Exrm failed to create release

Question

I am trying to use exrm in my elixir project, but this shows a very cryptic behavior. This is my mix.exs:

defmodule MyApp.Mixfile do use Mix.Project def project do [app: :my_app, version: "0.0.1", elixir: ">= 1.0.5", build_embedded: Mix.env == :prod, start_permanent: Mix.env == :prod, deps: deps] end def application do [ mod: { MyApp, [] }, applications: [:logger, :cowboy] ] end defp deps do [ {:cowboy, "1.0.2"}, {:exrm, "0.18.1"} ] end end 

When you first start mix release everything works fine. I run the release, and then I just make fun of the version to "0.0.2" and create a second version. This also works, and I can go to "0.0.2". The third time I get the following error:

 ... ==> Generating release... ==> Generated .appup for fis_api 0.0.2 -> 0.0.3 ==> Failed to build release. Please fix any errors and try again. 

There is a very similar open problem on the exrm github page, but in my case there is no error regarding the beam file.

Answer 1

This happened because I started the release in the same directory in which they were created. This is not currently mentioned in the docs, but you really have to move the releases to another place and run them there, as in the exrm project example.