testfx/global.json

{
  "tools": {
    "dotnet": "9.0.100-preview.7.24407.12",
    "runtimes": {
      "dotnet": [
        "3.1.32",
        "6.0.33",
        "7.0.20",
        "8.0.8"
      ]
    },
    "vs": {
      "version": "17.8.0"
    }
  },
  "sdk": {
    "version": "9.0.100-preview.7.24407.12",
    "allowPrerelease": true,
    "rollForward": "latestFeature"
  },
  "msbuild-sdks": {
    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.24416.2",
    "MSBuild.Sdk.Extras": "3.0.44"
  }
}