Closed YuMingLiao closed 6 years ago
I just tested locally with stack, and got the same error as you did, so I updated the resolver version to the latest nightly, which indeed works on my local machine.
I'm not familiar with the ways of nix -- how should I go about fixing this? Or will the updated stackage resolver somehow percolate into the nix store?
I found a discussion about updating haskell packages in nix. But I don't really get it...
Thanks for confirmation!
I think the actual solution was this: https://github.com/kcsongor/generic-lens/pull/60
Thanks!
nixpkgs included the #60 patch in master. I just submitted a pull request to get this into 18.09 as well.
I `nix-haskell ghc843 generic-lens' and get error.
I git clone it and stack build. It says ghc841 is missing. My nixos-unstable doesn't have ghc841.
Then I changed resolver to
resolver: nightly-2018-08-09
(It's ghc843) andstack test
worked.Should the resolver be updated? Or it's just an nixos issue?