Unable to compile in alpine linux

[jwaldrip]

Having difficulty compiling the app with appsignal. This was working a day ago and suddenly stopped.

To Reproduce

mix compile

produces the error

Downloading agent release from https://appsignal-agent-releases.global.ssl.fastly.net/e1c9363/appsignal-x86_64-linux-musl-all-static.tar.gz
could not compile dependency :appsignal, "mix compile" failed. You can recompile this dependency with "mix deps.compile appsignal", update it with "mix deps.update appsignal" or clean it with "mix deps.clean appsignal"
** (Protocol.UndefinedError) protocol String.Chars not implemented for {:invalid, {:error, {:error, {:option, :server_only, :honor_cipher_order}}}} of type Tuple
    (elixir) lib/string/chars.ex:3: String.Chars.impl_for!/1
    (elixir) lib/string/chars.ex:22: String.Chars.to_string/1
    mix_helpers.exs:515: Mix.Appsignal.Helper.write_report_file/2
    mix_helpers.exs:544: Mix.Appsignal.Helper.abort_installation/2
    (mix) lib/mix/task.ex:331: Mix.Task.run_task/3
    (mix) lib/mix/tasks/compile.all.ex:73: Mix.Tasks.Compile.All.run_compiler/2
    (mix) lib/mix/tasks/compile.all.ex:53: Mix.Tasks.Compile.All.do_compile/4
    (mix) lib/mix/tasks/compile.all.ex:24: anonymous fn/1 in Mix.Tasks.Compile.All.run/1
The command '/bin/sh -c mix compile --warnings-as-errors' returned a non-zero code: 1

Steps to reproduce the behavior:

• Using AppSignal for Elixir package version 1.10.12
• In my app using framework/library ... version elixir:1.9.1-alpine

[gabrielrinaldi]

@jwaldrip seems related to #512

[tombruijn]

Hi @jwaldrip, this seems like the same issue as #512. It's related to the Erlang OTP 22.1 update and an incompatibility with the hackney package. Closing this issue in favor of #512