Support for Flutter 3.0

[johannesvedder]

The current setup (at least designer) does not build with Flutter v3.0. The following external (sub-)dependencies are affected:

• tba

[nstrelow]

I'll try to make the migration for this one and I'll try to document the process, especially updating packages and deploying :)

Playing around adding dependabot, so it's easier to upgrade dependencies.

[nstrelow]

This is the dart SDK, the newest version is 2.17 I think. Not the new Flutter sdk :)

You can think of it as the version of the language. app needs at least dart 2.7.0 sdk for all language features and so on. I need to upgrade this to a newer one, but for that we need to enable null safety, which is a huge migration.

[johannesvedder]

Woops, I missed that. I wasn't really sure if this needs to be upgraded. Is this handled by melos upgrade aswell?

[nstrelow]

Usually this never needs to get upgraded, except if you are a package you are using needs a newer dart SDK version.

So you have to do it manually, but usually only when you get an error, saying you need to upgrade for X.

[nstrelow]

I generally do version upgrades via melos. I'll try to document it or make a video.

[nstrelow]

some here, changelog are generated by melos using the conventional commits: https://www.conventionalcommits.org/en/v1.0.0/

Basically I use fix, feat, chore in commits like
fix: Upgrade deps, feat: new feature, docs: update readme, chore something else

fix pushes the patch package version e.g. 1.10.13->1.10.14, feat, the minor: 1.10.13 -> 1.11.0

if you type BREAKING CHANGE somewhere in the commit it'll upgrade the major version 1.10.13->2.0.0

[nstrelow]

The flutter_form_builder is the problem. It has a lot of dependencies, which are not updated that frequently, which then breaks new flutter versions.

Issue: flutter-form-builder-ecosystem/flutter_form_builder#1021

It is a subdependency: [flutter_chips_input](https://github.com/danvick/flutter_chips_input) by the same author.

Here is a PR fixing it, which has not been merged or published. To use Flutter 3.0.0 with designer, I would then set this as a dependency override. See my other PR.

dependency_overrides:
  flutter_chips_input:
    git: https://github.com/jhaglund/flutter_chips_input.git

[nstrelow]

Aaaand flutter_iconpicker is problematic as well. It has a hardcoded list of all icons, which change with each release and break the whole package each time -.- Very annoying, might be worth to replace at some point.

[johannesvedder]

Okay, thanks for the review. We can just close this one when #45 is merged.