gistfile1.txt

warning: Nix search path entry '/nix/var/nix/profiles/per-user/root/channels/nixpkgs' does not exist, ignoring
warning: Nix search path entry '/nix/var/nix/profiles/per-user/root/channels' does not exist, ignoring
error: Package ‘stylish-haskell-0.10.0.0’ in /nix/store/h2bwswpnh56cnr99rxvvjckgm17km0ja-nixpkgs-20.03pre211462.0c960262d15/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix:234135 is marked as broken, refusing to evaluate.

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowBroken = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowBroken = true; }
to ~/.config/nixpkgs/config.nix.

(use '--show-trace' to show detailed location information)

haskell

{
  packageOverrides = super: let self = super.pkgs; in
                            {
                              allowBroken = true;
                              haskellEnv = self.haskell.packages.ghc865.ghcWithHoogle
                                (haskellPackages: with haskellPackages; [
                                  # libraries
                                  # editor tools
                                  stylish-haskell hlint hindent brittany prettyprinter prettyprinter-ansi-terminal
                                  ghcid ghc-mod hpack hasktags
                                  # tools
                                  cabal-install
                                ]);
                            };
}