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+#import "@preview/touying:0.6.3": *
+#import "@preview/cjk-unbreak:0.2.0": remove-cjk-break-space
+#import "@preview/cetz:0.5.2"
+#import "@preview/cetz-plot:0.1.4": plot
+#import "setoka.typ": *
+
+#show: remove-cjk-break-space
+
+#show: setoka-theme.with(
+  aspect-ratio: "16-9",
+  config-info(
+    title: [
+      最近作っている\
+      Rust 製 Composer の進捗
+    ],
+    subtitle: [PHPerKaigi mini \#1],
+    author: [nsfisis (いまむら)],
+    date: datetime(year: 2026, month: 5, day: 25),
+  ),
+)
+
+#set text(font: "BIZ UDPGothic", lang: "ja")
+#show raw: set text(font: "UDEV Gothic 35")
+
+#let color-composer = rgb("#3b82f6")
+#let color-mozart = rgb("#e2682b")
+
+#title-slide()
+
+#[
+  #set align(center + horizon)
+  #set text(size: 60pt)
+
+  biome oxc esbuild\
+  uv bun......
+]
+
+---
+
+#[
+  #set align(center + horizon)
+
+  #grid(
+    columns: (auto, auto, auto),
+    column-gutter: 0.6em,
+    align: horizon,
+    text(size: 64pt)[世は大],
+    text(size: 22pt)[
+      その言語で書かれた\
+      ツールチェーンを\
+      速そうな別言語で\
+      書き直して生産性を\
+      引き上げていけたら\
+      いいんじゃないか
+    ],
+    text(size: 64pt)[時代],
+  )
+]
+
+---
+
+#[
+  #set align(center + horizon)
+
+  #text(size: 56pt)[Mago（旧 Fennec）]
+
+  #v(0.5em)
+
+  #text(size: 32pt)[linter, formatter, static analyzer......]
+]
+
+---
+
+#[
+  #set align(center + horizon)
+
+  Composer は\
+  置き換えないの？
+]
+
+---
+
+#[
+  #set align(horizon)
+  #set text(size: 36pt)
+
+  #grid(
+    columns: (auto, auto),
+    column-gutter: 0.4em,
+    align: top,
+    [A.],
+    [
+      I/O bound だから速くならないよ。\
+      エコシステム分断するし。\
+      PHP 製の Composer plugin も\
+      サポートできないでしょ
+    ],
+  )
+]
+
+---
+
+#[
+  #set align(center + horizon)
+
+  本当か？
+]
+
+---
+
+#[
+  #set align(center + horizon)
+
+  Rust 製 Composer
+
+  #v(0.5em)
+
+  Mozart
+]
+
+---
+
+#[
+  #set align(center + horizon)
+  #set text(size: 9pt, fill: black)
+
+  // hyperfine による計測結果 (10 runs)
+  #let labels = (
+    [composer/no-cache], [mozart/no-cache], [composer/cache], [mozart/cache],
+  )
+  #let vals = (21.516, 136.072, 5.988, 7.877)
+  #let errs = (1.177, 20.269, 0.276, 0.094)
+  #let cols = (color-composer, color-mozart, color-composer, color-mozart)
+
+  #cetz.canvas({
+    import cetz.draw: *
+
+    // 背景
+    rect((-3.3, -1.6), (12.4, 9.4), fill: white, stroke: none)
+
+    set-style(
+      axes: (
+        stroke: black,
+        tick: (stroke: black),
+        grid: (stroke: rgb("#cccccc") + 0.5pt),
+      ),
+    )
+
+    plot.plot(
+      size: (12, 7),
+      axis-style: "left",
+      x-min: 0,
+      x-max: 4,
+      y-min: 0,
+      y-max: 145,
+      x-tick-step: none,
+      x-ticks: range(4).map(i => (i + 0.5, text(size: 8pt)[#labels.at(i)])),
+      y-tick-step: none,
+      y-ticks: range(0, 141, step: 20).map(v => (v, text(size: 9pt)[#v s])),
+      y-grid: true,
+      y-label: text(size: 11pt)[実行時間 (秒)],
+      x-label: none,
+      legend: none,
+      {
+        for i in range(4) {
+          plot.add-bar(
+            ((i + 0.5, vals.at(i)),),
+            bar-width: 0.6,
+            style: (fill: cols.at(i), stroke: none),
+          )
+        }
+        plot.annotate({
+          for i in range(4) {
+            let x = i + 0.5
+            let v = vals.at(i)
+            let e = errs.at(i)
+            line((x, v - e), (x, v + e), stroke: black + 1.2pt)
+            line((x - 0.1, v + e), (x + 0.1, v + e), stroke: black + 1.2pt)
+            line((x - 0.1, v - e), (x + 0.1, v - e), stroke: black + 1.2pt)
+          }
+        })
+      },
+    )
+
+    // 凡例
+    let ly = 8.4
+    rect((0, ly - 0.18), (0.36, ly + 0.18), fill: color-composer, stroke: none)
+    content((0.5, ly), text(size: 10pt)[composer], anchor: "west")
+    rect((3.0, ly - 0.18), (3.36, ly + 0.18), fill: color-mozart, stroke: none)
+    content((3.5, ly), text(size: 10pt)[mozart], anchor: "west")
+    content(
+      (6.0, ly),
+      text(size: 10pt)[誤差棒 = 標準偏差 σ（10回実行）],
+      anchor: "west",
+    )
+  })
+]
+
+---
+
+#[
+  #set align(horizon)
+
+  現在書き直し中\
+  → Shirabe
+]
+
+---
+
+#[
+  #set align(top)
+  #v(0.3em)
+
+  Why Rewrite？
+]
+
+---
+
+#[
+  #set align(horizon)
+
+  Why Rewrite？
+
+  #v(1.5em)
+
+  #h(1em) Plugin をサポートしたい！
+]
+
+---
+
+#[
+  #set align(horizon)
+  #set text(size: 40pt)
+
+  Rust のデータ構造を\
+  PHP のクラス構造に寄せる
+
+  #v(1em)
+
+  可能な限り「そのまま」移植
+]
+
+---
+
+#[
+  #set align(top)
+  #v(0.3em)
+
+  まとめ
+
+  #set text(size: 34pt)
+  #v(0.5em)
+
+  - Rust 製 Composer を開発中
+  - 現在大幅に書き直し中
+  - Plugin を含めた *100%* 互換を目指す
+]