Add semver-checks workflow

.github/workflows/docs.yml

@@ -31,7 +31,7 @@ jobs:
       # just remove katex-header.html at the root and RUSTDOCFLAGS here
       # TODO(template) update the crate name
       - name: Build documentation
-        run: RUSTDOCFLAGS="--html-in-header katex-header.html" cargo doc --no-deps -p mycrate
+        run: RUSTDOCFLAGS="--html-in-header katex-header.html" cargo doc --no-deps -p template_crate
 
       - name: Remove lock file
         run: rm target/doc/.lock

.github/workflows/semver-checks.yml

@@ -0,0 +1,89 @@
+name: Semver checks
+
+on:
+  pull_request:
+    branches: [ "main" ]
+    paths: ['**/Cargo.toml']  # Only run when Cargo.toml changes
+  push:
+    tags: ['v*']  # Run on version tags
+
+# Limit permissions to minimum required
+permissions:
+  contents: read
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_INCREMENTAL: 0
+
+jobs:
+  semver:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        # cargo-semver-checks needs the full git history to compare versions
+        fetch-depth: 0
+
+    - name: Install Rust toolchain
+      # Pinned to v1: https://github.com/dtolnay/rust-toolchain/releases/tag/v1
+      uses: dtolnay/rust-toolchain@b3b07ba8b418998c39fb20f53e8b695cdcc8de1b
+      with:
+        toolchain: stable
+
+    - name: Cache cargo registry
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-
+
+    - name: Get latest version tag
+      id: get-baseline
+      run: |
+        # Find the latest version tag (v0.1.0 or higher)
+        latest_tag=$(git describe --tags --abbrev=0 --match='v*' 2>/dev/null || echo "")
+        if [ -z "$latest_tag" ]; then
+          echo "No version tags found - skipping semver check"
+          echo "This is normal for new projects or templates"
+          echo "skip=true" >> $GITHUB_OUTPUT
+        else
+          # Extract version without 'v' prefix for comparison
+          version=${latest_tag#v}
+
+          # Check if version is >= 0.1.0 (using semver comparison)
+          if printf '%s\n%s\n' "0.1.0" "$version" | sort -V | head -n1 | grep -q "^0\.1\.0$"; then
+            echo "Found suitable baseline tag: $latest_tag (>= v0.1.0)"
+            echo "baseline_rev=$latest_tag" >> $GITHUB_OUTPUT
+            echo "skip=false" >> $GITHUB_OUTPUT
+          else
+            echo "Found tag $latest_tag but it's < v0.1.0 - skipping semver check"
+            echo "Semver checking typically starts from v0.1.0 when APIs stabilize"
+            echo "skip=true" >> $GITHUB_OUTPUT
+          fi
+        fi
+
+    - name: Check semver compatibility
+      if: steps.get-baseline.outputs.skip == 'false'
+      # Pinned to v2.8: https://github.com/obi1kenobi/cargo-semver-checks-action/releases/tag/v2.8
+      uses: obi1kenobi/cargo-semver-checks-action@5b298c9520f7096a4683c0bd981a7ac5a7e249ae
+      with:
+        baseline-rev: ${{ steps.get-baseline.outputs.baseline_rev }}
+        verbose: true
+
+    - name: Semver check skipped
+      if: steps.get-baseline.outputs.skip == 'true'
+      run: |
+        echo "✅ Semver check skipped - no suitable version tags found"
+        echo "To enable semver checking:"
+        echo "1. Tag your first stable release: git tag v0.1.0"
+        echo "2. Push the tag: git push origin v0.1.0"
+        echo "3. Future changes will be checked against tagged versions"
+        echo ""
+        echo "Note: Semver checking starts from v0.1.0 as this indicates"
+        echo "the beginning of API stability commitments in Rust projects"

CONTRIBUTING.md

@@ -30,8 +30,8 @@ After cloning the repository, follow the instructions below to run the documenta
 cargo doc
 ```
 
-Docs for `TODO(template) template-crate`:
+Docs for `TODO(template) template_crate`:
 
 ```sh
-RUSTDOCFLAGS="--html-in-header katex-header.html" cargo doc --no-deps -p template-crate --open
+RUSTDOCFLAGS="--html-in-header katex-header.html" cargo doc --no-deps -p template_crate --open
 ```

Cargo.toml

@@ -1,9 +1,9 @@
 
 # TODO(template) update for the crate name
 [workspace]
-members = ["examples", "mycrate"]
+members = ["examples", "template_crate"]
 resolver = "2"
-default-members = ["mycrate"]
+default-members = ["template_crate"]
 
 [workspace.package]
 version = "0.1.0"

examples/Cargo.toml

@@ -8,4 +8,4 @@ license.workspace = true
 
 [dependencies]
 # TODO(template) update the crate name
-mycrate = { path = "../mycrate" }
+template_crate = { path = "../template_crate" }

examples/README.md

@@ -9,4 +9,4 @@ To run an example
 cargo run -p examples --bin addition
 ```
 
-* `addition` - shows how to add two bounded integers with the [`mycrate`](../mycrate/) library.
+* `addition` - shows how to add two bounded integers with the [`template_crate`](../template_crate/) library.

examples/src/bin/addition.rs

@@ -1,5 +1,5 @@
 // TODO(template) - remove/change the code below and rename the example
-use mycrate::add_small_integers;
+use template_crate::add_small_integers;
 
 fn main() {
     println!("{:?}", add_small_integers(6, 8));

mycrate/Cargo.toml → template_crate/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 # TODO(template) rename
-name = "mycrate"
+name = "template_crate"
 version.workspace = true
 edition.workspace = true
 repository.workspace = true