@Munksgaard It looks like sexp-grammar depends on invertible-grammar, so you'll have to mark that as non-broken as well.

Also, I'd suggest changing the commit message to start with haskellPackages.sexp-grammar: instead of haskell-sexp.

@cdepillabout Thanks for the comments, I've pushed a new commit.

I don't understand the error coming from grahamofborg-eval. Do you have any idea what's gone wrong, @cdepillabout?

@Munksgaard I wrote a short blog post on this error: https://functor.tokyo/blog/2020-06-02-evaluating-nixpkgs

However this error wasn't caused by this PR, so I think this should probably be okay as-is.

Great stuff, thank you @cdepillabout. Do you know how long it usually takes for haskell-updates to be merged into nightly?

@Munksgaard peti usually merges it in about once every week or so. If you watch the Haskell tag here in nixpkgs, peti will probably eventually make a PR for merging it in, and that PR will contain the commits here.