dart.bazelrc

# Copyright 2026 Google LLC
#
# 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.
#
# SPDX-License-Identifier: Apache-2.0

# =============================================================================
# Dart Build Configuration
# =============================================================================

# -----------------------------------------------------------------------------
# Compilation Modes
# -----------------------------------------------------------------------------
build:release --compilation_mode=opt
build:debug --compilation_mode=dbg

# -----------------------------------------------------------------------------
# Sandboxing Strategy
# -----------------------------------------------------------------------------
# Use sandboxed execution with fallback to local for actions that don't support it
# This provides hermeticity while allowing CopyFile and similar actions to work
build --spawn_strategy=sandboxed,standalone

# Enable sandbox debugging (shows what's happening in the sandbox)
build:sandbox_debug --sandbox_debug

# -----------------------------------------------------------------------------
# Test Configuration
# -----------------------------------------------------------------------------
# Dart tests run 'pub get' inside the sandbox which can be network/IO bound
# Increase timeouts to prevent flakes on slower machines/CI
test --test_timeout=360,900,3600,10800

# Always show output on failure
test --test_output=errors

# -----------------------------------------------------------------------------
# Debugging
# -----------------------------------------------------------------------------
# When compiling in debug mode, preserve debugging information
build:dbg --copt="-g"
# Enable verbose failure logs to see script generation issues
build --verbose_failures
# Show subcommand output for debugging build actions
build:verbose --subcommands

# -----------------------------------------------------------------------------
# Platform & Toolchain
# -----------------------------------------------------------------------------
# Ensure correct platform resolution particularly for cross-compilation
build --incompatible_enable_cc_toolchain_resolution

# -----------------------------------------------------------------------------
# Worker Configuration
# -----------------------------------------------------------------------------
# Persistent workers are NOT currently implemented for Dart compilation.
# The config below is a placeholder for future implementation.
# Workers require a proper binary implementing the Bazel worker protocol
# (JSON requests/responses via stdin/stdout).
# TODO(#124): Implement proper persistent worker binary for Dart compilation.
#
# Usage (once implemented): bazel build --config=dart_worker //...
# build:dart_worker --strategy=DartCompile=worker
# build:dart_worker --worker_sandboxing

# -----------------------------------------------------------------------------
# Strict Mode (for CI - maximum hermeticity)
# -----------------------------------------------------------------------------
# Usage: bazel build --config=strict //...
build:strict --spawn_strategy=sandboxed
build:strict --experimental_strict_action_env