Mix Can't continue due to errors on dependencies error

[axelson]

** (Mix.Error) Can't continue due to errors on dependencies

A little more info at: https://github.com/elixir-lsp/elixir-ls/pull/110/files/b82d658bd86be7ed1c649601cd9bedd7e7c83764..225c5ee9ffcabb9fde0143cd7695b8b411ddad68#r377047068

This needs concrete reproduction steps.

[omar8792]

When i start vs code i get this error too:

an exception was raised:
    ** (Mix.Error) Can't continue due to errors on dependencies
        (mix) lib/mix.ex:389: Mix.raise/1
        (mix) lib/mix/tasks/deps.loadpaths.ex:28: Mix.Tasks.Deps.Loadpaths.run/1
        (mix) lib/mix/task.ex:331: Mix.Task.run_task/3
        (mix) lib/mix/tasks/loadpaths.ex:35: Mix.Tasks.Loadpaths.run/1
        (mix) lib/mix/task.ex:331: Mix.Task.run_task/3
        (mix) lib/mix/tasks/compile.ex:90: Mix.Tasks.Compile.run/1
        (mix) lib/mix/task.ex:331: Mix.Task.run_task/3
        (language_server) lib/language_server/build.ex:164: ElixirLS.LanguageServer.Build.compile/0ElixirLS

elixir: Erlang/OTP 22 [erts-10.5.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]

Elixir 1.9.1 (compiled with Erlang/OTP 22)

erlang: Erlang/OTP 22 [erts-10.5.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]

Eshell V10.5.1 (abort with ^G)

running on docker container with ububtu 19.10

here is my mix.ex

defmodule Crash.Mixfile do
  use Mix.Project

  def project do
    [
      app: :crash,
      version: get_version(),
      elixir: "~> 1.4",
      elixirc_paths: elixirc_paths(Mix.env()),
      elixirc_options: elixirc_options(Mix.env()),
      compilers: [:phoenix, :gettext] ++ Mix.compilers(),
      start_permanent: Mix.env() == :production,
      test_coverage: [tool: ExCoveralls],
      preferred_cli_env: [coveralls: :test, e2e: :test],
      aliases: aliases(),
      deps: deps(),
      dialyzer: [plt_add_apps: [:mix, :ex_unit], plt_add_deps: :transitive, ignore_warnings: ".dialyzerignore"]
    ]
  end

  # Configuration for the OTP application.
  #
  # Type `mix help compile.app` for more information.
  def application do
    [
      mod: {Crash.Application, %{env: Mix.env()}},
      extra_applications: [:logger, :runtime_tools]
    ]
  end

  # Specifies which paths to compile per environment.
  defp elixirc_paths(env) when env in [:dev, :test], do: ["lib", "test/support", "credo"]
  defp elixirc_paths(:qa), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  # Elixir compiler options
  defp elixirc_options(env) when env in [:dev, :test], do: [long_compilation_threshold: 60]
  defp elixirc_options(_), do: []

  # Specifies your project dependencies.
  #
  # Type `mix help deps` for examples and options.
  defp deps do
    [
      {:absinthe, "~> 1.4"},
      {:absinthe_ecto, "~> 0.1"},
      {:absinthe_plug, "~> 1.4"},
      {:absinthe_relay, "~> 1.4"},
      {:amqpx, "~> 5.2-pre"},
      {:amqp_client, "~> 3.7.20-rc", override: true},
      {:bamboo, "~> 1.1"},
      {:bamboo_smtp, "~> 2.0"},
      {:basic_auth, "~> 2.2.2"},
      {:briefly, "~> 0.3"},
      {:cachex, "~> 3.0"},
      {:cowboy, "~> 2.7.0"},
      {:csv, "~> 2.1"},
      {:csv_schema, "~> 0.2.2"},
      {:distillery, "~> 2.1"},
      {:ecto_enum, "~> 1.2"},
      {:ecto_sql, "~> 3.0"},
      {:ex_aws, "~> 2.0"},
      {:ex_aws_s3, "~> 2.0"},
      {:exq, "~> 0.9"},
      {:fetcher, "~> 0.1"},
      {:fun_with_flags, "~> 1.0"},
      {:fun_with_flags_ui, "~> 0.4"},
      {:gettext, "~> 0.11"},
      {:guardian, "~> 2.0"},
      {:http_mock_pal, "~> 1.0"},
      {:httpoison, "~> 1.1"},
      {:jason, "~> 1.1"},
      {:lager, "~> 3.8", override: true},
      {:mariaex, "~> 0.8"},
      {:myxql, "~> 0.3.1"},
      {:mime, "~> 1.1"},
      {:mock, "~> 0.3"},
      {:noether, "~> 0.2.1"},
      {:parallel_task, "~> 0.1.0"},
      {:phoenix, "~> 1.4.1"},
      {:phoenix_ecto, "~> 4.0"},
      {:phoenix_html, "~> 2.6"},
      {:phoenix_pubsub, "~> 1.0"},
      {:phoenix_pubsub_redis, "~> 2.1"},
      {:plug_cowboy, "~> 2.0"},
      {:posexional, "~> 0.4"},
      {:postgrex, ">= 0.0.0"},
      {:prima_logger_logstash_backend, "~> 1.0"},
      {:quantum, "~> 2.3"},
      {:rabbit_common, "~> 3.7.20-rc", override: true},
      {:redix, "~> 0.8"},
      {:statix, github: "primait/statix", branch: "feature/switch_from_config"},
      {:sweet_xml, "~> 0.6"},
      {:timex, "~> 3.1"},
      {:typed_struct, "~> 0.1.4", runtime: false},
      {:elixir_uuid, "~> 1.2"}
    ] ++ deps_dev()
  end

  defp deps_dev(),
    do: [
      {:credo, "~> 1.0", only: [:dev, :test]},
      {:ex_prima_toolbox, ">= 0.0.0", only: :dev},
      {:excoveralls, "~> 0.7", only: :test},
      {:exq_ui, "~> 0.10"},
      {:dialyxir, "1.0.0-rc.7", only: [:dev, :test], runtime: false},
      {:faker, "~> 0.11", only: [:dev, :test, :qa]},
      {:hound, "~> 1.0", only: [:dev, :test]},
      {:phoenix_live_reload, "~> 1.2", only: :dev}
    ]

