diff --git a/lib/mix_tasks.ex b/lib/mix_tasks.ex
index 840a17e..45ed17a 100644
--- a/lib/mix_tasks.ex
+++ b/lib/mix_tasks.ex
@@ -3,14 +3,18 @@ defmodule Mix.Tasks.Aoc do
   import Aoc2023.Common
 
   defp module(1), do: Aoc2023.Day1
+  defp module(2), do: Aoc2023.Day2
   # [MODULE INSERTION POINT]  
 
   defp base_dir(), do: System.get_env("AOC_BASE")
 
   defp tests(day) do
     case File.ls(tests_dir(day)) do
-      {:ok, paths} -> paths |> Enum.filter(&(not String.contains?(&1, ".")))
-      {:error, e} -> dbg(e)
+      {:ok, paths} ->
+        paths |> Enum.filter(&(not String.contains?(&1, ".")))
+
+      {:error, e} ->
+        dbg(e)
         []
     end
   end
@@ -59,17 +63,17 @@ defmodule Mix.Tasks.Aoc do
   defp run(day, ["new"]) do
     create_file("#{base_dir()}/lib/day#{day}.ex", """
     defmodule Aoc2023.Day#{day} do
-    	use Aoc2023
+      use Aoc2023
 
-    	def parse(input) do
-    		input
-    	end
+      def parse(input) do
+        input
+      end
 
-    	def part1(input) do
-    	end
+      def part1(_input) do
+      end
 
-    	def part2(input) do
-    	end
+      def part2(_input) do
+      end
     end
     """)
 
@@ -110,6 +114,8 @@ defmodule Mix.Tasks.Aoc do
         if stringify(p1) != p1e do
           IO.puts("Failed at #{test}.1: expected #{p1e}, got:")
           dbg(p1)
+        else
+          IO.puts("Test #{test}.1 succeeded")
         end
       else
         IO.puts("Test #{test}.1")
@@ -122,6 +128,8 @@ defmodule Mix.Tasks.Aoc do
         if stringify(p2) != p2e do
           IO.puts("Failed at #{test}.2: expected #{p2e}, got:")
           dbg(p2)
+        else
+          IO.puts("Test #{test}.2 succeeded")
         end
       else
         IO.puts("Test #{test}.2")
diff --git a/shell.nix b/shell.nix
index 7419c10..42ba9d3 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,10 +5,11 @@
   elixir,
   elixir-ls,
   inotify-tools,
+  entr,
 }:
 mkShell {
   packages =
-    [elixir elixir-ls]
+    [elixir elixir-ls entr]
     ++ lib.lists.optional (pkgs.system == "x86_64-linux") inotify-tools
     ++ lib.lists.optionals (pkgs.system == "aarch64-darwin") (with pkgs.darwin.apple_sdk.frameworks; [
       CoreFoundation