GHC 9.4.2 has been out for more than a month but I still cannot get a hold of it on NIxOS. It is obviously not in the stable channel, but if I try the nixos-unstable channel I actually get GHC 8.10.7 instead of 9.4.2. Here’s the command that I’m using: $ sudo nix-channel --list nixos https://nixos…

Hmm, I didn’t find an answer directly in that thread, but it does link to the FAQ which has two ways to do it: NIX_PATH=nixpkgs=https://github.com/NixOS/nixpkgs/archive/release-17.09.tar.gz nix-shell -p $software or nix-shell -I nixpkgs=channel:nixpkgs-unstable -p somepackage I think the latter …

How to get GHC 9.4.2 on NixOS?

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nixinator October 1, 2022, 5:53pm 9

i’m in the jungle right now, but this may help you