How to move an existing phoenix app under an umbrella app

phoenix_to_umbrella

How to convert existing phoenix app to an umbrella app.
https://elixir-lang.slack.com/archives/phoenix/p1472921051000134


chrismccord [10:14 PM]  
@alanpeabody yes, it's straightforward

[10:14]  
1) mix new my_umbrella --umbrella

[10:14]  
2) cd my_umbrella/apps

[10:15]  
3) mv ~/path/to/phoenix_app ./

[10:16]  
4) Update the paths in your phoenix project's mix.exs to match:

david.antaramian [10:16 PM]  
He described his problem more in #general which is that he wants to keep his existing git history. Though, that should really just involve inverting what you suggested

chrismccord [10:16 PM]  
```
  def project do
    [app: :my_app,
     version: "0.0.1",
     build_path: "../../_build",
     config_path: "../../config/config.exs",
     deps_path: "../../deps",
     lockfile: "../../mix.lock",
     elixir: "~> 1.2",
     elixirc_paths: elixirc_paths(Mix.env),
     compilers: [:phoenix, :gettext] ++ Mix.compilers,
     build_embedded: Mix.env == :prod,
     start_permanent: Mix.env == :prod,
     aliases: aliases,
     deps: deps]
  end
```
Not: distillery, coveralls, credo should be in root mix.exs

5) rel to root:
if distillery is not updated, just move it
if distillery updated, run mix release.init and does rel file should be updated

6) Move coverall.json to root
```apps/my_app/coverall.json  .```

7) Move .credo to root
mv apps/my_app/config/.credo.exs config/
Update to umbrella:
```
%{
  configs: [
    %{
      color: true,
      name: "default",
      files: %{
        included: ["apps/*/lib/*"],
        excluded: ["apps/*/lib/tasks/tasks.ex"]
      },
      checks: [
        {Credo.Check.Design.TagTODO, exit_status: 0},
        {Credo.Check.Readability.MaxLineLength, priority: :low, max_length: 120},
        {Credo.Check.Readability.Specs, false},
        {Credo.Check.Design.AliasUsage, if_nested_deeper_than: 2}
      ]
    }
  ]
}
```


[10:16]  
8) shipit

[10:17]  
9) if using brunch/node, update package.json paths that reference phoenix

[10:18]  
@david.antaramian @alanpeabody ah yes, you should be able to do it similarly but within the existing repo