[BUG] Could not find bin/melos.dart in package melos.

[hpelitebook745G2]

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• You have read our FAQ
• If you have used flutter. Please install correctly, run pub cache repair. Close the terminal and try again.
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• Run fvm doctor if possible and add the output to the issue.

Describe the bug
I installed fvm and melos (globally), and once I ran flutter pub cache clean, and then reinstalled melos, I can no longer use it.

To Reproduce
Steps to reproduce the behavior:

1. Install fvm, by running:

curl -fsSL https://fvm.app/install.sh | bash
brew tap leoafarias/fvm
brew install fvm

2. Check if installed, run which fvm:

/Users/testdev/fvm/versions/3.22.2/bin/flutter

3. Install melos, by running dart pub global activate melos:

Package melos is currently active at version 6.3.2.
Downloading packages... . 
The package melos is already activated at newest available version.
To recompile executables, first run `dart pub global deactivate melos`.
Installed executable melos.
Activated melos 6.3.2.

4. Check path, by running echo $PATH:

<some_path>:/Users/testdev/fvm/default/bin:/Users/testdev/.pub-cache/bin:<some_path>

5. When I run melos -v in the root of my monorepo:

Could not find `bin/melos.dart` in package `melos`.

6. Check /Users/testdev/.pub-cache/bin and indeed there is not melos.dart but rather a melos Unix Executable File:

Logs
fvm doctor result:

FVM Doctor:                                                                                                                                                                            
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Project:
┌─────────────────────────────┬───────────────────────────────────────────────────────────┐
│ Project                     │ test_proj                                        │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Directory                   │ /Users/testdev/Documents/DEVELOPMENT/test_proj │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Active Flavor               │ None                                                      │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Is Flutter Project          │ No                                                        │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Dart Tool Generator Version │ 3.4.3                                                     │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Dart tool version           │ 3.22.2                                                    │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ .gitignore Present          │ Yes                                                       │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Config Present              │ Yes                                                       │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Pinned Version              │ 3.22.2                                                    │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Config path                 │ .fvmrc                                                    │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Local cache dir             │ .fvm/versions                                             │
├─────────────────────────────┼───────────────────────────────────────────────────────────┤
│ Version symlink             │ .fvm/versions/3.22.2                                      │
└─────────────────────────────┴───────────────────────────────────────────────────────────┘


IDEs:
┌────────────────────────────────┬─────────────────────────────────────────────────────┐
│ IDEs                           │ Value                                               │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ VSCode                         │                                                     │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ dart.flutterSdkPath            │ .fvm/versions/3.22.2                                │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ Matches pinned version:        │ true                                                │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ IntelliJ (Android Studio, ...) │                                                     │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ IntelliJ (Android Studio, ...) │ No local.properties file found in android directory │
├────────────────────────────────┼─────────────────────────────────────────────────────┤
│ IntelliJ (Android Studio, ...) │ No .idea folder found                               │
└────────────────────────────────┴─────────────────────────────────────────────────────┘

Environment:
┌───────────────────────┬──────────────────────────────────────────────────┐
│ Environment Variables │ Value                                            │
├───────────────────────┼──────────────────────────────────────────────────┤
│ Flutter PATH          │ /Users/testdev/fvm/versions/3.22.2/bin/flutter │
├───────────────────────┼──────────────────────────────────────────────────┤
│ Dart PATH             │ /Users/testdev/fvm/versions/3.22.2/bin/dart    │
├───────────────────────┼──────────────────────────────────────────────────┤
│ FVM_CACHE_PATH        │ N/A                                              │
├───────────────────────┼──────────────────────────────────────────────────┤
│ FVM_USE_GIT_CACHE     │ N/A                                              │
├───────────────────────┼──────────────────────────────────────────────────┤
│ FVM_GIT_CACHE_PATH    │ N/A                                              │
├───────────────────────┼──────────────────────────────────────────────────┤
│ FVM_FLUTTER_URL       │ N/A                                              │
├───────────────────────┼──────────────────────────────────────────────────┤
│ FVM_PRIVILEGED_ACCESS │ N/A                                              │
├───────────────────────┼──────────────────────────────────────────────────┤
│ Flutter PATH          │ /Users/testdev/fvm/versions/3.22.2/bin/flutter │
├───────────────────────┼──────────────────────────────────────────────────┤
│ Dart PATH             │ /Users/testdev/fvm/versions/3.22.2/bin/dart    │
└───────────────────────┴──────────────────────────────────────────────────┘
┌──────────────┬──────────────────────────────────────────────────────────────────┐
│ Platform     │ Value                                                            │
├──────────────┼──────────────────────────────────────────────────────────────────┤
│ OS           │ macos Version 15.2 (Build 24C101)                                │
├──────────────┼──────────────────────────────────────────────────────────────────┤
│ Dart Locale  │ en-SG                                                            │
├──────────────┼──────────────────────────────────────────────────────────────────┤
│ Dart runtime │ 3.2.6 (stable) (Wed Jan 24 13:41:58 2024 +0000) on "macos_arm64" │
└──────────────┴──────────────────────────────────────────────────────────────────┘

Possible connected issue

[cristiano2lopes]

@hpelitebook745G2 I am not using fvm but had a similar problem so this is not fvm specific, but it can be specific to using multiple flutter/dart versions for global tools installations.

I solved it by deleting the project local .dart_tool folder that had one melos snapshot installed. Hope it helps, basically rm -rf .dart_tool or rm the snapshot specifically.

[vincevargadev]

I downgraded to 6.2.0 and I didn't have the issue anymore. I'm not using fvm on this project, so it could be a melos issue.

dart pub global activate melos 6.2.0

[HenriqueNas]

@hpelitebook745G2 I am not using fvm but had a similar problem so this is not fvm specific, but it can be specific to using multiple flutter/dart versions for global tools installations.

I solved it by deleting the project local .dart_tool folder that had one melos snapshot installed. Hope it helps, basically rm -rf .dart_tool or rm the snapshot specifically.

This worked for me !!
I am using asdf to manage flutter versions