update to use task function for deps.update

Author: mobileoverlord

lib/nerves_bootstrap.ex

@@ -38,14 +38,19 @@ defmodule Nerves.Bootstrap do
     end
   end
 
+  def deps_update(args) do
+    Mix.Tasks.Deps.Update.run(args)
+    Mix.Tasks.Nerves.Deps.Get.run([])
+  end
+
   @doc """
   Add the required Nerves bootstrap aliases to the existing ones
   """
   def add_aliases(aliases) do
     aliases
     |> append("deps.get", "nerves.deps.get")
-    |> append("deps.update", "nerves.deps.get")
     |> prepend("deps.loadpaths", "nerves.loadpaths")
+    |> replace("deps.update", &Nerves.Bootstrap.deps_update/1)
   end
 
   defp append(aliases, a, na) do
@@ -58,6 +63,11 @@ defmodule Nerves.Bootstrap do
     Keyword.update(aliases, key, [na, a], &([na | drop(&1, na)]))
   end
 
+  defp replace(aliases, a, fun) do
+    key = String.to_atom(a)
+    Keyword.update(aliases, key, [fun], &(drop(&1, fun) ++ [fun]))
+  end
+
   defp drop(aliases, a) do
     Enum.reject(aliases, &(&1 === a))
   end

test/nerves_bootstrap_test.exs

@@ -4,7 +4,7 @@ defmodule Nerves.BootstrapTest do
   test "aliases are injected properly" do
     deps_loadpaths = ["nerves.loadpaths", "deps.loadpaths"]
     deps_get = ["deps.get", "nerves.deps.get"]
-    deps_update = ["deps.update", "nerves.deps.get"]
+    deps_update = [&Nerves.Bootstrap.deps_update/1]
 
     aliases = Nerves.Bootstrap.add_aliases([])
     assert Keyword.get(aliases, :"deps.loadpaths") == deps_loadpaths
@@ -16,22 +16,21 @@ defmodule Nerves.BootstrapTest do
     custom_aliases = [
       "deps.loadpaths": ["custom", "deps.loadpaths"],
       "deps.get": ["deps.get", "custom"],
-      "deps.update": ["deps.update", "custom"],
+      "deps.update": ["custom"],
       "custom": ["custom"]
     ]
     aliases = Nerves.Bootstrap.add_aliases(custom_aliases)
 
     assert Keyword.get(aliases, :"deps.loadpaths") == ["nerves.loadpaths", "custom", "deps.loadpaths"]
     assert Keyword.get(aliases, :"deps.get") == ["deps.get", "custom", "nerves.deps.get"]
-    assert Keyword.get(aliases, :"deps.update") == ["deps.update", "custom", "nerves.deps.get"]
+    assert Keyword.get(aliases, :"deps.update") == ["custom", &Nerves.Bootstrap.deps_update/1]
     assert Keyword.get(aliases, :"custom") == ["custom"]
   end
 
   test "aliases are dropped if they already exist" do
     deps_loadpaths = ["nerves.loadpaths", "deps.loadpaths"]
     deps_get = ["deps.get", "nerves.deps.get"]
-    deps_update = ["deps.update", "nerves.deps.get"]
- 
+    deps_update = [&Nerves.Bootstrap.deps_update/1]
     nerves_aliases = [
       "deps.loadpaths": deps_loadpaths
     ]