improvement: remove warnings about Phx.New in some new projects

closes #209

lib/igniter/phoenix/single.ex

@@ -1,71 +1,73 @@
-defmodule Igniter.Phoenix.Single do
-  @moduledoc false
-  # Wrap Phx.New.Single
-  # https://github.com/phoenixframework/phoenix/blob/7586cbee9e37afbe0b3cdbd560b9e6aa60d32bf6/installer/lib/phx_new/single.ex
+if Code.ensure_loaded?(Phx.New.Project) do
+  defmodule Igniter.Phoenix.Single do
+    @moduledoc false
+    # Wrap Phx.New.Single
+    # https://github.com/phoenixframework/phoenix/blob/7586cbee9e37afbe0b3cdbd560b9e6aa60d32bf6/installer/lib/phx_new/single.ex
 
-  alias Igniter.Phoenix.Generator
-  alias Phx.New.Project
+    alias Igniter.Phoenix.Generator
+    alias Phx.New.Project
 
-  @mod Phx.New.Single
+    @mod Phx.New.Single
 
-  def generate(igniter, project) do
-    generators = [
-      {true, &gen_new/2},
-      {Project.ecto?(project), &gen_ecto/2},
-      {Project.html?(project), &gen_html/2},
-      {Project.mailer?(project), &gen_mailer/2},
-      {Project.gettext?(project), &gen_gettext/2},
-      {true, &gen_assets/2}
-    ]
+    def generate(igniter, project) do
+      generators = [
+        {true, &gen_new/2},
+        {Project.ecto?(project), &gen_ecto/2},
+        {Project.html?(project), &gen_html/2},
+        {Project.mailer?(project), &gen_mailer/2},
+        {Project.gettext?(project), &gen_gettext/2},
+        {true, &gen_assets/2}
+      ]
 
-    Enum.reduce(generators, igniter, fn
-      {true, gen_fun}, acc -> gen_fun.(acc, project)
-      _, acc -> acc
-    end)
-  end
+      Enum.reduce(generators, igniter, fn
+        {true, gen_fun}, acc -> gen_fun.(acc, project)
+        _, acc -> acc
+      end)
+    end
 
-  def gen_new(igniter, project) do
-    Generator.copy_from(igniter, project, @mod, :new)
-  end
+    def gen_new(igniter, project) do
+      Generator.copy_from(igniter, project, @mod, :new)
+    end
 
-  def gen_ecto(igniter, project) do
-    igniter
-    |> Generator.copy_from(project, @mod, :ecto)
-    |> Generator.gen_ecto_config(project)
-  end
+    def gen_ecto(igniter, project) do
+      igniter
+      |> Generator.copy_from(project, @mod, :ecto)
+      |> Generator.gen_ecto_config(project)
+    end
 
-  def gen_html(igniter, project) do
-    Generator.copy_from(igniter, project, @mod, :html)
-  end
+    def gen_html(igniter, project) do
+      Generator.copy_from(igniter, project, @mod, :html)
+    end
 
-  def gen_mailer(igniter, project) do
-    Generator.copy_from(igniter, project, @mod, :mailer)
-  end
+    def gen_mailer(igniter, project) do
+      Generator.copy_from(igniter, project, @mod, :mailer)
+    end
 
-  def gen_gettext(igniter, project) do
-    Generator.copy_from(igniter, project, @mod, :gettext)
-  end
+    def gen_gettext(igniter, project) do
+      Generator.copy_from(igniter, project, @mod, :gettext)
+    end
+
+    def gen_assets(igniter, project) do
+      javascript? = Project.javascript?(project)
+      css? = Project.css?(project)
+      html? = Project.html?(project)
 
-  def gen_assets(igniter, project) do
-    javascript? = Project.javascript?(project)
-    css? = Project.css?(project)
-    html? = Project.html?(project)
+      igniter = Generator.copy_from(igniter, project, @mod, :static)
 
-    igniter = Generator.copy_from(igniter, project, @mod, :static)
+      igniter =
+        if html? or javascript? do
+          command = if javascript?, do: :js, else: :no_js
+          Generator.copy_from(igniter, project, @mod, command)
+        else
+          igniter
+        end
 
-    igniter =
-      if html? or javascript? do
-        command = if javascript?, do: :js, else: :no_js
+      if html? or css? do
+        command = if css?, do: :css, else: :no_css
         Generator.copy_from(igniter, project, @mod, command)
       else
         igniter
       end
-
-    if html? or css? do
-      command = if css?, do: :css, else: :no_css
-      Generator.copy_from(igniter, project, @mod, command)
-    else
-      igniter
     end
   end
 end

lib/mix/tasks/igniter.install_phoenix.ex → lib/mix/tasks/igniter.phx.install.ex

@@ -129,10 +129,11 @@ defmodule Mix.Tasks.Igniter.Phx.Install do
 
   defp generate(igniter, base_path, {phx_generator, igniter_generator}, opts) do
     project =
-      base_path
-      |> Phx.New.Project.new(opts)
+      apply(Phx.New.Project, :new, [base_path, opts])
       |> phx_generator.prepare_project()
-      |> Phx.New.Generator.put_binding()
+
+    project =
+      apply(Phx.New.Generator, :put_binding, [project])
       |> validate_project()
 
     igniter