The instructions are quite clear. Alas, when I try to reproduce the steps using my home-build compiler (for which I mean set the `with-compiler` in `cabal.project` to the stage2 compiler obtained by Hadrian), I get:
> cabal new-install --lib aeson Distribution/Client/CmdInstall.hs:(361,18)-(363,72): Non-exhaustive patterns in lambda Do you have any idea of what I might be doing wrong? Thanks in advance, Alejandro El mar., 10 sept. 2019 a las 12:32, Ben Gamari (<[email protected]>) escribió: > Alejandro Serrano Mena <[email protected]> writes: > > > Dear GHC devs, > > As part of our work in "quick look impredicativity", we would like to > test > > whether any package breaks. I've read about "head.hackage" as a way to > test > > this fact, but I could not find any information. > > > > Could somebody point me in the right direction? If it does not exist yet, > > I'll try to summarize whatever I learn in the wiki for future reference. > > > Hi Alejandro, > > Indeed I have a pair of yet-to-be-published blog posts intended to > discuss exactly this. See [1] and [2]. Do let me know if you have any > questions. > > Cheers, > > - Ben > > > [1] https://gitlab.haskell.org/ghc/homepage/merge_requests/16/diffs > [2] https://gitlab.haskell.org/ghc/homepage/merge_requests/29/diffs >
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