ExpertLSP.expert installation on VS code doesn't work, crashes.

[grant-zukowski-xumo]

VS code extension ID: ExpertLSP.expert

Still doesn't work. I'm getting this error. Have you tried to install it?

2026-01-21 10:41:34.469 [info] [Error - 10:41:34 AM] ** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-9e913f6) lib/expert/state.ex:219: XPExpert.State.apply/2
    (xp_expert 0.1.0-9e913f6) lib/expert.ex:277: XPExpert.apply_to_state/2
    (xp_expert 0.1.0-9e913f6) lib/expert.ex:207: XPExpert.handle_notification/2
    (xp_gen_lsp 0.11.3) lib/gen_lsp.ex:600: anonymous fn/2 in XPGenLSP.handle_notification_sync/3
    (xp_telemetry 1.3.0) /home/runner/work/expert/expert/apps/expert/deps/telemetry/src/telemetry.erl:324: :xp_telemetry.span/3
    (xp_gen_lsp 0.11.3) lib/gen_lsp.ex:599: XPGenLSP.handle_notification_sync/3
    (xp_gen_lsp 0.11.3) lib/gen_lsp.ex:502: XPGenLSP.loop/3

I don't see any warning when I try to us a function that is not available. No auto formatting.

This is an umbrella app, it looks like it can't start the sub apps because it doesn't know what elixir installation to use.

I've got Elixir installed with Nix, but it looks like it is trying to use my previous homebrew installation:

Failed to start project node for <project>: {:shutdown,
 {:failed_to_start_child, {XPExpert.Project.Node, "<project>"},
  {:error, :normal,

.... /opt/homebrew/opt/asdf/libexec/bin/asdf: No such file or directory\n

[mhanberg]

Just to rule this out, can you trying opening vscode from the directory of your project with code .?

Are you using a dev shell or have elixir installed globally with nix?

Also, it's weird that it says the asdf script can't be found.

[sescobb27]

its not the same exact error, but also getting errors starting it in cursor, i'm using elixir 1.19.5-otp-28 and erlang 28.3, with .tool-versions, i'm opening the project with cursor . and i also have elixir installed globally by asdf