Grinder for Dart

A task based, dependency aware build system.

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Grinder is a library and tool to drive a command-line build.

Build files are entirely specified in Dart code. This allows you to write and debug your build files with the same tools you use for the rest of your project source.


To install, run:

pub global activate grinder

Getting Started

Your grinder build file should reside at tool/grind.dart. You can use grinder to create a simple, starting build script. To do this, run:

pub global run grinder:init

This will create a starting script in tool/grind.dart.

In general, your build script will look something like this:

import 'package:grinder/grinder.dart';

main(args) => grind(args);

@Task('Initialize stuff.')
init() {
  log("Initializing stuff...");

@Task('Compile stuff.')
compile() {
  log("Compiling stuff...");

@DefaultTask('Deploy stuff.')
deploy() {
  log("Deploying stuff...");

Tasks to run are specified on the command line. If a task has dependencies, those dependent tasks are run before the specified task. Specifying no tasks on the command-line will run the default task if one is configured.

Command-line usage

usage: grind <options> target1 target2 ...

valid options:
-h, --help    show targets but don't build
-d, --deps    display the dependencies of targets


pub global run grind <args>

will run the tool/grind.dart script with the supplied arguments.

API documentation

Documentation is available here.


This is not an official Google product.



A task based, dependency aware build system.


General file system routines, useful in the context of running builds. This includes the FileSet class, which is used for reasoning about sets of files.

Commonly used tools for build scripts, including for tasks like running the pub commands.