Releases · erlang/rebar3

This release also contains an experimental and optional change that warrants a bit of explanation: Support rich compiler messages in errors and in warnings

Given the module:

-module(fake_mod).

-export([diagnostic/1]).

diagnostic(A) ->
    X = add(5 / 0),
    {X,X}.

add(X) -> X.

add(X, Y) -> X + Y.

Calling rebar3 compile can now yield:

...
===> Compiling apps/rebar/src/fake_mod.erl failed
   ┌─ apps/rebar/src/fake_mod.erl:
   │
 5 │  diagnostic(A) ->
   │             ╰── variable 'A' is unused

   ┌─ apps/rebar/src/fake_mod.erl:
   │
 6 │      X = add(5 / 0),
   │                ╰── evaluation of operator '/'/2 will fail with a 'badarith' exception

    ┌─ apps/rebar/src/fake_mod.erl:
    │
 11 │  add(X, Y) -> X + Y.
    │  ╰── function add/2 is unused

and in a terminal supporting color output:

By default, this format is turned off, but can be turned on optionally by configuring values with

{compiler_error_format, rich}.

You can get this enabled. You may want to put it in your global rebar3 config file. That being said, this may break some tooling that could parse rebar3-specific output. The default value is {compiler_error_format, minimal}. and putting that value back in should fix any breakage. We're also expecting color output to have a few bugs related to a rather naive heuristic used to delimit language constructs, but we wanted to make the feature available for feedback and this bug-fixing release was a decent opportunity.

This functionality relies on an expanded compiler API exposed by Rebar3, but since we're not yet quite sure what form we want it to take, we'll keep the new API undocumented in the short term.

Assets 3

18 May 01:05

github-actions

3.21.0

5dd033f

3.21.0

New Features:

Various fixes:

bumping a bunch of deps, including certificates, smaller patches in dependencies, and the following relx changes:
- Also set -dist_listen false for relx_nodetool calls
- Force use of nodetool if proto_dist set
- Only overwrite erl with dyn_erl if dyn_erl exists
Add rebar_parallel pool, use in DAG scans which limits memory usage on large projects
Maintain cth_log_redirect default in CT runs to show logger messages in HTML test logs
Change license template to Markdown
rebar3_dialyzer_format: Add missing message formatting
Always dereference symbolic links when copying files in ct
Add ?RTX_LOG macro option to top-level rebar.config
fix help shell output, --eval is misindeted
Ignore _vendor folder
Do not ignore everything starting with underscore recursively
scope local install VSN variable
pkgs command should support empty lists

Assets 3

15 Oct 12:57

github-actions

3.20.0

3f563fe

3.20.0

This release took a while to build; OTP-25.1 had incompatibilities with EUnit that interrupted the CI process, and which are corrected in later releases.

New features:

This new vendor structure should be of no impact to anyone using Rebar3 as a built artifact, but should make the life of corporate users and package managers much easier by having pre-bundled in all dependencies and allowing effective offline builds. It also simplifies our bootstrap code and reduces security issues by not having to download a certificate bundle without certificates, at least until our oldest supported version can use Erlang's new built-in on-host certificate lookup mechanisms.

If you do rely on Rebar3 source for your tooling or any other mechanisms, then you will want to cd apps/rebar before running other commands.

Other fixes: