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Elixir & Phoenix

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The Wire · Showcase

ELIXIR TIGHTENS QUOTE MACRO SAFETY WITH SHARPER ERROR MESSAGES

By RepoJournal · Filed · About Elixir & Phoenix

Elixir shipped a breaking change that blocks a dangerous metaprogramming pattern, and you need to know what code it flags.

The core team disallowed unquote inside quoted patterns [1], closing a footgun that confused developers and broke silently [2]. This is the kind of safe-by-default change that prevents bugs before they hit production. Alongside that, Elixir fixed dependency compilation logic to only skip cleaning for path dependencies, letting fetch dependencies run through their normal workflow [3]. Meanwhile, Phoenix LiveView added a version check that warns when your tailwind dependency is too old for ColocatedCSS to work properly [4], catching integration issues at dev time instead of deplore time. The ecosystem also rolled routine dependency updates for GitHub Actions and CodeQL analysis tooling [5] [6].

Action items

References

  1. [1] Disallow use of unquote when quote is used in pattern ↗ elixir-lang/elixir
  2. [2] Cleaner error message for unquote when quote is used in a pattern (#15469) elixir-lang/elixir
  3. [3] Fix env outdated deps compilation elixir-lang/elixir
  4. [4] Warn about the need for :tailwind version 0.5+ for ColocatedCSS ↗ phoenixframework/phoenix_live_view
  5. [5] Bump github/codeql-action from 4.36.0 to 4.36.1 ↗ elixir-lang/elixir
  6. [6] Bump actions/checkout from 6.0.2 to 6.0.3 ↗ elixir-lang/elixir

FAQ

What changed in Elixir & Phoenix on June 14, 2026?
Elixir shipped a breaking change that blocks a dangerous metaprogramming pattern, and you need to know what code it flags.
What should Elixir & Phoenix teams do about it?
Audit quoted patterns in your codebase for unquote calls and refactor them before upgrading • If using Phoenix LiveView with ColocatedCSS, ensure tailwind is 0.5+ • Test dependency recompilation workflows after upgrading to verify env cleaning works as expected
Which Elixir & Phoenix repositories shipped on June 14, 2026?
elixir-lang/elixir, phoenixframework/phoenix_live_view

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