Elixir v1.18.4 released!

NewsBot · 21 May 2025 15:24

Elixir v1.18.4 has been released.

This release includes initial support for Erlang/OTP 28, for those who want to try it out. In such cases, you may use Elixir v1.18.4 precompiled for Erlang/OTP 27, as it is binary compatible with Erlang/OTP 28. Note, however, that Erlang/OTP 28 no longer allows regexes to be defined in the module body and interpolated into an attribute. If you do this:
@some_attribute ~r/foo/
def some_fun, do: @some_attribute
You must rewrite it to:
def some_fun, do: ~r/foo/
1. Enhancements

IEx

[IEx.Helpers] Add IEx.Helpers.process_info/1 which prints process information

Mix

[mix compile] Support the --no-listeners option

[mix local] Retry HTTP requests with disabled middlebox comp mode depending on the failure reason

[mix local.hex] Install Hex per OTP release

[mix local.rebar] Install Hex per OTP release

[mix run] Support the --no-listeners option

2. Bug fixes

Elixir

[Kernel] Emit trace events for @on_definition callbacks

[Kernel] Emit trace events for @on_load callbacks

[Kernel] Emit trace events for super calls

[Kernel] Emit trace events for imported function calls

[Kernel] Optimize map unions to avoid building long lists

[Kernel] Do not crash when type checking nested bitstrings in patterns

[Kernel] Do not crash when non-binary bitstring is given as struct default value

[Kernel] Recompile regexes when escaped from module attributes for Erlang/OTP 28 compatibility

[Kernel] Preserve backwards compatibility in elixir_erl

Mix

[mix deps.get] Ensure git checkout works when there are untracked files in the dependency

[mix loadpaths] Do not run listeners when not checking the deps

Link: Release v1.18.4 · elixir-lang/elixir · GitHub