Add taplo-fmt CI step (#8095)

.github/workflows/taplo.yml

@@ -0,0 +1,25 @@
+# Checks that all TOML files are formatted with taplo.
+name: Taplo
+
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  taplo:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Taplo
+        uses: taiki-e/install-action@v2.48.7
+        with:
+          tool: taplo-cli@0.9.3
+
+      - name: Check TOML formatting
+        run: |
+          taplo fmt --check

Cargo.toml

@@ -134,12 +134,16 @@ syntect = { version = "5.3.0", default-features = false }
 tempfile = "3.23.0"
 thiserror = "2.0.17"
 tokio = "1.49"
-toml = {version = "1.0.0", default-features = false }
+toml = { version = "1.0.0", default-features = false }
 type-map = "0.5.1"
 unicode_names2 = { version = "2.0.0", default-features = false }
 unicode-general-category = "1.1.0"
 unicode-segmentation = "1.12.0"
-vello_cpu = { version = "0.0.7", default-features = false, features = ["std", "u8_pipeline", "f32_pipeline"] }
+vello_cpu = { version = "0.0.7", default-features = false, features = [
+  "std",
+  "u8_pipeline",
+  "f32_pipeline",
+] }
 wasm-bindgen = "0.2.108" # Keep wasm-bindgen version in sync in: setup_web.sh, Cargo.toml, Cargo.lock, rust.yml. Don't update this spuriously, because of https://github.com/rerun-io/rerun/issues/8766
 wasm-bindgen-futures = "0.4.58"
 wayland-cursor = { version = "0.31.11", default-features = false }

crates/egui_glow/Cargo.toml

@@ -11,7 +11,13 @@ readme = "README.md"
 repository = "https://github.com/emilk/egui/tree/main/crates/egui_glow"
 categories = ["gui", "game-development"]
 keywords = ["glow", "egui", "gui", "gamedev"]
-include = ["../../LICENSE-APACHE", "../../LICENSE-MIT", "**/*.rs", "Cargo.toml", "src/shader/*.glsl"]
+include = [
+  "../../LICENSE-APACHE",
+  "../../LICENSE-MIT",
+  "**/*.rs",
+  "Cargo.toml",
+  "src/shader/*.glsl",
+]
 
 [lints]
 workspace = true
@@ -65,7 +71,6 @@ winit = { workspace = true, optional = true, default-features = false, features
 web-sys = { workspace = true, features = ["console"] }
 wasm-bindgen.workspace = true
 
-
 [dev-dependencies]
 glutin = { workspace = true, default-features = true } # examples/pure_glow
 glutin-winit = { workspace = true, default-features = true }

crates/egui_kittest/Cargo.toml

@@ -38,7 +38,7 @@ egui.workspace = true
 eframe = { workspace = true, optional = true }
 kittest.workspace = true
 serde.workspace = true
-toml = {workspace = true, features = ["parse", "serde"] }
+toml = { workspace = true, features = ["parse", "serde"] }
 
 # wgpu dependencies
 egui-wgpu = { workspace = true, optional = true }

crates/epaint/Cargo.toml

@@ -48,7 +48,14 @@ mint = ["emath/mint"]
 rayon = ["dep:rayon"]
 
 ## Allow serialization using [`serde`](https://docs.rs/serde).
-serde = ["dep:serde", "ahash/serde", "emath/serde", "ecolor/serde", "font-types/serde", "smallvec/serde"]
+serde = [
+  "dep:serde",
+  "ahash/serde",
+  "ecolor/serde",
+  "emath/serde",
+  "font-types/serde",
+  "smallvec/serde",
+]
 
 ## Change Vertex layout to be compatible with unity
 unity = []