GNU bug report logs - #67877
[PATCH 0/7] Enable Elixir packages that depend on Erlang packages to build

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From: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
To: contact <at> phfrohring.com, 67877 <at> debbugs.gnu.org
Subject: [bug#67877] [PATCH 0/7] Enable Elixir packages that depend on Erlang packages to build
Date: Mon, 18 Dec 2023 15:49:22 +0100

Am Montag, dem 18.12.2023 um 14:02 +0100 schrieb Pierre-Henry Fröhring:
> Hello lylip,
> 
> It's great to see progress!
> 
> I suggest the next objective is to enable Elixir packages that depend
> on Erlang packages to build. For instance, the Elixir package
> [telemetry_metrics] depends on the Erlang telemetry package and is a
> dependency of the Elixir Phoenix package.
> 
> While reviewing the code of the Rebar build system, we noticed the
> use of the [skip_deps] Rebar flag, which is ignored by Rebar:
> ┌────
> │ $ guix shell rebar3 -- rebar3 help compile
> │ […]
> │   -d, --deps_only  Only compile dependencies, no project apps will
> be
> │                    built.
> └────
> 
> So, to build Elixir packages that depend on Erlang, the necessary
> steps inlcude:
> 1) Updating the Rebar build system to align with the current usages
> of Rebar.
> 2) Allowing Elixir to access Erlang compiled libraries as discussed
> in [issue 66801].
> 
> If the following plan is agreed upon, then we will have an Elixir
> package that depends on an Erlang package to build, specifically
> `telemetry_metrics'. Patches in the series will have these
> objectives:
> 
> 1. ☐ Update the Rebar build system to align with the current usages
> of Rebar.
> 2. ☐ Update the Erlang build system to install libraries under
> `lib/erlang/X.Y' as discussed in issue 66801.
> 3. ☐ Update the Erlang package so that `GUIX_ERL_LIBS' gather all
> libraries installed under `lib/erlang/X.Y'.
> 4. ☐ Update the Erlang package to wrap its binaires so that they have
> access to
>    compiled libraries represented by `GUIX_ERL_LIBS'.
> 5. ☐ Add the Erlang Telemetry package.
> 6. ☐ Update the Elixir package so that it has access to Erlang
> packages represented by `GUIX_ERL_LIBS'.
> 7. ☐ Add the Elixir package `telemetry_metrics'.
> 
> If the corresponding patch series is merged, additional packages
> (whether Erlang, Elixir, or other types) will be incorporated until
> Phoenix package builds.
> 
> What do you think of this plan?
Since we typically disable phoning home (including telemetry), I don't
think having a telemetry package in Guix would be good optics :)
Perhaps you can think of another example package but still follow the
steps laid out above?

Cheers

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