[BUG] versions not auto update

[jopmiddelkamp]

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Describe the bug
We've got our project setup with Melos i.c.w. dart workspaces. The default setting for updateMelosSettings is true but when we run fvm use 3.38.5 in our root (workspace) folder the melos version is not updating and keeps showing sdkPath: .fvm/versions/3.38.3. And would it also be possible to have the sdk and flutter auto update under the environment?

workspace, pubspec.yaml:

name: beans_workspace
publish_to: none
workspace:
  - ...

environment:
  sdk: ^3.10.0 # <-- this would be nice too
  flutter: ^3.38.0 # <-- this would be nice too

dependencies:
  ...

dev_dependencies:
  ...

dependency_overrides:
  ...

melos:
  sdkPath: .fvm/versions/3.38.3 # <-- this

  scripts:
    ...

To Reproduce
Steps to reproduce the behavior:

1. Checkout this repo: https://github.com/Beans-BV/melos_issue
2. Go to terminal..
3. Run fvm use 3.38.5...
4. Check if the flutter version under /pubspec.yaml -> melos -> sdkPath is updated

Expected behavior
To update the sdkPath to the correct symlink folder.

Desktop (please complete the following information):

• OS: MacOS
• FVM Version 4.0.5

Additional context

flutter doctor -v
[✓] Flutter (Channel stable, 3.38.5, on macOS 26.1 25B78 darwin-arm64, locale en-GB) [391ms]
    • Flutter version 3.38.5 on channel stable at /Users/jopmiddelkamp/fvm/versions/stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f6ff1529fd (3 weeks ago), 2025-12-11 11:50:07 -0500
    • Engine revision 1527ae0ec5
    • Dart version 3.10.4
    • DevTools version 2.51.1
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations,
      enable-native-assets, enable-swift-package-manager, omit-legacy-version-file, enable-lldb-debugging

[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0) [1,311ms]
    • Android SDK at /Users/jopmiddelkamp/Library/Android/sdk
    • Emulator version 36.3.10.0 (build_id 14472402) (CL:N/A)
    • Platform android-36.1, build-tools 36.1.0
    • Java binary at: /Users/jopmiddelkamp/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.8+-14196175-b1038.72)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 26.2) [6.4s]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 17C52
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [8ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Connected device (4 available) [6.3s]
    • sdk gphone64 arm64 (mobile)         • emulator-5554                        • android-arm64  • Android 16 (API 36) (emulator)
    • iPhone SE (3rd generation) (mobile) • 21B10044-C4D0-4B32-9F29-CC68CED43183 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-17-5 (simulator)
    • macOS (desktop)                     • macos                                • darwin-arm64   • macOS 26.1 25B78 darwin-arm64
    • Chrome (web)                        • chrome                               • web-javascript • Google Chrome 

[✓] Network resources [521ms]
    • All expected network resources are available.