       false
     else
       exists = Artifact.exists?(pkg, toolchain)
-      |> IO.inspect
-
       checksum = match_checksum?(pkg, toolchain)
-      |> IO.inspect
 
       !(exists and checksum)
     end
   end
 
-  defp match_env?(pkg, toolchain) do
+  defp match_env?(pkg, _toolchain) do
     name =
       case pkg.type do
         :toolchain -> "NERVES_TOOLCHAIN"

      |> File.read
    case artifact_checksum do
      {:ok, checksum} ->
        checksum != Package.checksum(pkg)
      _ ->
        true
    end
  end


      end
    name = name <> "_ARTIFACT"
    dir = System.get_env(name)

    dir != nil and
    File.dir?(dir)
  end
