{ pkgs ? import (fetchGit (import ./pkgs.nix)) {} , compiler ? "ghc822" }: pkgs.haskell.packages.${compiler}.developPackage { root = ./.; name = "brittany"; overrides = with pkgs.haskell.lib; self: super: { }; source-overrides = { ghc-exactprint = "0.5.8.0"; }; }