  # Aliases are shortcuts or tasks specific to the current project.
  # For example, to create, migrate and run the seeds file at once:
  #
  #     $ mix ecto.setup
  #
  # See the documentation for `Mix` for more info on aliases.
  defp aliases do
    [
      "ecto.seeds": [
        "run priv/repo/prima_msa_seeds.exs",
        "run priv/repo/seeds.exs",
        "run priv/fun_with_flags.exs"
      ],
      "ecto.setup": ["ecto.create", "ecto.migrate --log-sql", "ecto.seeds"],
      "ecto.reset": ["ecto.drop", "ecto.setup"],
      "ecto.init": ["ecto.drop", "ecto.create --quiet", "ecto.migrate"],
      test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"],
      serve: "phx.server",
      s: "phx.server",
      check: ["format.check", "credo -a", "dialyzer"],
      "fe.check": ["elm.check_format", "elm.analyze", "npm.lint"],
      "format.all": ["format mix.exs 'lib/**/*.{ex,exs}' 'test/**/*.{ex,exs}' 'config/*.{ex,exs}'"],
      "format.check": ["format --check-formatted mix.exs 'lib/**/*.{ex,exs}' 'test/**/*.{ex,exs}' 'config/*.{ex, exs}'"],
      c: "compile",
      ct: "compile --all-warnings --warnings-as-errors --ignore-module-conflict --debug-info",
      "deps.clean.unused": "deps.clean --unlock --unused"
    ]
  end

  defp get_version() do
    case System.get_env("DRONE_TAG") do
      "" -> default_version()
      nil -> default_version()
      drone_tag -> drone_tag
    end
  end

  defp default_version(), do: "0.0.0-#{DateTime.to_unix(DateTime.utc_now())}"
end

[axelson]

@omar8792 if you could reproduce this on a smaller project (or one an openly published project) that would be very helpful. Also does this error persist doing a rm -rf .elixir_ls from your project directory?

[sosodev]

FWIW updating my project's dependencies caused this issue and removing the .elixir_ls directory resolved it

[dogweather]

@sosodev 's solution works for me: I've been having this problem on and off.

[Sgoettschkes]

@omar8792 if you could reproduce this on a smaller project (or one an openly published project) that would be very helpful. Also does this error persist doing a rm -rf .elixir_ls from your project directory?

I tried to create a setup with which this reproducible happens. On macOS with Visual Code Insider and ElixirLS 0.6.2 installed and elixirLS.fetchDeps disabled:

1. Create new project on the command line, using mix new test_ls
2. Open the project in Visual Code Insider, open mix.ex and open the ElixirLS Output Window
3. Add {:phoenix, "~> 1.5.0"} to the deps function to add the dependency.
4. First result: ** (Mix.Error) Can't continue due to errors on dependencies error in ElixirLS Output
5. Run mix deps.get on console
6. ElixirLS compiles and errors are resolved
7. Change version of phoenix to "~> 1.4.0"
8. Second Result: ** (Mix.Error) Can't continue due to errors on dependencies error in ElixirLS Output
9. Run mix deps.get on console
10. ElixirLS compiles but fails

== Compilation error in file lib/phoenix/endpoint/cowboy_adapter.ex ==
** (CompileError) lib/phoenix/endpoint/cowboy_adapter.ex:78: cannot import Phoenix.Endpoint.Cowboy2Adapter.info/3 because it is undefined or private
    (elixir 1.11.2) src/elixir_import.erl:64: :elixir_import.calculate/6
    (elixir 1.11.2) src/elixir_import.erl:18: :elixir_import.import/4

11. mix deps.compile on the console works fine, as expected
12. ElixirLS still reports ** (Mix.Error) Can't continue due to errors on dependencies

I hope this helps solving this issue. It seems that adding new dependencies does not cause problems, but changing or removing does.

[thojanssens]

I have this error on my mix.exs file. Tried to remove deps and refetch dependencies, also tried to remove .elixir_ls, but the problem persists.

[numkem]

I have this error on my mix.exs file. Tried to remove deps and refetch dependencies, also tried to remove .elixir_ls, but the problem persists.

I've pulled from latest master and deleted both _build and .elixir-ls folders and that seems to have worked for me.

[mtrudel]

I've had success with running MIX_ENV=test mix deps.get. I think elixir-ls runs in a test env, so maybe that's part of the reason.

I've also had to do this at all levels of an umbrella project (ie: run MIX_ENV=test mix deps.get in the root, and any sub projects whose deps have recently changed.

[lukaszsamson]

Thanks @Sgoettschkes for reliable repro steps. I was finally able to pinpoint the issue. Turns out that persistent mix state was not properly cleared and it broke dependency loading. After more than 4 years I have a fix for what was originally reported in https://github.com/JakeBecker/elixir-ls/issues/71