bool to uint8 variable upgrade is not allowed

[jjranalli]

From this issue it seems like it should be possible upgrading a variable from bool to uint8 without triggering a New storage layout is incompatible error.

However, the error is being triggered and only workaround at the moment seem to be enabling the unsafeSkipStorageCheck flag.

Minimal repo to reproduce the issue: https://github.com/jjranalli/hardhat-upgradeable-storage-issue

@frangio

[frangio]

Changing from bool to uint8 is not allowed by default, you need to enable it with a comment in the source code:

/// @custom:oz-retyped-from bool
uint8 x;

I thought you were asking about Initializable.sol, which includes this flag as seen here.

Make sure to read the entry in the FAQ: How can I rename a variable, or change its type?