Issue running new projects if an older environment (pre null safety) exists

[johnwiese-ms]

I have an app that still uses Flutter 3.7.12 so I have that as an "old" environment. I also have the latest as "stable". At some point not that long ago I can no longer run newer (stable) projects. I see this output:

Resolving dependencies...
The current Dart SDK version is 2.19.6.

Because volleyball_hub requires SDK version >=3.3.4 <4.0.0, version solving failed.
pub get failed

The only way to resolve it is to delete the "old" environment.

[johnwiese-ms]

A little more detail is given when I run from terminal:

pub get failed
command: "/Users/johnwiese/.puro/envs/old/flutter/bin/cache/dart-sdk/bin/dart __deprecated_pub --color
--directory . get --example"
pub env: {
  "FLUTTER_ROOT": "/Users/johnwiese/.puro/envs/old/flutter",
  "PUB_ENVIRONMENT": "flutter_cli:get",
  "PUB_CACHE": "/Users/johnwiese/.puro/shared/pub_cache",
}
exit code: 1

johnwiese@Johns-MacBook-Pro volleyball_hub % puro ls
[i] Environments:
    * stable (stable / 3.22.3 / b0850beeb2)
      beta   (not installed)
      master (not installed)
      old    (stable / 3.7.12 / 4d9e56e694)
      

Notice though that the output says FLUTTER_ROOT is set to "old" and not "stable", which is why I assume I am getting the error??

[johnwiese-ms]

If I run puro version I get this output:

johnwiese@Johns-MacBook-Pro volleyball_hub % puro version
[!] Other Flutter or Dart installations detected
    Puro recommends removing the following from your PATH:
    * /Users/johnwiese/.puro/envs/old/flutter/bin//dart
    * /Users/johnwiese/.puro/envs/old/flutter/bin//flutter
[i] Puro 1.4.6 (distribution/darwin-x64)
    Dart 3.3.3 (stable) (Tue Mar 26 14:21:33 2024 +0000) on "macos_x64"

The problem is the only path setting I can find is in my .zshrc and doesn't have any of those entries:

export PATH="$PATH:$HOME/.puro/bin" # Added by Puro
export PATH="$PATH:$HOME/.puro/shared/pub_cache/bin" # Added by Puro
export PATH="$PATH:$HOME/.puro/envs/default/flutter/bin" # Added by Puro
export PURO_ROOT="/Users/johnwiese/.puro" # Added by Puro
export PUB_CACHE="/Users/johnwiese/.puro/shared/pub_cache" # Added by Puro
PATH=$PATH:/users/johnwiese/Library/Android/sdk