fvm VS pub

2.2 - FVM

Repositorio Github

For Flutter, if you're not working on other projects you can just downgrade your installation to the same version used on the course using the flutter channel command on the command line. If you have other projects then you can use FVM to manage multiple versions of Flutter.

I'm a frontend developer and recently have some work to do with Flutter, need to switch Flutter version in different projects. For Nodejs we have nvm to manage and switch node version. I've tried the dart-version fvm, but it does not work similar to nvm. So I released a shell-version fvm. Anyone who needs to work with multi flutter version and run into problems with dart-version fvm can have try with this.

fvm had a similar issue. This was the commit that fixed it, FYI: https://github.com/fluttertools/fvm/pull/324/files

I think the best and easiest way to change flutter version is Flutter Version Manager.

Last week I was eager to check out a little Flutter application built by Lucas Schuster. I was especially interested in trying the Flutter Desktop support for Linux. After installing Flutter via fvm, I checked out his Git repository and issued the following command for building the Flutter app on Linux:

It is good when you are can get updates and bug fixes of libs and Flutter. If anyone will try to build your project on older Flutter version, they can install something like FVM of provide path no new version of framework manually.

Agreed. Version resolution is the interesting problem.

Most package managers use a SAT solver to resolve dependencies. The Dart team has a detailed write up on their SAT-based approach which is worth a read [1]. For contrast, Russ Cox presents an algorithm that doesn't use a SAT solver (intended for Go) [2].

[1] https://github.com/dart-lang/pub/blob/master/doc/solver.md

[2] https://research.swtch.com/vgo-mvs

Official documentation.

As I understand Custom package repositories it's possible to host one's own package repository. The Repository Specification is public, but dart.dev only references cloud based paid services like Cloudsmith and OnePub.

As u/Which-Adeptness6908 already pointed out, the repository specification is small, and that's all you need to implement a server: https://github.com/dart-lang/pub/blob/master/doc/repository-spec-v2.md

https://docs.github.com/en/code-security/secret-scanning/sec...

A bit sad, they don't publish the list of regexes, etc.

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I added a similar thing to the package manager for Dart / Flutter, because we saw users accidentally publishing secrets. That code is public, it relies on regexes and entropy estimation:

https://github.com/dart-lang/pub/blob/eb8ee21a089ebe0f2c2dd8...

It was heavily inspired by the researchers in:

Heres are some issues I've faced when trying with the dart-version cli: - The installation - dart pub global activate needs to have flutter/dart global installed already. - Global activated fvm cli got invalid after flutter upgrade, see issue - The cli does not work with customized fork of flutter. - You should run fvm flutter , not flutter , this changes CI/CD workflow

This will add the args dependency in your pubspec file. We used the Darts package manager pub to add this dependency.