Fetching PATH from apple terminal pulls in malformed path

[nbernardes]

When I save an .ex file using Zed, the auto formatting isn't working and I get this log.

elixir = "1.19.0-otp-28"
erlang = "28.1"
expert = "2c2b7f4"

2025-10-19T22:18:48+01:00 INFO  [project.lsp_format] Formatting via LSP
2025-10-19T22:18:48+01:00 WARN  [project::lsp_store] Get code actions via expert failed: ** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-2c2b7f4) lib/expert/provider/handlers/code_action.ex:16: XPExpert.Provider.Handlers.CodeAction.handle/2
    (xp_expert 0.1.0-2c2b7f4) lib/expert.ex:94: XPExpert.handle_request/2
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
    (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

2025-10-19T22:18:48+01:00 ERROR [project::lsp_store] Formatting failed: failed to format via language server: ** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-2c2b7f4) lib/expert/provider/handlers/formatting.ex:16: XPExpert.Provider.Handlers.Formatting.handle/2
    (xp_expert 0.1.0-2c2b7f4) lib/expert.ex:94: XPExpert.handle_request/2
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
    (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

2025-10-19T22:18:48+01:00 ERROR [project::lsp_store] Get code actions via expert failed: ** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-2c2b7f4) lib/expert/provider/handlers/code_action.ex:16: XPExpert.Provider.Handlers.CodeAction.handle/2
    (xp_expert 0.1.0-2c2b7f4) lib/expert.ex:94: XPExpert.handle_request/2
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
    (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

2025-10-19T22:18:48+01:00 ERROR [editor::editor] failed to format via language server

Caused by:
    ** (ErlangError) Erlang error: {:erpc, :noconnection}
        (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
        (xp_expert 0.1.0-2c2b7f4) lib/expert/provider/handlers/formatting.ex:16: XPExpert.Provider.Handlers.Formatting.handle/2
        (xp_expert 0.1.0-2c2b7f4) lib/expert.ex:94: XPExpert.handle_request/2
        (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
        (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
        (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

[nickgnd]

Hey @nbernardes 👋
I had the same error lately and for me was because of the different PATH env format in fish shell compared to other shells (e.g. bash/zsh). tldr; the Elixir executable is not found and downstream it returns this error (ErlangError) Erlang error: {:erpc, :noconnection}.

Check this issue #59

[nbernardes]

@nickgnd I use zsh and not fish, so I'm unsure if my issue is similar to yours. Also if it's important I use mise and don't have asdf installed, which removes some other possibilityies from #59

[Terbium-135]

Format is working for me again after upgrading/switching to
Elixir: 1.19.1-otp28
Erlang: OTP28.1.1

Just had a quick glance at the announcements and saw a bug in ERTS being fixed

[nbernardes]

In my case it didn't solve upgrading versions. Seeing this error

Couldn't find an elixir executable for project at /Users/bernardes/Developer/frog. Using shell at /bin/zsh with PATH=Restored session: Tue Oct 21 11:57:46 WEST 2025
/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/bin:/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/.mix/escripts:/Users/bernardes/.local/share/mise/installs/erlang/28.1.1/bin:/Users/bernardes/.local/share/mise/installs/node/22.20.0/bin:/Users/bernardes/.local/share/mise/installs/just/1.43.0:/Users/bernardes/.local/share/mise/installs/python/3.13.7/bin:/Users/bernardes/.local/share/mise/installs/yarn/4.10.3/bin:/Users/bernardes/.local/share/mise/installs/zig/0.14.1/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-2c2b7f4/erts-15.2.7/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-2c2b7f4/bin
** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-2c2b7f4) lib/expert/provider/handlers/code_action.ex:16: XPExpert.Provider.Handlers.CodeAction.handle/2
    (xp_expert 0.1.0-2c2b7f4) lib/expert.ex:94: XPExpert.handle_request/2
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
    (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

[nickgnd]

@nbernardes from your logs, it looks like the PATH env variable is not populated and therefore it cannot find the Elixir executable.

