default.nix

@@ -3,7 +3,6 @@ let
   pkgs =  import sources.nixpkgs {};
   ghcVersion = "ghc865";
   haskellPackages = pkgs.haskell.packages."${ghcVersion}";
-  haskellClosure = haskellPackages.callPackage ./haskell-playground.nix {};
   hlib = pkgs.haskell.lib;
 in haskellPackages.developPackage {
   name = "haskell-playground";

haskell-playground.nix

@@ -1,13 +0,0 @@
-{ mkDerivation, attoparsec, base, extra, lib, megaparsec, relude }:
-mkDerivation {
-  pname = "haskell-playground";
-  version = "0.1.0.0";
-  src = ./.;
-  isLibrary = false;
-  isExecutable = true;
-  executableHaskellDepends = [
-    attoparsec base extra megaparsec relude
-  ];
-  license = "unknown";
-  hydraPlatforms = lib.platforms.none;
-}