Indexing getting stuck

[JonasGruenwald]

I quite frequently run into a situation where lexical gets stuck indexing indefinitely, and sometimes it appears to spin up several indexing tasks which all end up stuck / don't leave the vscode notification center, this is a bit distracting:

Unfortunately reloading the editor does not help at all, once this starts happening, lexical always shows an indexing notification that never goes away when it starts, and the only thing that helps is deleting the indexes directory under .lexical and then restarting the editor.

After that, the indexing then completes immediately in around a second and everything works normally again.

It just happened to me again and I noticed the last line in the .lexical/project.log is this:

2025-02-02T00:05:02.596800+01:00 error: Task #PID<0.475.0> started from LXical.RemoteControl.Search.Store terminating, ** (FunctionClauseError) no function clause matching in :elixir_aliases.do_concat/2, (elixir 1.17.3) src/elixir_aliases.erl:183: :elixir_aliases.do_concat([{:unquote, [_scope_id: 144201440653480029, closing: [line: 72, column: 40], line: 72, column: 15], [{{:., [_scope_id: 144201440653480031, line: 72, column: 33], [{:CALLER, [_scope_id: 144201440653480032, line: 72, column: 23], nil}, :module]}, [_scope_id: 144201440653480030, no_parens: true, line: 72, column: 34], []}]}, :Consumer], "Elixir"), (elixir 1.17.3) src/elixir_aliases.erl:171: :elixir_aliases.concat/1, (lx_remote_control 0.7.2) lib/lexical/remote_control/analyzer/aliases.ex:14: anonymous fn/1 in LXical.RemoteControl.Analyzer.Aliases.at/2, (elixir 1.17.3) lib/map.ex:257: Map.do_map/2, (elixir 1.17.3) lib/map.ex:257: Map.do_map/2, (elixir 1.17.3) lib/map.ex:251: Map.new_from_map/2, (lx_remote_control 0.7.2) lib/lexical/remote_control/analyzer.ex:118: LXical.RemoteControl.Analyzer.expand_alias/3, (lx_remote_control 0.7.2) lib/lexical/remote_control/search/indexer/extractors/module.ex:258: LXical.RemoteControl.Search.Indexer.Extractors.Module.module/2, Function: &:erlang.apply/2, Args: [#Function<3.97721833/1 in LXical.RemoteControl.Search.Indexer.async_chunks/3>, [["/Users/jonas/Projects/g2-mono/backend/deps/patch/lib/patch/mock/code.ex", "/Users/jonas/Projects/g2-mono/backend/deps/mneme/test_integration/receive_test.exs", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.channel/channel_case.ex", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.auth/registration_controller_test.exs", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.context/access_no_schema.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.json/changeset_json.ex", "/Users/jonas/Projects/g2-mono/backend/deps/telegex/lib/telegex/polling/gen_handler.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/routes.ex", "/Users/jonas/Projects/g2-mono/backend/deps/postgrex/lib/postgrex/default_types.ex", "/Users/jonas/Projects/g2-mono/backend/deps/mneme/benchmarks/diff.exs", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.html/controller_test.exs", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/reset_password_live.ex", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.auth/settings_controller.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/registration_live.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/auth_test.exs", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/test_cases.exs", "/Users/jonas/Projects/g2-mono/backend/deps/oban_web/lib/oban/web/resolver.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/session_controller.ex", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.json/json.ex", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.context/test_cases.exs", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/conn_case.exs", "/Users/jonas/Projects/g2-mono/backend/deps/mneme/test/test_helper.exs", "/Users/jonas/Projects/g2-mono/backend/deps/phoenix/priv/templates/phx.gen.context/context.ex", "/Users/jonas/Projects/g2-mono/backend/deps/bandit/lib/bandit.ex", "/Users/jonas/Projects/g2-mono/backend/_build/dev/lib/phoenix/priv/templates/phx.gen.auth/confirmation_controller.ex"]]]

In the lexical.log there is this:

 [error] Child :undefined of Supervisor LXical.Server.TaskQueue.State.TaskSupervisor terminated
** (exit) :canceled
Pid: #PID<0.1553.0>
Start Call: Task.Supervised.start_link/?
Restart: :temporary
Shutdown: 5000
Type: :worker

Is there any way to avoid this?