utils: comply with elixir 1.19 soft-requirement for parallel compiles

Elixir 1.19 now requires (with a deprecation warning) return_diagnostics
to be set to true for parallel compiles. However, this parameter was only
added in Elixir 1.15, so this raises our base requirement.
Since Elixir 1.14 is EOL anyway now this shoulöd be fine though.

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### BREAKING
+- Elixir 1.14 is no longer suported, but EOL anyway. Upgrade to Elixir 1.15+
+
 ### REMOVED
 
 ### Added

docs/docs/installation/generic_dependencies.include

@@ -1,7 +1,7 @@
 ## Required dependencies
 
 * PostgreSQL 12+
-* Elixir 1.14.1+ (currently tested up to 1.18)
+* Elixir 1.15+ (currently tested up to 1.19)
 * Erlang OTP 25+ (currently tested up to OTP27)
 * git
 * file / libmagic

lib/pleroma/utils.ex

@@ -16,7 +16,7 @@ defmodule Pleroma.Utils do
   def compile_dir(dir) when is_binary(dir) do
     dir
     |> elixir_files()
-    |> Kernel.ParallelCompiler.compile()
+    |> Kernel.ParallelCompiler.compile(return_diagnostics: true)
   end
 
   defp elixir_files(dir) when is_binary(dir) do

mix.exs

@@ -5,7 +5,7 @@ defmodule Pleroma.Mixfile do
     [
       app: :pleroma,
       version: version("3.17.0"),
-      elixir: "~> 1.14.1 or ~> 1.15",
+      elixir: "~> 1.15",
       elixirc_paths: elixirc_paths(Mix.env()),
       compilers: Mix.compilers(),
       xref: [exclude: [:eldap]],

test/pleroma/utils_test.exs

@@ -15,7 +15,8 @@ defmodule Pleroma.UtilsTest do
 
   describe "compile_dir/1" do
     test "recursively compiles directories" do
-      {:ok, [DynamicModule.First, DynamicModule.Second], []} =
+      {:ok, [DynamicModule.First, DynamicModule.Second],
+       %{runtime_warnings: [], compile_warnings: []}} =
         Pleroma.Utils.compile_dir("test/fixtures/runtime_modules")
     end
   end