Hi all, It seems to me that UseSandbox is slightly strangely defined at the moment. It's currently defined as data UseSandbox = UseSandbox FilePath | NoSandbox but it seems to me that it would be better to define it such that it actually contains relevant information about the sandbox if the UseSandbox constructor case instead of just the filepath. On the one hand this would require a separate "read-the-sandbox-information-we-need" function somewhere before individual commands run, but that would give us the opportunity to actually give relevant warnings in various significant cases; see for example https://github.com/haskell/cabal/issues/2381 Am I missing something which necessitates using only the FilePath? (Perhaps some dependence on sub-command switches, or similar?) Any thoughts, comments...? Regards,