Problem building GHC

[Moritz Angermann]

Those errors in both logs seem fairly odd. The first one appears to be
mostly a missing libgmp, the second one looks like hsc2hs's template file
is missing, however hadrian should have a rule for that.

You can try to clean your tree and rebuild.

git clean -xfd
git submodule foreach git clean -xfd
git submodule update --init --recursive

./boot && ./configure
cabal v2-update
hadrian/build -j --flavour=Quick/boot

In general the instructions on https://ghc.dev are pretty good.

Cheers,
 Moritz

On Mon, Sep 20, 2021 at 8:50 AM Solomon Bothwell <ssbothwell at gmail.com>
wrote:

> Hi. I'm a Haskell developer and I have recently started exploring and
> building GHC, mainly with the hope of writing some small MRs for base.
>
> I use nixos and ghc.nix to setup a build environment. Last week I was able
> to build `ghc-8.10.7-release` with no trouble. I'm not sure what may have
> happened but I am unable to build either `ghc-8-10.7-release` or `master`
> this week. I tried deleting my fork and creating a new one but am getting
> the same results.
>
> For `master` I get this error:
> https://gist.github.com/ssbothwell/9693a919c521decf52503e9152b879b6
> For `ghc-8.10.7-release` I get this error:
> https://gist.github.com/ssbothwell/fb5c418b4ee509cf0ad95d4337381e9e
>
> I hope this is the right venue to be asking for help on this. Would it be
> better for me to write an issue on the ghc.nix github page?
>
> Thanks,
> Solomon.
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