lbolla / emacs-flycheck-elixir Goto Github PK

Try installing a more recent version of elixir, and please open a bug report if the issue persists in the latest release.  Thanks!
Suspicious state from syntax checker elixir: Flycheck checker elixir returned non-zero exit code 1, but its output contained no errors: 
== Compilation error on file flycheck_config.exs ==
** (exit) exited in: GenServer.call(Mix.State, {:get, {Map, :get, [:env, :dev]}}, 5000)
    ** (EXIT) no process
    (elixir) lib/gen_server.ex:596: GenServer.call/3
    flycheck_config.exs:27: (file)
    (elixir) lib/kernel/parallel_compiler.ex:115: anonymous fn/4 in Kernel.ParallelCompiler.spawn_compilers/1


Try installing a more recent version of elixir, and please open a bug report if the issue persists in the latest release.  Thanks!
user-error: Minibuffer window is not active

I constantly see this while editing Elixir projects in Emacs. How to get rid of this error? Thanks.

Currently this checker only reports errors when the file is saved, which can be pretty confusing if you aren't used to that (most Flycheck checkers I've used work on unsaved files).

I've heard that elixirc doesn't support compiling from stdin. However, is it possible to check files using Flycheck's temporary files (e.g. source or source-inplace)? I tried changing this package's :command to (... source-inplace) and it seemed to work on a single file.

Running the checker on test files fails with a message like:

== Compilation error on file bucket_test.exs ==
** (RuntimeError) cannot use ExUnit.Case without starting the ExUnit application, please call ExUnit.start() or explicitly start the :ex_unit app
expanding macro: ExUnit.Case.using/1
bucket_test.exs:2: KVBucketTest (module)
(elixir) expanding macro: Kernel.use/2
bucket_test.exs:2: KVBucketTest (module)

Umbrella applications by default store their built dependencies at the umbrella root rather than per-project, which is making Flycheck emit "module X is not loaded and could not be found" for any external dependencies.
I'm not sure if it's feasible to read mix.exs inside elixirc-params but there's a build_path in there which would help.

Here's an umbrella app to illustrate:

.
├── apps
│   └── bar  # There's no _build in here.
│       ├── config
│       │   └── config.exs
│       ├── lib
│       │   └── bar.ex
│       ├── mix.exs
│       ├── README.md
│       └── test
│           ├── bar_test.exs
│           └── test_helper.exs
├── _build  # Here it is!
│   └── dev
│       ├── consolidated
│       │   ├── Elixir.Collectable.beam
│       │   ├── Elixir.Enumerable.beam
│       │   ├── Elixir.IEx.Info.beam
│       │   ├── Elixir.Inspect.beam
│       │   ├── Elixir.List.Chars.beam
│       │   └── Elixir.String.Chars.beam
│       └── lib
│           └── bar
│               └── ebin
│                   ├── bar.app
│                   └── Elixir.Bar.beam
├── config
│   └── config.exs
├── mix.exs
└── README.md

Running on mix.exs fails with:

== Compilation error on file mix.exs ==
** (exit) exited in: GenServer.call(Mix.State, {:get, {Map, :get, [:env, :dev]}}, 5000)
** (EXIT) no process
(elixir) lib/gen_server.ex:564: GenServer.call/3
mix.exs:8: KV.Mixfile.project/0
Mix.Project.get_project_config/1
lib/mix/project.ex:60: Mix.Project.push/3
(stdlib) lists.erl:1262: :lists.foldl/3

See melpa/melpa#3709 (comment)

Hi,
I noticed this checker doesn't work properly for umbrella apps, as the project-path is set to the inner app and thus the deps are searched at a wrong place ($PROJECT_ROOT/apps/xxx/_deps instead of $PROJECT_ROOT/_deps).

I made my effort to fix this at https://github.com/Coffei/emacs-flycheck-elixir by checking if the mix found by locate-dominating-file is not in fact inside an umbrella app. Works great for my project.

Would you be interested in a PR for this?

https://emacs.stackexchange.com/a/48115