This package contains libraries and example code for working with the engine_v2 build config json files that live under flutter/ci/builders.

lib/src/build_config.dart: Contains the Dart object representations of the build config json files.
lib/src/build_config_loader.dart: Contains a helper class for loading all of the build configuration json files in a directory tree into the Dart objects.
lib/src/build_config_runner.dart: Contains classes that run a loaded build config on the local machine.

There is some example code using these APIs under the bin/ directory.

bin/check.dart: Checks the validity of the build config json files. This runs on CI in pre and post submit in ci/check_build_configs.sh through ci/builders/linux_unopt.json.
bin/run.dart: Runs one build from a build configuration on the local machine. It doesn't run generators or tests, and it isn't run on CI.

Usage

<tt>run.dart</tt> usage:

$ dart bin/run.dart [build config name] [build name]

For example:

$ dart bin/run.dart mac_unopt host_debug_unopt

The build config names are the names of the json files under ci/builders. The build names are the "name" fields of the maps in the list of "builds".

$ dart bin/check.dart [/path/to/engine/src]

The path to the engine source is optional when the current working directory is inside of an engine checkout.