Hi, I experience the same problem, the format command from VSCode does not trigger mix format. When running mix format from the CLI this goes well.
My Elixir-ls output log looks fine:
Started ElixirLS v0.8.1
Elixir version: "1.12.2 (compiled with Erlang/OTP 24)"
Erlang version: "24"
ElixirLS compiled with Elixir 1.10.4 and erlang 22
MIX_ENV: test
MIX_TARGET:
Compiling 5 files (.ex)
Generated islands_engine app
[Info - 8:14:41 AM] Compile took 1197 milliseconds
[Info - 8:14:41 AM] [ElixirLS WorkspaceSymbols] Indexing...
MIX_ENV: test
MIX_TARGET:
[Info - 8:14:41 AM] [ElixirLS WorkspaceSymbols] Module discovery complete
[Info - 8:14:41 AM] [ElixirLS WorkspaceSymbols] 22 callbacks added to index
[Info - 8:14:41 AM] [ElixirLS WorkspaceSymbols] 171 modules added to index
[Info - 8:14:42 AM] Compile took 716 milliseconds
[Info - 8:14:42 AM] [ElixirLS Dialyzer] Checking for stale beam files
[Info - 8:14:42 AM] [ElixirLS Dialyzer] Found 11 changed files in 17 milliseconds
[Info - 8:14:42 AM] [ElixirLS WorkspaceSymbols] 281 types added to index
[Info - 8:14:42 AM] [ElixirLS Dialyzer] Analyzing 11 modules: [Collectable, Enumerable, IEx.Info, Inspect, IslandsEngine, IslandsEngine.Application, IslandsEngine.Coordinate, IslandsEngine.Guesses, IslandsEngine.Island, List.Chars, String.Chars]
[Info - 8:14:42 AM] [ElixirLS Dialyzer] Analysis finished in 422 milliseconds
[Info - 8:14:42 AM] Dialyzer analysis is up to date
[Info - 8:14:42 AM] [ElixirLS Dialyzer] Writing manifest...
[Info - 8:14:43 AM] [ElixirLS Dialyzer] Done writing manifest in 597 milliseconds.
[Info - 8:14:44 AM] [ElixirLS WorkspaceSymbols] 3964 functions added to index
What else should I check into?
