run a quick CI on every push

.github/workflows/ci-quick.yml

@@ -0,0 +1,177 @@
+name: Quick CI
+
+# A short version of the CI, designed to run in seconds (<200s) on every push.
+# Runs lints, tests and coverage analysis only on ALL branches EXCEPT main.
+
+on:
+  push:
+    branches-ignore:
+      - main
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - run: python -m pip install --upgrade pip && pip install nox
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - name: Check python formatting and lints (ruff)
+        run: nox -s ruff
+      - name: Check rust formatting (rustfmt)
+        run: nox -s rustfmt
+
+  semver-checks:
+    if: github.ref != 'refs/heads/main'
+    needs: [fmt]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - uses: obi1kenobi/cargo-semver-checks-action@v2
+
+  check-msrv:
+    needs: [fmt]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: 1.56.0
+          targets: x86_64-unknown-linux-gnu
+          components: rust-src
+      - uses: actions/setup-python@v5
+        with:
+          architecture: "x64"
+      - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.event_name != 'merge_group' }}
+      - run: python -m pip install --upgrade pip && pip install nox
+      - name: Prepare minimal package versions
+        run: nox -s set-minimal-package-versions
+      - run: nox -s check-all
+
+    env:
+      CARGO_BUILD_TARGET: x86_64-unknown-linux-gnu
+
+  clippy:
+    needs: [fmt]
+    runs-on: ${{ matrix.platform.os }}
+    strategy:
+      fail-fast: true
+      matrix:
+        rust: [stable]
+        platform: [
+          {
+            os: "macos-14",  # first available arm macos runner
+            python-architecture: "arm64",
+            rust-target: "aarch64-apple-darwin",
+          },
+          {
+            os: "ubuntu-latest",
+            python-architecture: "x64",
+            rust-target: "x86_64-unknown-linux-gnu",
+          },
+          {
+            os: "ubuntu-latest",
+            python-architecture: "x64",
+            rust-target: "powerpc64le-unknown-linux-gnu",
+          },
+          {
+            os: "ubuntu-latest",
+            python-architecture: "x64",
+            rust-target: "s390x-unknown-linux-gnu",
+          },
+          {
+            os: "ubuntu-latest",
+            python-architecture: "x64",
+            rust-target: "wasm32-wasi",
+          },
+          {
+            os: "windows-latest",
+            python-architecture: "x64",
+            rust-target: "x86_64-pc-windows-msvc",
+          },
+          {
+            os: "windows-latest",
+            python-architecture: "x86",
+            rust-target: "i686-pc-windows-msvc",
+          },
+        ]
+        include:
+          # Run beta clippy as a way to detect any incoming lints which may affect downstream users
+          - rust: beta
+            platform:
+              {
+                os: "ubuntu-latest",
+                python-architecture: "x64",
+                rust-target: "x86_64-unknown-linux-gnu",
+              }
+    name: clippy/${{ matrix.platform.rust-target }}/${{ matrix.rust }}
+    continue-on-error: ${{ matrix.rust != 'stable' }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.platform.rust-target }}
+          components: clippy,rust-src
+      - uses: actions/setup-python@v5
+        with:
+          architecture: ${{ matrix.platform.python-architecture }}
+      - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.event_name != 'merge_group' }}
+      - run: python -m pip install --upgrade pip && pip install nox
+      - run: nox -s clippy-all
+    env:
+      CARGO_BUILD_TARGET: ${{ matrix.platform.rust-target }}
+
+  tests:
+    name: test ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ["windows-latest", "macos-14", "ubuntu-latest"]  # first available arm macos runner
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.event_name != 'merge_group' }}
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rust-src
+      - run: python -m pip install --upgrade pip && pip install nox
+      - run: nox -s test
+
+  coverage:
+    needs: [tests]
+    name: coverage ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ["windows-latest", "macos-14", "ubuntu-latest"]  # first available arm macos runner
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.event_name != 'merge_group' }}
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview,rust-src
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+      - run: python -m pip install --upgrade pip && pip install nox
+      - run: nox -s coverage
+      - uses: codecov/codecov-action@v4
+        with:
+          file: coverage.json
+          name: ${{ matrix.os }}
+          token: ${{ secrets.CODECOV_TOKEN }}