Who contributed to Elixir & Phoenix on May 17, 2026?

1 developer shipped this update, including preciz.

What were the notable Elixir & Phoenix updates?

Deprecate xref: [exclude: ...], Fix parse_error input spec (#15393), and Collect diagnostics across clauses in rescue, closes #15307.

Elixir & Phoenix

Elixir, Phoenix, LiveView, and Ecto - the BEAM web stack

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ELIXIR TIGHTENS XREF EXCLUSIONS, PARSER DIAGNOSTICS GET SMARTER

By RepoJournal · Filed 06:04 UTC on May 17, 2026 · About Elixir & Phoenix

1 person shipped this

preciz @preciz 1 cited

Elixir is deprecating the xref exclude syntax and shipping a wave of diagnostic improvements that catch more bugs earlier in the compilation pipeline.

The Elixir team deprecated `xref: [exclude: ...]` configuration [1], signaling a shift in how cross-reference checking will work going forward. This is paired with three targeted fixes that improve error reporting across the language. The parser now correctly specifies its input contract [2], matching what the runtime actually receives as a 4-tuple with indentation data. More importantly, Elixir now collects diagnostics across all rescue clauses [3] instead of stopping at the first one, meaning you'll catch multiple errors in exception handling in a single compile pass. The compiler also infers signatures across application boundaries [4], letting it track types and catch mismatches that previously slipped through. Meanwhile, Phoenix Live View clarified how JS display defaults work [5], fixing subtle behavior in client-side interactions.

Action items

→ Review xref exclusion configuration now - plan migration away from deprecated syntax elixir-lang/elixir [plan]
→ Update to latest Elixir to get cross-boundary signature inference in your next build elixir-lang/elixir [plan]
→ Check Phoenix Live View JS display behavior if using ph-show or ph-hide in rescue flows phoenixframework/phoenix_live_view [monitor]

References

[1] Deprecate xref: [exclude: ...] elixir-lang/elixir
[2] Fix parse_error input spec (#15393) elixir-lang/elixir
[3] Collect diagnostics across clauses in rescue, closes #15307 elixir-lang/elixir
[4] Infer signatures across application boundaries, closes #15360 elixir-lang/elixir
[5] Clarify JS display defaults ↗ phoenixframework/phoenix_live_view

Quick answers

What shipped in Elixir & Phoenix on May 17, 2026?: Elixir is deprecating the xref exclude syntax and shipping a wave of diagnostic improvements that catch more bugs earlier in the compilation pipeline. In total, 5 commits and 2 pull requests landed.
Who contributed to Elixir & Phoenix on May 17, 2026?: 1 developer shipped this update, including preciz.
What were the notable Elixir & Phoenix updates?: Deprecate xref: [exclude: ...], Fix parse_error input spec (#15393), and Collect diagnostics across clauses in rescue, closes #15307.

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