bug#65460: ghc/ghci are broken

[(]

Jonas via Bug reports for GNU Guix <bug-guix@gnu.org> writes:
> And compiling a hello-world program with ghc gives me:
>
> [1 of 1] Compiling Main             ( hello.hs, hello.o )
>
> <no location info>: error:
>      Warning: Couldn't figure out C compiler information!
>               Make sure you're using GNU gcc, or clang

At the risk of stating an obvious thing that you've probably already
tried; is `gcc-toolchain` available in the environment?

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