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#!/usr/bin/env python3
# Copyright 2022 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
'''Update in-tree checkout of Rust toolchain
!!! DO NOT USE IN PRODUCTION
Some functionality can be used outside of a chromium checkout. For example,
running with `--print-rust-revision` will succeed. Other functionality requires
a Chromium checkout to access functions from other scripts.
'''
import argparse
import os
import sys
from pathlib import Path
# Add Clang scripts to path so we can import them later (if running within a
# Chromium checkout.)
sys.path.append(
os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'clang',
'scripts'))
# Trunk on 4/1/2022
RUST_REVISION = '79f178b7'
RUST_SUB_REVISION = 1
# Hash of src/stage0.json, which itself contains the stage0 toolchain hashes.
# We trust the Rust build system checks, but to ensure it is not tampered with
# itself check the hash.
STAGE0_JSON_SHA256 = (
'a38b7ea8b8cbdb592b1a7ae8b97fa31746a2bda309597de111be4893a035070d')
def GetPackageVersion():
from update import (CLANG_REVISION, CLANG_SUB_REVISION)
return '%s-%s-%s-%s' % (RUST_REVISION, RUST_SUB_REVISION, CLANG_REVISION,
CLANG_SUB_REVISION)
def main():
parser = argparse.ArgumentParser(description='Update Rust package')
parser.add_argument('--print-rust-revision',
action='store_true',
help='Print Rust revision (without Clang revision). Can '
'be run outside of a Chromium checkout.')
parser.add_argument('--print-package-version',
action='store_true',
help='Print Rust package version (including both the '
'Rust and Clang revisions)')
args = parser.parse_args()
if args.print_rust_revision:
print(f'{RUST_REVISION}-{RUST_SUB_REVISION}')
return 0
if args.print_package_version:
print(GetPackageVersion())
return 0
if __name__ == '__main__':
sys.exit(main())
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