Who contributed to Elixir & Phoenix on August 23, 2026?

2 developers shipped this update, including josevalim and reisub.

What were the notable Elixir & Phoenix updates?

Remove none clauses if there are non empty clauses, closes #15777, Add `DateTime` `add/4` and `shift_zone/3` UTC fast path, and Remove none clauses if there are non empty clauses, closes #15777.

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The Wire · Showcase

JOSE VALIM FIXES THE CLASUE BUG

By RepoJournal · Filed 06:59 UTC on August 23, 2026 · About Elixir & Phoenix

2 people shipped this

josevalim @josevalim 3 cited

reisub @reisub 2 cited

Jose Valim shipped two refactors plus the actual fix for that `none` clause compiler issue, and a UTC fast path in DateTime could save you a TZ DB lookup.

Jose Valim landed a fix that removes `none` clauses when non-empty clauses exist, closing #15777 [1]. This one's a compiler behavior change, and he refactored the code first so the fix is easier to follow [1]. Meanwhile, Dino Kovač's `DateTime.add/4` and `shift_zone/3` UTC fast path [2] means UTC datetimes no longer hit the TZ database when the app isn't started [2]. It's a niche issue, but the benchmark data shows real gains on Apple M1 Max [2]. Both are open PRs, so now's the time to review [3]. The compiler change is the one to watch if you've hit that edge case [4]. Skip the domain computation extraction unless you're deep in that code [5].

Action items

→ Review and test PR #15782 for the none clause fix elixir-lang/elixir [plan]
→ Review DateTime UTC fast path PR #15779 for potential performance wins elixir-lang/elixir [plan]

References

[1] Remove none clauses if there are non empty clauses, closes #15777 ↗ elixir-lang/elixir
[2] Add `DateTime` `add/4` and `shift_zone/3` UTC fast path ↗ elixir-lang/elixir
[3] Remove none clauses if there are non empty clauses, closes #15777 elixir-lang/elixir
[4] Add `DateTime` `add/4` and `shift_zone/3` UTC fast path (#15779) elixir-lang/elixir
[5] Extract domain computation into a separate function elixir-lang/elixir

Quick answers

What shipped in Elixir & Phoenix on August 23, 2026?: Jose Valim shipped two refactors plus the actual fix for that `none` clause compiler issue, and a UTC fast path in DateTime could save you a TZ DB lookup. In total, 4 commits and 2 pull requests landed.
Who contributed to Elixir & Phoenix on August 23, 2026?: 2 developers shipped this update, including josevalim and reisub.
What were the notable Elixir & Phoenix updates?: Remove none clauses if there are non empty clauses, closes #15777, Add `DateTime` `add/4` and `shift_zone/3` UTC fast path, and Remove none clauses if there are non empty clauses, closes #15777.

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