
"static_analysis",
|
|
]
|
|
|
|
pw_python_package(target_name) {
|
|
_pw_standalone = true
|
|
forward_variables_from(invoker, _supported_variables)
|
|
}
|
|
|
|
_pw_create_aliases_if_name_matches_directory(target_name) {
|
|
}
|
|
}
|
|
|
|
# Represents a list of Python requirements, as in a requirements.txt.
|
|
#
|
|
# Args:
|
|
# files: One or more requirements.txt files.
|
|
# requirements: A list of requirements.txt-style requirements.
|
|
template("pw_python_requirements") {
|
|
assert(defined(invoker.files) || defined(invoker.requirements),
|
|
"pw_python_requirements requires a list of requirements.txt files " +
|
|
"in the 'files' arg or requirements in 'requirements'")
|
|
|
|
_requirements_files = []
|
|
|
|
if (defined(invoker.files)) {
|
|
_requirements_files += invoker.files
|
|
}
|
|
|
|
if (defined(invoker.requirements)) {
|
|
_requirements_file = "$target_gen_dir/$target_name.requirements.txt"
|
|
write_file(_requirements_file, invoker.requirements)
|
|
_requirements_files += [ _requirements_file ]
|
|
}
|
|
|
|
# The default target represents the requirements themselves.
|
|
pw_input_group(target_name) {
|
|
inputs = _requirements_files
|
|
}
|
|
|
|
# Use the same subtargets as pw_python_package so these targets can be listed
|
|
# as python_deps of pw_python_packages.
|
|
pw_python_action("$target_name.install") {
|
|
inputs = _requirements_files
|
|
|
|
module = "pip"
|
|
args = [ "install" ]
|
|
|
|
foreach(_requirements_file, inputs) {
|
|
args += [
|
|
"--requirement",
|
|
rebase_path(_requirements_file),
|
|
]
|
|
}
|
|
|
|
pool = "$dir_pw_build:pip_pool"
|
|
stamp = true
|
|
}
|
|
|
|
# Create stubs for the unused subtargets so that pw_python_requirements can be
|
|
# used as python_deps.
|
|
foreach(subtarget, pw_python_package_subtargets - [ "install" ]) {
|
|
group("$target_name.$subtarget") {
|
|
}
|
|
}
|
|
|
|
_pw_create_aliases_if_name_matches_directory(target_name) {
|
|
}
|
|
}
|