Who contributed to Elixir & Phoenix on September 18, 2026?

2 developers shipped this update, including Wu Shuwen and Steffen Deusch.

What were the notable Elixir & Phoenix updates?

Bump Tailwind CLI in phx.new templates to 4.3.3 (#6845) and Start 1.3.0-dev.

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Sep 18, 2026

$ the-wire · showcase

phx.new templates pin a Tailwind CLI that fails on macOS, LiveView starts 1.3.0-dev

By RepoJournal · Filed 07:01 UTC on September 18, 2026 · About Elixir & Phoenix · Composed from the cited sources · methodology

2 people shipped this

Wu Shuwen @dajiaohuang 1 cited

Steffen Deusch @SteffenDE 1 cited

Newly generated Phoenix apps ship a Tailwind CLI build whose macOS arm64 binary won't run, while LiveView opens the 1.3.0 development line.

Bump Tailwind CLI in phx.new templates to 4.3.3 (#6845) phoenixframework/phoenix

by Wu Shuwen

Templates now pin the Tailwind CLI to 4.3.3 instead of 4.3.0, whose macOS arm64 binary fails code signature validation and is killed on macOS 27. On that combination `mix phx.server` never builds priv/static/assets/css/app.css, so a freshly generated app renders unstyled; the upstream fix landed in 4.3.1. Regenerating from the updated templates is the fix for projects created before this commit.

Start 1.3.0-dev phoenixframework/phoenix_live_view

by Steffen Deusch

Steffen Deusch opened the 1.3.0 development branch, moving LiveView off the 1.2 line. No feature or breaking-change detail accompanies the branch start, so treat it as the beginning of the cycle rather than something to adopt yet.

Action items

→ Regenerate or re-pin the Tailwind CLI in phx.new projects to 4.3.3 (or newer) if you develop on macOS 27 phoenixframework/phoenix [plan]

$ ls elixir/reviews/ # the step-back reads

the week in review Comments land in the Elixir AST the month in review Elixir core tuning, Ecto breaking change, LiveView patches dominate August

Topics: Elixir & Phoenix Full archive → Weekly reviews →

Quick answers

What shipped in Elixir & Phoenix on September 18, 2026?: Newly generated Phoenix apps ship a Tailwind CLI build whose macOS arm64 binary won't run, while LiveView opens the 1.3.0 development line. In total, 2 commits and 1 pull requests landed.
Who contributed to Elixir & Phoenix on September 18, 2026?: 2 developers shipped this update, including Wu Shuwen and Steffen Deusch.
What were the notable Elixir & Phoenix updates?: Bump Tailwind CLI in phx.new templates to 4.3.3 (#6845) and Start 1.3.0-dev.

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$ log Elixir & Phoenix --recent

2026-09-20 Elixir trims Calendar.ISO parsing and weekday math, densifies coverage accounting 6 shipped 2026-09-19 File stat functions accept open handles, Keyword.drop aligns its membership check 5 shipped 2026-09-17 Elixir reverts duplicate alias detection, stale test deps resolve from source records 8 shipped 2026-09-16 Comment nodes land in the Elixir AST, Ecto normalizes DateTime casts to UTC 21 shipped

$ log --all # elsewhere on the wire

@openclaw 2026-09-20 Cold-start Gateway diagnostics stop crying wolf, doctor repairs plugin drift Agentic Coding 2026-09-20 Cline desktop bundles shrink, goose unblocks its own clicks

$ ls showcases/

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