9.2.3 GHCi "No skolem info" error from deriving-via with newtyped function

Summary

Possibly related to #14628. Given the following definition:

import Control.Monad.Trans.Reader (ReaderT(ReaderT))

newtype FooT m a = FooT
  { runFooT :: Int -> m a
  } deriving (Functor) via (ReaderT Int m)

GHC 9.2.3 will build this without issue, but when it is loaded into ghci, the following No skolem info error is produced for the deriving line:

error:ghc-9.2.3: panic! (the 'impossible' happened)
  (GHC version 9.2.3:
        No skolem info:
  [k_a1mj]
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/GHC/Utils/Panic.hs:181:37 in ghc:GHC.Utils.Panic
        pprPanic, called at compiler/GHC/Tc/Errors.hs:2912:17 in ghc:GHC.Tc.Errors

Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug


<no location info>: error:
    Could not load module ‘Test.Package.F’
    It is a member of the hidden package ‘test-package-f-0.0.0.0’.
    You can run ‘:set -package test-package-f’ to expose it.
    (Note: this unloads all the modules in the current scope.)

8.10.7 ghci has no issue loading the definition.

Steps to reproduce

A repro repo is available here: https://github.com/jship/ghci-bug-deriving-via. This repo has 6 minimal test packages in two groups: packages A-C use GHC 8.10.7 and packages D-F use GHC 9.2.3.

All packages can be built via the repo's included build.sh script. For ghci testing: cd <specific-package-dir> && stack ghci

Expected behavior

I expect the loading of test-package-f into ghci (e.g. via stack ghci from the test-package-f directory) to be successful.

Environment

• GHC version used: Tested on 8.10.7 and 9.2.3. 9.2.3 is where the problem shows up.

Optional:

• Operating System: macOS 12.3 and WSL2 (GNU/Linux 5.10.16.3-microsoft-standard-WSL2 x86_64)