Verify canary release

• I verified that the issue exists in the latest Turborepo canary release.

Link to code that reproduces this issue

don't have a link

Which canary version will you have in your reproduction?

.

Environment information

CLI:
   Version: 2.4.4
   Path to executable: /Users/***/dev/***/node_modules/turbo-darwin-arm64/bin/turbo
   Daemon status: Running
   Package manager: berry

Platform:
   Architecture: aarch64
   Operating system: macos
   WSL: false
   Available memory (MB): 5836
   Available CPU cores: 10

Environment:
   CI: None
   Terminal (TERM): xterm-256color
   Terminal program (TERM_PROGRAM): WarpTerminal
   Terminal program version (TERM_PROGRAM_VERSION): v0.2025.07.02.08.36.stable_02
   Shell (SHELL): /bin/zsh
   stdin: false

Expected behavior

The cache should not be reused between different operating systems

Actual behavior

Turbo uses macos cache on ci (ubuntu)

To Reproduce

{
  "globalEnv": ["OSTYPE"],
  "envMode": "loose"
}

Additional context

I have a turbo repo setup that needs to execute some platform-specific tasks, so I've put the OSTYPE environment variable in globalEnv in turbo.json.

Locally, OSTYPE evaluates to darwin24.0 and in CI it evaluates to linux-gnu. Yet, a task on CI actually restored a cache that has some darwin binaries, which in turn failed the deployment.