Papipo

Papipo

Request for testers: Gleam support in Mix

Hi!

I have a PR on the elixir repo that adds support for gleam in Mix.

There you’ll find the instructions to test the feature before it’s released. It will allow you to add gleam path dependencies in your mix.exs file without the need for the mix_gleam archive.

Please try it out and report back with your findings, if any.

Thanks,
Rodrigo.

First Post! Switch mode

lostbean

lostbean

Thanks for working on this PR Rodrigo! It’s coming in at a perfect timing :smiley:

Today I was trying to set up a new umbrella repo and import an external Gleam project. I had started with gleam_mix but was clearly having issues given my umbrella + external Gleam project setup. Then I found this post and I’m super grateful for the help to get this working.

I just compiled your branch (I’m using Nix with src overlay) and rewound the gleam_mix config. At first I got this error:

12:19:03.397 [error] beam/beam_load.c(583): Error loading function ‘Elixir.Hex.Netrc.Cache’:fetch/1: op make_fun2 u: please re-compile this module with an Erlang/OTP 27 compiler or update your Erlang/OTP version

That was easy to fix by wiping out project and home folder caches (e.g. rm -rf ~/.mix).

Now when I run mix deps.get, I’m getting this:

zsh ❯ mix deps.get
error: unrecognized subcommand 'package-information'

  tip: a similar subcommand exists: 'package-interface'

Usage: gleam export <COMMAND>

For more information, try '--help'.
** (Mix) Command "gleam export package-information --out /dev/stdout" failed with reason:

I believe that is because I’m running on Gleam 1.9.1. Should it be using the ‘package-interface’ given this is the newest version?

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Papipo

Papipo OP

I have pushed a new possible fix for all this stuff

Papipo

Papipo OP

They said:

If you’re using the compile-package API it does not because it cannot tell all the beam modules until after they are compiled, but that’s not the job of Gleam in that case.

And I can’t just create a minimal one because

It would be incorrect if there are Elixir modules in the package

I think once files are compiled there is probably something in mix I can use to generate the .app file? I can then inject Erlang options from gleam.toml

lpil

lpil

Creator of Gleam

The Gleam compiler only generates Erlang from Gleam modules, but it doesn’t know what any Elixir modules in the package expand to, so it cannot create .app files unless it owns the whole project and so will be performing Elixir and Erlang compilation. This means that any build tool that uses the Gleam compiler will need to generate the required BEAM .beam and .app files.

edit: Oops, I saw Papipo beat me to it!

Last Post!

Papipo

Papipo OP

Please anyone that has tested this, provide your feedback over the PR, even if it’s to say that it works flawlessly. Thanks.

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