chore: Merge build-rs / cargo history

Author: epage

build-rs/.github/renovate.json5

@@ -0,0 +1,37 @@
+{
+    "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+    "extends": [
+        "config:recommended",
+        "schedule:weekly",
+        ":disableDependencyDashboard"
+    ],
+    "platformCommit": "enabled",
+    "customManagers": [
+        {
+            "customType": "regex",
+            "description": "Update the minimal supported Rust version in Cargo.toml",
+            "fileMatch": [
+                "(^|/)Cargo\\.toml$"
+            ],
+            "matchStrings": [
+                "(^|\\[package\\])(.|\n)*?($|\n\\s*\\[)", // select package table
+                "rust-version = \"(?<currentValue>\\d+\\.\\d+(\\.\\d+)?)\"" // select rust-version
+            ],
+            "matchStringsStrategy": "recursive",
+            "depNameTemplate": "rust-version",
+            "packageNameTemplate": "rust-lang/rust",
+            "datasourceTemplate": "github-releases",
+            "versioningTemplate": "semver-coerced",
+            "extractVersionTemplate": "^(?<version>\\d+\\.\\d+)" // drop patch version
+        }
+    ],
+    "packageRules": [
+        {
+            "automerge": true,
+            "minimumReleaseAge": "27 weeks", // 6 months + a little slack
+            "matchDepNames": [
+                "rust-version"
+            ]
+        }
+    ]
+}

build-rs/.github/workflows/ci.yaml

@@ -0,0 +1,59 @@
+name: CI
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches:
+      - main
+
+jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        toolchain: ["stable", "stable 6 months ago"]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: ${{ matrix.toolchain }}
+      - name: Build tests
+        run: cargo test --workspace --no-run
+      - name: Run tests
+        run: cargo test --workspace
+
+  style:
+    name: Style
+    runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: -Dwarnings
+      RUSTDOCFLAGS: -Dwarnings
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rustfmt, clippy
+      - name: Install cargo-docs-rs
+        uses: dtolnay/install@cargo-docs-rs
+      - name: Check docs
+        run: cargo docs-rs
+      - name: Check lints
+        run: cargo clippy
+      - name: Check fmt
+        run: cargo fmt -- --check
+
+  semver:
+    name: API
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Semver checks
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          package: build-rs

build-rs/.github/workflows/publish.yaml

@@ -0,0 +1,19 @@
+name: Publish
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Publish
+        run: cargo publish
+        env:
+          CARGO_REGISTRY_TOKEN: ${{secrets.CARGO_REGISTRY_TOKEN}}

build-rs/.gitignore

@@ -0,0 +1 @@
+/target

build-rs/Cargo.lock

@@ -0,0 +1,14 @@
+[package]
+name = "build-rs"
+version = "0.2.0"
+edition = "2021"
+rust-version = "1.76"
+publish = false
+
+[features]
+
+## Experimental API. This feature flag is **NOT** semver stable.
+unstable = []
+
+[workspace]
+members = ["test-lib"]

build-rs/Cargo.toml

@@ -0,0 +1,17 @@
+use std::sync::OnceLock;
+
+fn rust_version_minor() -> u32 {
+    static VERSION_MINOR: OnceLock<u32> = OnceLock::new();
+    *VERSION_MINOR.get_or_init(|| {
+        crate::input::cargo_pkg_rust_version()
+            .split('.')
+            .nth(1)
+            .unwrap_or("70")
+            .parse()
+            .unwrap()
+    })
+}
+
+pub(crate) fn double_colon_directives() -> bool {
+    rust_version_minor() >= 77
+}