Simplify yml generation

.github/workflows/clippy.yml

@@ -32,6 +32,7 @@ jobs:
         uses: ./.github/actions/fix-environment
         with:
           target: x86_64-pc-windows-msvc
+# generated - run `cargo run -p tool_yml` to update
       - name: Check cppwinrt
         run:  cargo clippy -p cppwinrt --tests
       - name: Check csharp_client
@@ -397,4 +398,4 @@ jobs:
       - name: Check windows_x86_64_gnullvm
         run:  cargo clippy -p windows_x86_64_gnullvm --tests
       - name: Check windows_x86_64_msvc
-        run:  cargo clippy -p windows_x86_64_msvc --tests
+        run:  cargo clippy -p windows_x86_64_msvc --tests

.github/workflows/msrv.yml

@@ -20,6 +20,7 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v5
+# generated - run `cargo run -p tool_yml` to update
       - name: Rust version
         run: rustup update --no-self-update 1.74 && rustup default 1.74
       - name: Check cppwinrt
@@ -95,4 +96,4 @@ jobs:
       - name: Rust version
         run: rustup update --no-self-update 1.74 && rustup default 1.74
       - name: Check windows-version
-        run:  cargo check -p windows-version --all-features
+        run:  cargo check -p windows-version --all-features

.github/workflows/no-default-features.yml

@@ -28,6 +28,7 @@ jobs:
         uses: ./.github/actions/fix-environment
         with:
           target: x86_64-pc-windows-msvc
+# generated - run `cargo run -p tool_yml` to update
       - name: Check cppwinrt
         run:  cargo check -p cppwinrt --no-default-features
       - name: Check windows
@@ -65,4 +66,4 @@ jobs:
       - name: Check windows-threading
         run:  cargo check -p windows-threading --no-default-features
       - name: Check windows-version
-        run:  cargo check -p windows-version --no-default-features
+        run:  cargo check -p windows-version --no-default-features

.github/workflows/test.yml

@@ -55,6 +55,7 @@ jobs:
         uses: ./.github/actions/fix-environment
         with:
           target: ${{ matrix.target }}
+# generated - run `cargo run -p tool_yml` to update
       - name: Clean
         run:  cargo clean
       - name: Test cppwinrt
@@ -434,3 +435,4 @@ jobs:
         run: |
           git add -N .
           git diff --exit-code || (echo 'Tests changed code in the repo.'; exit 1)
+

crates/tools/yml/src/clippy.rs

@@ -1,55 +1,17 @@
 use super::*;
 
 pub fn yml() {
-    let mut yml = r"name: clippy
+    write_yml(".github/workflows/clippy.yml", |yml| {
+        // This unrolling is required since "cargo clippy --all" consumes too much memory for the GitHub hosted runners.
+        for manifest in helpers::crates("crates") {
+            let name = manifest.package.name;
 
-on:
-  pull_request:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-  push:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-    branches:
-      - master
-
-jobs:
-  clippy:
-    runs-on: windows-2025
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v5
-      - name: Update toolchain
-        run: rustup update --no-self-update nightly && rustup default nightly-x86_64-pc-windows-msvc
-      - name: Add toolchain target
-        run: rustup target add x86_64-pc-windows-msvc
-      - name: Install clippy
-        run: rustup component add clippy
-      - name: Install rustfmt
-        run: rustup component add rustfmt
-      - name: Fix environment
-        uses: ./.github/actions/fix-environment
-        with:
-          target: x86_64-pc-windows-msvc"
-        .to_string();
-
-    // This unrolling is required since "cargo clippy --all" consumes too much memory for the GitHub hosted runners.
-
-    for manifest in helpers::crates("crates") {
-        let name = manifest.package.name;
-
-        write!(
-            &mut yml,
-            r"
-      - name: Check {name}
+            writeln!(
+                yml,
+                r"      - name: Check {name}
         run:  cargo clippy -p {name} --tests"
-        )
-        .unwrap();
-    }
-
-    std::fs::write(".github/workflows/clippy.yml", yml.as_bytes()).unwrap();
+            )
+            .unwrap();
+        }
+    });
 }

crates/tools/yml/src/main.rs

@@ -4,10 +4,34 @@ mod no_default_features;
 mod test;
 
