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This package brings a simple way to automatically update release/installation files in a local directory.

It also comes with built-in CLI tools to easily generate a release bundle (Zip file) or serve release files for multiple platforms.


Since Dart can run in many native platforms (Linux/x64, macOS/x64/arm64, Windows/x86), it's not simple to manage all the different releases+platforms files that a compiled Dart application can have.

In the same way that modern Browsers, and many other applications, can have automatic builds and updates for multiple platforms, this package provides tools and an API to easily achieve that.

API Documentation

See the API Documentation for a full list of functions, classes and extension.


import 'dart:io';

import 'package:release_updater/release_updater_io.dart';

void main() async {
  var storage = ReleaseStorageDirectory('appx', Directory('/install/path'));
  var provider = ReleaseProviderHttp.baseURL('https://your.domain/appx/releases');

  var releaseUpdater = ReleaseUpdater(storage, provider);

  var version = await releaseUpdater.update();

  print('»  Updated to version: $version');

  var runResult = await releaseUpdater.runReleaseProcess('run.exe', ['-a']);

  var exitCode = runResult!.exitCode;
  print('»  Exit code: $exitCode');
  print('»  Result: ${runResult.stdout}');



You can implement your own ReleaseProvider or use just the built-in ReleaseProviderHttp class.

CLI Tools

  • release_updater: A CLI updater.

  • release_updater_server: A simple HTTP server to provide releases using the shelf package.


The release_updater is a CLI for the ReleaseUpdater class.

To build a release:

$> release_packer release_packer.json build ./source-dir ./releases-dir -Pupload-url=http://your-server:8090/ -Pupload-user=userx -Pupload-pass=pass123
  • The -P arguments are properties to the JSON configuration file (see %UPLOAD_URL% below).

Example of a release_packer.json file:

  "name": "appx",
  "version_from": "pubspec.yaml",
  "prepare": [
    {"dart_compile_exe": "bin/foo.dart"},
    {"windows_gui": "bin/foo.exe"}
  "finalize": [
    {"rm": "bin/foo.exe"},
      "upload_release": {
        "url": "%UPLOAD_URL%",
        "authorization": {
          "user": "%UPLOAD_USER%",
          "pass": "%UPLOAD_PASS%"
  "files": [
    {"hello.txt": "hello-world.txt"},
    {"bin/foo.exe": "."},
    {"libfoo-arm64.dylib": ".", "platform":  "^macos-arm64$"},
    {"libfoo-x64.dylib": ".", "platform":  "^macos-x64$"},
    {"": ".", "platform":  "^linux.*$"},
    {"libfoo.dll": ".", "platform":  "^windows.*$"}

JSON Format:

  • name: the application name, for the Release name.

  • version: the version of the Release.

  • version_from: the JSON or YAML file to provide the field version (if the parameter field is not provided).

  • platform: is a RegExp string to match the building platform. See the ReleasePlatform class.

  • Command types:

    • dart_pub_get: performs a dart pub get.
    • dart_compile_exe: performs a dart compile exe %dart_script.
    • dart: performs a dart %command.
    • windows_gui: Changes an executable Windows Subsistem to GUI.
    • command: performs a shell %command.
    • rm: Deletes a file.
    • upload_release: uploads the generated release.
      • url: release server base URL.
      • authorization: HTTP basic authorization.
        • username: authentication username.
        • password: authentication password.
  • files: each entry of files can be:

    • A String with a file path:
    • A Map with extra parameters:
      • A file with a renamed path and a specific platform.
        {"source/file/path.txt": "release/file/path", "platform": "^regexp"}
      • A file without rename it:
        {"source/file/path.txt": "."}
      • A directory tree:
        {"lib/resources/": "packages/pack_name/resources/"}
      • A file from a dart_compile_exe command:
        {"bin/client.exe": "client.exe", "dart_compile_exe": "bin/client.dart"}
      • A Windows executable file with the Windows Subsistem set to GUI:
        {"bin/client.exe": "client.exe", "windows_gui": true}


To serve a release directory:

$> release_updater_server releases-server-config.json

Config file:

  "releases-directory": "/path/to/releases",
  "port": 8090,
  "address": "",
  "upload-user": "userx",
  "upload-pass": "123456"
  • If the properties upload-user and upload-pass (with length >= 6) are defined, upload of files will be allowed.
    • All files are saved in the releases-directory without any sub-directory.
    • Upload errors can block an IP for 30min.
  • A high volume of requests can block an IP for 2min.


The official source code is hosted @ GitHub:

Features and bugs

Please file feature requests and bugs at the issue tracker.


Any help from the open-source community is always welcome and needed:

  • Found an issue?
    • Please fill a bug report with details.
  • Wish a feature?
    • Open a feature request with use cases.
  • Are you using and liking the project?
    • Promote the project: create an article, do a post or make a donation.
  • Are you a developer?
    • Fix a bug and send a pull request.
    • Implement a new feature, like other training algorithms and activation functions.
    • Improve the Unit Tests.
  • Have you already helped in any way?
    • Many thanks from me, the contributors and everybody that uses this project!

If you donate 1 hour of your time, you can contribute a lot, because others will do the same, just be part and start with your 1 hour.


Graciliano M. Passos: gmpassos@GitHub.


Apache License - Version 2.0


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