[Haskell-beginners] How to install new GHC ?

[Francesco Ariis]

On Tue, Dec 12, 2017 at 03:38:30PM +0200, Baa wrote:
> 1. GHC 8.2.2 is here:
>    ~/.stack/programs/x86_64-linux/ghc-tinfo6-8.2.2/bin
> 2. done
> 3. yes, it's 8.2.2
> 4. `cabal new-build` said to me call `cabal update`, I done it, then run
> it again and got:
>     $ cabal new-build
>     Resolving dependencies...
>     cabal: Could not resolve dependencies:
>     trying: XXX-0.5.0.0 (user goal)
>     next goal: YYY-utils (dependency of XXX-0.5.0.0)
>     Dependency tree exhaustively searched.

Good, we're almost there!

I strongly suspect it is a base constraint. Go in your something.cabal
file, build-depends section(s) and modify it from:

    base >= 4.somenumber && < 4.10

to

    base >= 4.somenumber && < 4.11

And try cabal new-build again. If that fails, please include the content
of your `build-depends:` portion in your message
-F