 use std::fmt::Write;
+use std::io::BufRead;
 
 fn main() {
     test::yml();
     clippy::yml();
     no_default_features::yml();
     msrv::yml();
 }
+
+#[track_caller]
+fn write_yml<F>(path: &str, f: F)
+where
+    F: FnOnce(&mut String),
+{
+    let mut yml = String::new();
+    let file = std::fs::File::open(path).unwrap();
+    let file = std::io::BufReader::new(file);
+
+    for line in file.lines() {
+        let line = line.unwrap();
+        yml.push_str(&line);
+        yml.push('\n');
+
+        if line.starts_with("# generated") {
+            break;
+        }
+    }
+
+    f(&mut yml);
+    std::fs::write(path, yml.as_bytes()).unwrap();
+}

crates/tools/yml/src/msrv.rs

@@ -1,52 +1,27 @@
 use super::*;
 
 pub fn yml() {
-    let mut yml = r"name: msrv
+    write_yml(".github/workflows/msrv.yml", |yml| {
+        for manifest in helpers::crates("crates/libs") {
+            let name = manifest.package.name;
+            let version = manifest.package.rust_version.expect("rust-version");
 
-on:
-  pull_request:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-  push:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-    branches:
-      - master
+            let features = if name == "windows" {
+                // We can't use `--all-features` for the `windows` crate as that would exhaust the available
+                // memory on GitHub VMs so this is just a smoke test for representative Win32 and WinRT APIs.
+                " --features Globalization,Win32_Graphics_Direct2D"
+            } else {
+                " --all-features"
+            };
 
-jobs:
-  msrv:
-    runs-on: windows-2025
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v5"
-        .to_string();
-
-    for manifest in helpers::crates("crates/libs") {
-        let name = manifest.package.name;
-        let version = manifest.package.rust_version.expect("rust-version");
-
-        let features = if name == "windows" {
-            // We can't use `--all-features` for the `windows` crate as that would exhaust the available
-            // memory on GitHub VMs so this is just a smoke test for representative Win32 and WinRT APIs.
-            " --features Globalization,Win32_Graphics_Direct2D"
-        } else {
-            " --all-features"
-        };
-
-        write!(
-            &mut yml,
-            r"
-      - name: Rust version
+            writeln!(
+                yml,
+                r"      - name: Rust version
         run: rustup update --no-self-update {version} && rustup default {version}
       - name: Check {name}
         run:  cargo check -p {name}{features}"
-        )
-        .unwrap();
-    }
-
-    std::fs::write(".github/workflows/msrv.yml", yml.as_bytes()).unwrap();
+            )
+            .unwrap();
+        }
+    });
 }

crates/tools/yml/src/no_default_features.rs

@@ -1,48 +1,15 @@
 use super::*;
 
 pub fn yml() {
-    let mut yml = r"name: no-default-features
-
-on:
-  pull_request:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-  push:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/**'
-      - '.github/workflows/web.yml'
-      - 'web/**'
-    branches:
-      - master
-
-jobs:
-  no-default-features:
-    runs-on: windows-2025
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v5
-      - name: Update toolchain
-        run: rustup update --no-self-update nightly && rustup default nightly-x86_64-pc-windows-msvc
-      - name: Add toolchain target
-        run: rustup target add x86_64-pc-windows-msvc
-      - name: Fix environment
-        uses: ./.github/actions/fix-environment
-        with:
-          target: x86_64-pc-windows-msvc"
-        .to_string();
-
-    for manifest in helpers::crates("crates/libs") {
-        let name = manifest.package.name;
-        write!(
-            &mut yml,
-            r"
-      - name: Check {name}
+    write_yml(".github/workflows/no-default-features.yml", |yml| {
+        for manifest in helpers::crates("crates/libs") {
+            let name = manifest.package.name;
+            writeln!(
+                yml,
+                r"      - name: Check {name}
         run:  cargo check -p {name} --no-default-features"
-        )
-        .unwrap();
-    }
-
-    std::fs::write(".github/workflows/no-default-features.yml", yml.as_bytes()).unwrap();
+            )
+            .unwrap();
+        }
+    });
 }