Build failing on Alpine

[freiden]

Hi, It seems like the version 3.22.1 of the library, released 2 days ago, fails to build on Alpine Linux with the following infos:

Compiling relx
===> Compiling src/rlx_topo.erl failed
include/relx.hrl:18: can't find include lib "erlware_commons/include/ec_cmd_log.hrl"
include/relx.hrl:19: can't find include lib "providers/include/providers.hrl"

src/rlx_topo.erl:124: undefined macro 'PRV_ERROR/1'

src/rlx_topo.erl:72: function iterate/3 undefined
src/rlx_topo.erl:117: spec for undefined function iterate/3

src/rlx_topo.erl:144: function subtract/2 is unused
src/rlx_topo.erl:149: function remove_duplicates/1 is unused
src/rlx_topo.erl:166: function remove_pairs/2 is unused

** (Mix) Could not compile dependency :relx, "/root/.mix/rebar3 bare compile --paths "/app/_build/dev/lib/*/ebin"" command failed. You can recompile this dependency with "mix deps.compile relx", update it with "mix deps.update relx" or clean it with "mix deps.clean relx"

It could be due to some erlang dependencies packages not available yet on Alpine or something else.

It seems like @tsloughter met a similar problem with rebar3 in 2015 (https://github.com/erlang/rebar3/issues/349) but didn't indicate how he solved it.

Thanks by advance for your answer.

[lrascao]

does 3.22.0 build ok?

[nlap]

Just seeing this on Ubuntu 16.04 as well

3.22.0 builds fine

[lrascao]

cool, that narrows it down a bit, same OTP versions in both? @freiden any easy way of debugging this on an Alpine Linux?

[freiden]

@lrascao The 3.22.0 build is ok. I'm not sure, I just started playing with it on Docker and I'm still new to how to manage it, sorry.

[lrascao]

k, i'll try the Docker thing then, any image name you recommend?

[freiden]

You can try those images:

• https://hub.docker.com/r/msaraiva/elixir/ or
• https://hub.docker.com/r/bitwalker/alpine-elixir-phoenix/

[nlap]

FYI, the version info for me: Erlang/OTP 19 [erts-8.2] [source-fbd2db2] [64-bit]

[lrascao]

@nlap are you building relx all by itself or as part of some other project? can you post the command to what you're building?

[nlap]

relx is a dependency in exrm, that I'm using to release an Elixir project with mix release

I don't know a lot about how the whole build process works, but it did fail with the exact same rebar3 error as @freiden posted.

Happy to help with debugging however I can. I was able to fix my elixir release by forcing relx version 3.22.0 in my project's top-level mix.exs:

defp deps do  
    [{:relx, "3.22.0"}
    ...]

[lrascao]

can you share your project? or maybe come up with a simple one that exhibits this behaviour?

[nlap]

Hmm, I can't reproduce it now. I brought a 16.04 box up from scratch and tried a similar project but 3.22.2 is compiling fine now. Maybe something else was messed up in that env at the time.

Since I wrote them down already, here are my steps: https://gist.github.com/nlap/0ab724235b00a7207a3867ecd971d31f

[lrascao]

Tristan detected an issue with 3.22.1, marked it as Retired on hex.pm and replaced it with 3.22.2, maybe this explains the behaviour you were getting before and not anymore

[tsloughter]

Ah, yes, most likely.

[freiden]

I updated the library and i seems to work now. Thanks.