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RunInfo

Provider that signals a rule is runnable and defines how to execute it.

RunInfo marks a target as executable and specifies how to run it. When a target provides RunInfo, it can be executed with buck2 run <target>. The provider wraps the command-line arguments that define the executable and its parameters.

Usage

To run a target with RunInfo:

buck2 run <target>                    # Run with the args specified in RunInfo
buck2 run <target> -- [extra args]    # Pass additional args after '--' to the command

Examples​

Basic executable with script:

def _sh_binary_impl(ctx):
    script = ctx.actions.write("script.sh", ctx.attrs.script_content, is_executable = True)
    return [
        DefaultInfo(default_output = script),
        RunInfo(args = cmd_args(script)),
    ]

Executable with arguments and resources:

def _binary_impl(ctx):
    exe = ...

    return [
        DefaultInfo(default_output = exe),
        RunInfo(
            args = cmd_args(exe),
        ),
    ]

RunInfo.args​

RunInfo.args: cmd_args

The command to run, stored as CommandLine