elixir repl won't work on windows, because the wrong program is executed

[whatlaa]

On windows, iex is iex.bat. There's another program called iex that clashes with iex.bat. Here's the suggested change to fix this issue:

;; fnl/conjure/client/elixir/stdio.fnl line 49
(config.merge
  {:client
   {:elixir
    {:stdio
     {:command (if (= (. (vim.loop.os_uname) "sysname") "Windows_NT") "iex.bat --no-color" "iex --no-color"); M.start will overwrite this.
      :standalone_command (if (= (. (vim.loop.os_uname) "sysname") "Windows_NT") "iex.bat --no-color" "iex --no-color")
      :prompt_pattern "iex%(%d+%)> "}}}})

[Olical]

Good catch, we do have some helper functions to check for windows already though, I'll have to go look up the exact name. Thanks for the warning.

…

On Sat, 3 Jan 2026, 11:28 whatlaa, ***@***.***> wrote: *whatlaa* created an issue (Olical/conjure#747) <#747> On windows, iex is iex.bat. There's another program called iex that clashes with iex.bat. Here's the suggested change to fix this issue: ;; fnl/conjure/client/elixir/stdio.fnl line 49 (config.merge {:client {:elixir {:stdio {:command (if (= (. (vim.loop.os_uname) "sysname") "Windows_NT") "iex.bat --no-color" "iex --no-color"); M.start will overwrite this. :standalone_command (if (= (. (vim.loop.os_uname) "sysname") "Windows_NT") "iex.bat --no-color" "iex --no-color") :prompt_pattern "iex%(%d+%)> "}}}}) — Reply to this email directly, view it on GitHub <#747>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACM6XJP3MGNC2ZE3AY76TT4E6RW5AVCNFSM6AAAAACQSYQ34GVHI2DSMVQWIX3LMV43ASLTON2WKOZTG43TOOJXHE2TIOI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[russtoku]

Thanks for the feedback!
Good to have info about Windows shared because it's been a very long time since I've used it and I can't think of things that are of concern when using it.

[russtoku]

Until a fix is committed, a quick work-around is to add a configuration item to your Neovim configuration.

In Lua:

vim.g["conjure#client#elixir#stdio#standalone_command"] = "iex.bat --no-color"

or in Vimscript:

let g:conjure#client#elixir#stdio#standalone_command = "iex.bat --no-color"

The Elixir client will use the conjure#client#elixir#stdio#standalone_command item to set the command that is used to start up the interactive Elixir environment. It will also look for a mix project file, mix.exs, in the current working directory of Neovim and add the "-S mix" option to the command. This will load the project dependencies for the interactive environment.

[whatlaa]

Oh, thanks for that. I didn't know I could do that. Much preferred to changing Conjure's source code.

[russtoku]

Is a fix needed for this?

[Olical]

I've added some logic for this but don't have any Windows setups to test on, please let me know if that helps!

[Olical]

Closing pre-emptively, please re-open if you have issues.

[whatlaa]

Looks good here