[BUG] Custom Flutter Versions are not allowed anymore.

[Bassiuz]

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Describe the bug
Because of the changes of how Flutter renders images on different processor architectures, we want to toggle the FVM version used by our CI to x64_86. Before FVM 3 we were able to download a x86_64 version of flutter, place it in the versions folder for FVM named 3.19.0_x86_64 for example and run fvm use 3.19.0_x86_64. However since the upgrade to FVM 3, the name of the Flutter version gets checked to the actual flutter version and get the following options to resolve:

┌───────────────────────────────────────────────────────────────────────────────────┐
│ ⚠ Version mismatch detected: cache version is 3.19.0, but expected 3.19.0_x86_64. │
└───────────────────────────────────────────────────────────────────────────────────┘
This can occur if you manually run "flutter upgrade" on a cached SDK.

? How would you like to resolve this? ›                                                                                                                                                                                                                      
❯ Move 3.19.0 to the correct cache directory and reinstall 3.19.0_x86_64                                                                                                                                                                                     
  Remove incorrect version and reinstall 3.19.0_x86_64     

However; moving it to the 'correct' folder name or reinstalling isn't a option here, as I want the x86_64 version to be available separately.

To Reproduce
Steps to reproduce the behavior:

1. Go to terminal..
2. Run the provided x86_64 script to install a intel version of Flutter to the versions folder (Or manually download and install one to the folder)
3. Run fvm use 3.19.0_x86_64
4. See that there is no available option that suits this problem anymore.

Expected behavior
I expect that there would be a way to just use the flutter version in the provided folder without checking if the version is correct

Desktop (please complete the following information):

• OS: MacOS Somona
• FVM Version 3.0.9

Additional context

My install-x86_64.sh script

#!/bin/sh

echo "Checking x86_64 Flutter version: $1"

FVM_VERSION_DIR="$HOME/fvm/versions"
FVM_X86_64_VERSION="$FVM_VERSION_DIR/$1_x86_64"
FVM_DOWNLOAD="$FVM_VERSION_DIR/flutter_sdk_x86.zip"

# Check if FVM x86_64 is installed
if [ -d "$FVM_X86_64_VERSION" ]; then
    echo "Flutter version $1 is already installed for x86_64"
    exit 0
    else
      echo "Installing Flutter version $1 for x86_64"
      curl "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_$1-stable.zip" -o "$FVM_DOWNLOAD"
      if [ -f "$FVM_DOWNLOAD" ]; then
        unzip "$FVM_DOWNLOAD" "flutter/*" -d "$FVM_X86_64_VERSION"
        # shellcheck disable=SC2164
        if [ -d "$FVM_X86_64_VERSION/flutter" ]; then
          cd "$FVM_X86_64_VERSION/flutter"
          # shellcheck disable=SC2035
          mv * ../
          [ -d “${FVM_X86_64_VERSION}/flutter” ] && rm -rf “$FVM_X86_64_VERSION/flutter”
          [ -d “${FVM_DOWNLOAD}” ] && rm -rf “$FVM_DOWNLOAD”
          exit 0
        fi
      fi
fi

[Bassiuz]

As an addition; prefixing it with custom_ to create a Custom Flutter version also does not skip the version checking

[Bassiuz]

I provided a pull request with some additions to the use command. This supports using the force command to skip handling mismatches, as well skipping handling mismatches on custom versions.

[Bassiuz]

Fixed by #654