Single module takes 2 minutes 40 seconds to compile

Summary

Cardano.Api.ProtocolParameters module takes 2 minutes and 40 seconds to compile.

Steps to reproduce

The function responsible for the long compile time is identified by this PR: https://github.com/input-output-hk/cardano-node/pull/2780/files

Build the project from this branch. Then undo the last commit and build again. The first module built will be the offending module. Manually measure how long it takes to compile this module without the last commit.

Expected behavior

The module should compile within seconds.

Environment

GHC version used: 8.10.4

Optional:

Operating System: All operating systems.
System Architecture: Intel

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information