[ADP-3350] Fix `Cardano.Wallet.Read.Block.SlotNo`

cardano-foundation / cardano-wallet

HTTP server & command-line for managing UTxOs and HD wallets in Cardano.

Apache License 2.0

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[ADP-3350] Fix `Cardano.Wallet.Read.Block.SlotNo` #4535

Closed HeinrichApfelmus closed 3 months ago

HeinrichApfelmus commented 3 months ago

This pull request fixes the Cardano.Wallet.Read.Block.SlotNo module which encountered some difficulties with type class resolution and orphan instances, to the point where I suspected a compiler bug.

I have also added NoThunks and Generic instances for the Cardano.Wallet.Read.SlotNo type in preparation for future pull requests.

Issue Number

Discovered during ADP-3350