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{ pkgs ? import <nixpkgs> {
    overlays = [ (import ./pkgs) ];
  }
}:

let

  haskellPackages = pkgs.haskellPackages.override {
    overrides = self: super: {
      anissue = (super.callCabal2nix "anissue" ./. { }).overrideAttrs (oldAttrs: rec {
        nativeBuildInputs = [ pkgs.installShellFiles ];
        buildInputs = oldAttrs.buildInputs or [ ] ++ [ pkgs.makeWrapper ];
        passthru = oldAttrs.passthru // {
          dependencies = [
            pkgs.coreutils
            pkgs.git
            pkgs.mdcat
            pkgs.tree-grepper
          ];
        };
        postInstall = ''
          exe=${oldAttrs.pname}

          wrapProgram $out/bin/$exe --prefix PATH : ${pkgs.lib.makeBinPath passthru.dependencies}

          installShellCompletion --cmd $exe  \
            --bash <($out/bin/$exe --bash-completion-script $out/bin/.$exe-wrapped) \
            --fish <($out/bin/$exe --fish-completion-script $out/bin/.$exe-wrapped) \
            --zsh  <($out/bin/$exe --zsh-completion-script $out/bin/.$exe-wrapped)
        '';
      });
    };
  };

in

rec {
  inherit (haskellPackages) anissue;
  shell = haskellPackages.shellFor {
    packages = _: [ anissue ];
    buildInputs = [
      haskellPackages.cabal-install
      haskellPackages.hlint
      haskellPackages.ormolu
      haskellPackages.pointfree
      pkgs.ghcid
      pkgs.haskell-language-server
    ] ++ anissue.passthru.dependencies;
    withHoogle = true;
    shellHook = ''
      HISTFILE=${pkgs.lib.escapeShellArg ./.}/.history; export HISTFILE
    '';
  };
}