Could not start application xmerl: could not find application file: xmerl.app

[hdcos]

Hello when I install your package and run

iex -S mix

I get the following error message from iex:

** (Mix) Could not start application xmerl: could not find application file: xmerl.app

Am I missing something?
I use elixir 1.2 and OTP 18

[hdcos]

Ok sorry I had to install erlang-xmerl on ubuntu

[seantanly]

@hdcos looks like the issue is resolved. Can you close this? :)

[kephas]

How is this closed? I don't see anywhere that the use needs to do anything but mix deps.get. Isn't this a bug?

[Shakadak]

Hi @kephas,

have you also encountered this problem ? xmerl is part of OTP (as can be seen here: https://erlang.org/doc/applications.html, and here: https://github.com/erlang/otp/tree/master/lib/xmerl). I suggest checking your erlang installation to see if anything is missing

[kephas]

As for @hdcos I had to install erlang-xmerl or I would also get Could not start application xmerl: could not find application file: xmerl.app. I'm using Debian Bullseye/Sid. The fact that xmerl is an OTP application doesn't seem to mean it's always present where Erlang is installed.

[Shakadak]

Alright, if I understand better your earlier comment, we need to improve the readme and the documentation to ask the user to ensure that his installation of erlang was done including xmerl

[kephas]

Exactly! Sorry if it wasn't clearer before. I hope the PR would do the trick. The needed package is called erlang-xmerl on several systems with apt and yum. I don't know about binary distributions on Windows and MacOS, I've found at least one issue on Github where someone on MacOS was missing xmerl in their setup.

[Shakadak]

Thanks, I'll keep the issue open for a bit as a reminder for myself to see how I deal with this and the doc for https://hexdocs.pm/