This would support being installed by root by a package manager. This would require:

• Providing an upgrade mechanism that is not dependent on git
• Allow the tool to determine its version without calling git commands that may write to .git
• Provide Flutter SDK version resolution (e.g. flutter --version) not dependent on git tags
• Moving the Flutter cache directory outside of the repo
• Tracking the Flutter SDK version file outside the repo (perhaps in the cache?)
• Ensuring that pub does not try to write to the repo while doing pub get