:mnesia is listed both as a regular application and as an included application from deps

benonymus · July 13, 2023, 1:38pm

Hey,

I am trying to set up mnesia in my project.

I am using 2 deps.
Everything works fine locally, but when I build a release I get this error:

:mnesia is listed both as a regular application and as an included application from deps

The relevant lines:
I enjoy the interface of this.

github.com

beardedeagle/mnesiac/blob/c404e985194ea0ac360579d97cd371c6ae901011/mix.exs#L63


      
              ],
              name: "Mnesiac",
              source_url: "https://github.com/beardedeagle/mnesiac",
              deps: deps()
            ]
          end
          
          def application do
            [
              extra_applications: [:logger, :runtime_tools],
              included_applications: [:mnesia]
            ]
          end
          
          defp elixirc_paths(env) when env in [:dev, :test], do: ["lib", "test/support"]
          defp elixirc_paths(_env), do: ["lib"]
          
          defp deps do
            [
              {:libcluster, "~> 3.3", optional: true},
              {:credo, "~> 1.7", only: [:dev], runtime: false},

I enjoy the easy setup from this.

github.com

sheharyarn/memento/blob/137ff84c40b4a1c2e3496f160cecdb0428dd397a/mix.exs#L47


      
                main:       @name,
                canonical:  "https://hexdocs.pm/#{@app}",
                extras:     ["README.md"]
              ]
            ]
          end
          
          
          # BEAM Application
          def application do
            [extra_applications: [:logger, :mnesia]]
          end
          
          
          # Dependencies
          defp deps do
            [
              {:ex_doc,  ">= 0.0.0", only: :docs},
              {:inch_ex, ">= 0.0.0", only: :docs},
            ]
          end

Is there a way to resolve this error?

Thank you

jchrist · July 14, 2023, 10:13am

Do you also list mnesia as a dependency in your mix.exs itself or
is it only coming from these dependencies?

benonymus · July 14, 2023, 10:35am

Hey, I am not listing mnesia myself. It is coming from the dependencies.

jchrist · July 15, 2023, 11:40am

I think Adding deps to included_applications raises on release · Issue #9683 · elixir-lang/elixir · GitHub explains the same issue as you: like José replied, can you try setting either mnesiac: :load or memento: :load in your release configuration?

I would try: setting memento: :load and then starting Mnesia manually.
If I read memento’s code 1 properly, it just starts Mnesia under the
hood, so only loading it will probably cause less troubles.

benonymus · July 17, 2023, 6:52am

Hey,
Thanks for the reply!

I figured that there is one more dep that does the same as memento with listing mnesia.
I tried to load them as you said but didn’t seem to help.
I ended up removing everything other than mnesiac.