1. [neo@nixos:~/Forks/nixpkgs]$ nix-build -A haskellPackages.haskell-ide-engine
  2. error: Package ‘haskell-ide-engine-0.1.0.0’ in /home/neo/Forks/nixpkgs/pkgs/development/haskell-modules/hie-packages.nix:238 is marked as broken, refusing to evaluate.
  4. a) For `nixos-rebuild` you can set
  5. { nixpkgs.config.allowBroken = true; }
  6. in configuration.nix to override this.
  8. b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  9. { allowBroken = true; }
  10. to ~/.config/nixpkgs/config.nix.
  12. (use ‘--show-trace’ to show detailed location information)

uhmmm