The path is returned by this command {path, 0} = System.cmd(shell, ["-i", "-l", "-c", "cd #{directory} && echo $PATH"]) here

[ggarciajr]

I'm having the same issue as @nbernardes and just like for him, upgrading versions didn't solve the issue.
Running echo $PATH inside the project directory shows the path to the erlang and elixir bin directories are set.

I'm using mise to install and manage the elixir/erlang versions.

Env:
Macbook pro running Tahoe
Elixir: 1.19.1-otp28
Erlang: OTP28.1.1

[nbernardes]

Same as @ggarciajr

[ggarciajr]

Latest release fixed the issue for me. Both Zed and neovim are working again.

[nbernardes]

In my case, on the newer version, I'm still getting the same errors

Couldn't find an elixir executable for project at /Users/bernardes/Developer/frog. Using shell at /bin/zsh with PATH=Restored session: Wed Oct 22 14:35:10 WEST 2025
/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/bin:/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/.mix/escripts:/Users/bernardes/.local/share/mise/installs/erlang/28.1.1/bin:/Users/bernardes/.local/share/mise/installs/node/22.20.0/bin:/Users/bernardes/.local/share/mise/installs/just/1.43.0:/Users/bernardes/.local/share/mise/installs/python/3.13.7/bin:/Users/bernardes/.local/share/mise/installs/yarn/4.10.3/bin:/Users/bernardes/.local/share/mise/installs/zig/0.14.1/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-9803293/erts-15.2.7/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-9803293/bin
** (ErlangError) Erlang error: {:erpc, :noconnection}
    (kernel 10.2.7.1) erpc.erl:1376: :erpc.call/5
    (xp_expert 0.1.0-9803293) lib/expert/provider/handlers/formatting.ex:16: XPExpert.Provider.Handlers.Formatting.handle/2
    (xp_expert 0.1.0-9803293) lib/expert.ex:94: XPExpert.handle_request/2
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:369: anonymous fn/2 in XPGenLSP.loop/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 0.11.1) lib/gen_lsp.ex:368: anonymous fn/5 in XPGenLSP.loop/3
    (xp_gen_lsp 0.11.1) lib/gen_lsp.ex:592: anonymous fn/4 in XPGenLSP.attempt/4
    (elixir 1.17.3) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2

When I verify the path on the project folder I can find the elixir and erlang mise installs.

➜  frog git:(main) ✗ showpath
/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/bin
/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/.mix/escripts
/Users/bernardes/.local/share/mise/installs/erlang/28.1.1/bin
/Users/bernardes/.local/share/mise/installs/node/22.20.0/bin
/Users/bernardes/.local/share/mise/installs/just/1.43.0
/Users/bernardes/.local/share/mise/installs/python/3.13.7/bin
/Users/bernardes/.local/share/mise/installs/yarn/4.10.3/bin
/Users/bernardes/.local/share/mise/installs/zig/0.14.1/bin
...

Edit: Seems to be an expert specific problem, as other language servers are still working as expected.

[mhanberg]

If we look closely, the PATH expert is extracting for you is malformed

PATH=Restored session: Wed Oct 22 14:35:10 WEST 2025
/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/bin:/Users/bernardes/.local/share/mise/installs/elixir/1.19.1-otp-28/.mix/escripts:/Users/bernardes/.local/share/mise/installs/erlang/28.1.1/bin:/Users/bernardes/.local/share/mise/installs/node/22.20.0/bin:/Users/bernardes/.local/share/mise/installs/just/1.43.0:/Users/bernardes/.local/share/mise/installs/python/3.13.7/bin:/Users/bernardes/.local/share/mise/installs/yarn/4.10.3/bin:/Users/bernardes/.local/share/mise/installs/zig/0.14.1/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-9803293/erts-15.2.7/bin:/Users/bernardes/Library/Application Support/.burrito/expert_erts-15.2.7_0.1.0-9803293/bin

For some reason, when we are attempting to fetch your PATH, the shell is printing that "Restored session" message, which i assume is messing everything up.

[mhanberg]

Also, if we can't find an elixir executable, we should shut down and send an error message to the editor. cc @doorgan

[mhanberg]

Related https://apple.stackexchange.com/questions/458704/how-to-turn-off-zsh-save-restore-session-in-terminal-app