[ghc-lib] internal error after removal of integer-simple

[Shayne Fletcher]

On Fri, Jun 19, 2020 at 5:55 PM Shayne Fletcher <shayne.fletcher at daml.com>
wrote:

> With the recent MR that removes integer-simple in favor of ghc-bignum, I
> find that I get a runtime failure when I try to use ghc-lib to generate
> core:
> ```
> # Running: stack     --no-terminal exec -- mini-compile
> examples/mini-compile/test/MiniCompileTest.hs
>
> examples/mini-compile/test/MiniCompileTest.hs:66:5: error:
>     * GHC internal error: `One' is not in scope during type checking, but
> it passed the renamer
>       tcl_env of environment: [628 :-> ATcTyCon TrName :: *,
>                                62b :-> APromotionErr RecDataConPE,
>                                62e :-> APromotionErr RecDataConPE]
>     * In the definition of data constructor `TrNameS'
>       In the data declaration for `TrName'
>    |
> 66 |   = TrNameS Addr#  -- Static
>    |     ^^^^^^^^^^^^^
> mini-compile: GHC internal error: `One' is not in scope during type
> checking, but it passed the renamer
> tcl_env of environment: [628 :-> ATcTyCon TrName :: *,
>                          62b :-> APromotionErr RecDataConPE,
>                          62e :-> APromotionErr RecDataConPE]
> ```
>
> Anyone have any pointers on what is going wrong and what I should be
> looking at?
>

Breaks at commit `96aa57878fd6e6a7b92e841a0df8b5255a559c97` (
https://gitlab.haskell.org/ghc/ghc/-/commit/96aa57878fd6e6a7b92e841a0df8b5255a559c97)
"Update compiler".

-- 
*Shayne Fletcher*
Language Engineer */* +1 917 699 7663
*Digital Asset* <https://digitalasset.com/>, creators of *DAML
<https://daml.com/>*

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