Brew update fails on tapping homebrew/core

[jarrad-c]

On a new installation, brew update fails to tap homebrew/core due to Cabal deprecation on ghc.

Full output:

➜ brew update
==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
  https://github.com/Homebrew/brew#donations
==> Tapping homebrew/core
Cloning into '/opt/brew/Library/Taps/homebrew/homebrew-core'...
remote: Enumerating objects: 61, done.
remote: Counting objects: 100% (61/61), done.
remote: Compressing objects: 100% (41/41), done.
remote: Total 1007386 (delta 35), reused 37 (delta 20), pack-reused 1007325
Receiving objects: 100% (1007386/1007386), 355.52 MiB | 3.51 MiB/s, done.
Resolving deltas: 100% (693917/693917), done.
Error: Invalid formula: /opt/brew/Library/Taps/homebrew/homebrew-core/Formula/[email protected]
[email protected]: Calling include Language::Haskell::Cabal is disabled! There is no replacement.
Please report this issue to the homebrew/core tap (not Homebrew/brew or Homebrew/core):
  /opt/brew/Library/Taps/homebrew/homebrew-core/Formula/[email protected]:4

Error: Cannot tap homebrew/core: invalid syntax in tap!
Error: Failure while executing; `/opt/brew/bin/brew tap homebrew/core` exited with 1.

[SMillerDev]

You've pinned an unsupported version of GHC. You'll need to uninstall it to fix this issue.