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 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. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs