TH gives "Illegal binding of built-in syntax" error

If you try to splice in a definition that borrows an already existing Name using Template Haskell, GHC gives a confusing error message:

{-# LANGUAGE TemplateHaskell #-}
module Bug where

import Language.Haskell.TH

$(pure [ValD (VarP 'succ) (NormalB (ConE 'True)) []])

$ /opt/ghc/8.2.1/bin/runghc Bug.hs

Bug.hs:6:3: error: Illegal binding of built-in syntax: succ
  |
6 | $(pure [ValD (VarP 'succ) (NormalB (ConE 'True)) []])
  |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I'm not exactly sure what should happen here. My hunch was that my spliced-in succ would shadow the succ that's already in-scope. But in any case, the error message you get currently is quite awful, so at the very least that should be improved.

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Template Haskell
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