Interface-file decls for large tuples

I'm in the process of updating a large code base for GHC 8.2, and I have the following error (with -ddump-if-trace):

...
Starting fork { Declaration for $fCT2
Loading decl for $fCT2
updating EPS_
Considering whether to load GHC.Prim {- SYSTEM -}
Considering whether to load GHC.Prim {- SYSTEM -}
} ending fork Declaration for $fCT2
Need decl for (%,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,%)
Considering whether to load GHC.Classes {- SYSTEM -}
Considering whether to load GHC.Types {- SYSTEM -}
checkWiredInTyCon Double
Crypto.Lol.Applications.Tests.SHETests
Considering whether to load GHC.Types {- SYSTEM -}
Starting fork { Class op ip a ty
} ending fork Class op ip a ty
...

Can't find interface-file declaration for type constructor or class ghc-prim-0.5.1.0:GHC.Classes.(%,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,%)
      Probable cause: bug in .hi-boot file, or inconsistent .hi file
      Use -ddump-if-trace to get an idea of which file caused the error

The code in question involves a poly-kinded, promoted 8-tuple, though I have no idea where GHC is coming up with a 64-tuple.

Since I'm updating a large library, I've been unable to produce a small example so far. I can make the code compile by simplifying it in various ways, so aside from this problem, the code works with 8.2.1. This issue is currently preventing me from updating my code base to 8.2.1.

Trac metadata

Trac field	Value
Version	8.2.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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