Who contributed to Elixir & Phoenix on August 5, 2026?

3 developers shipped this update, including github-actions[bot], josevalim, and greg-rychlewski.

What were the notable Elixir & Phoenix updates?

v1.20.3, Streamline generated AGENTS.md usage rules, and fix selecting list of fields and map/2 from subquery.

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ELIXIR 1.20.3 TIGHTENS TYPE CHECKING, PHOENIX CUTS AGENT GUIDANCE BLOAT

By RepoJournal · Filed 07:01 UTC on August 5, 2026 · About Elixir & Phoenix

3 people shipped this

github-actions[bot] @github-actions[bot] 1 cited

josevalim @josevalim 1 cited

greg-rychlewski @greg-rychlewski 1 cited

Elixir shipped a compiler speedup and five type precision fixes that close the gaps developers keep finding in map and tuple handling.

Elixir v1.20.3 landed with a parallel compiler enhancement batching type checker cache operations to accelerate compilation times [1]. The release also fixes type precision across five separate bugs: the `++/2` operator, `send/2` return types, `and/2` and `or/2` type refinement, `Map.put/3` on empty maps, and tuple insertion on equivalent types [1]. These fixes matter because they eliminate false positives in dialyzer and catch actual type mismatches you might have missed. Over in Phoenix, José Valim consolidated the generated AGENTS.md guidance by removing now-commonplace setup instructions and mistakes that already trigger compiler errors, leaving only the rules that signal real intent [2]. Meanwhile, Ecto is working through a subquery field selection bug [3] that affects list selections and map/2 operations from nested queries.

Action items

→ Upgrade to Elixir 1.20.3 before your next deploy elixir-lang/elixir [plan]
→ Regenerate Phoenix project AGENTS.md after upgrading phoenixframework/phoenix [plan]
→ Watch Ecto PR#4777 for subquery field selection fix elixir-ecto/ecto [monitor]

References

[1] v1.20.3 ↗ elixir-lang/elixir
[2] Streamline generated AGENTS.md usage rules ↗ phoenixframework/phoenix
[3] fix selecting list of fields and map/2 from subquery ↗ elixir-ecto/ecto

Quick answers

What shipped in Elixir & Phoenix on August 5, 2026?: Elixir shipped a compiler speedup and five type precision fixes that close the gaps developers keep finding in map and tuple handling. In total, 2 commits, 2 pull requests, and 1 releases landed.
Who contributed to Elixir & Phoenix on August 5, 2026?: 3 developers shipped this update, including github-actions[bot], josevalim, and greg-rychlewski.
What were the notable Elixir & Phoenix updates?: v1.20.3, Streamline generated AGENTS.md usage rules, and fix selecting list of fields and map/2 from subquery.

ELIXIR BUMPS ZIZMOR SECURITY SCANNER TO 1.28.0

The Elixir repo updated its CI security action overnight, pulling in the latest zizmor static analysis tooling.

elixir 1 shipped

Elixir & Phoenix Aug 4

PHOENIX TIGHTENS OUTPUT FORMATTING WHILE ELIXIR PATCHES DEPRECATION DOCS

Phoenix now enforces single trailing newlines in generated files to eliminate code churn, while the Elixir team corrects documentation errors in core modules.

elixir 14 shipped

Elixir & Phoenix Aug 3

SQLITE TEST FLAKES FIXED, DATETIME CASTING BREAKING CHANGE LANDS

Phoenix killed a long-standing SQLite test flakey that has haunted generated apps since day one, while Ecto ships a backward-incompatible DateTime normalization that tightens UTC handling.

elixir 12 shipped

Elixir & Phoenix Aug 2

ELIXIR CUTS DURATION PARSING AND TUPLE MATH OVERHEAD

Two core optimizations shipped overnight eliminate redundant passes and stack allocations across Calendar and tuple operations.

elixir 4 shipped

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WIKI TRANSLATION ROLLBACK CHAOS, MIRROR STACK HOLDING STEADY

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@dotnet Aug 6

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