feat: support Windows with a Rust Davidson eigensolver

.github/workflows/coverage.yml

@@ -26,10 +26,14 @@ jobs:
         uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: dtolnay/rust-toolchain@stable
       - name: Install tox
         run: |
           python -m pip install --upgrade pip
           pip install tox coverage
+      - name: Build package
+        run: |
+          pip install -e .
       - name: Run coverage
         run: |
           tox -e coverage

.github/workflows/docs.yml

@@ -25,12 +25,16 @@ jobs:
       - uses: actions/setup-python@v7
         with:
           python-version: '3.10'
+      - uses: dtolnay/rust-toolchain@stable
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install tox
           sudo apt-get update
           sudo apt-get install -y pandoc
+      - name: Build package
+        run: |
+          pip install -e .
       - name: Tell reno to name the upcoming release after the branch we are on
         shell: bash
         run: |

.github/workflows/lint.yml

@@ -27,6 +27,13 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install tox
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+      - name: Rust Format
+        run: cargo fmt --all -- --check
+      - name: Clippy
+        run: cargo clippy --all-targets -- -D warnings
       - name: Run lint check
         run: |
           tox -e lint

.github/workflows/release.yml

@@ -8,26 +8,73 @@ on:
 
 jobs:
 
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v6
+      - name: Build distribution
+        run: |
+          python -m pip install --upgrade pip "maturin>=1.9,<2.0" build
+          python -m build --sdist
+      - name: Store the distribution packages
+        uses: actions/upload-artifact@v7
+        with:
+          name: pkg-sdist
+          path: dist/*.tar.gz
+
+  build_wheels:
+    name: Build wheel on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-14, macos-15-intel, windows-latest]
+
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v6
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Build wheel
+        uses: pypa/cibuildwheel@v3.4.0
+      - name: Store the wheel
+        uses: actions/upload-artifact@v7
+        with:
+          name: pkg-wheel-${{ matrix.os }}
+          path: ./wheelhouse/*.whl
+
   github:
-    name: github
+    name: Publish to GitHub
+    if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
+    needs:
+      - build_sdist
+      - build_wheels
     steps:
       - name: Checkout tag
         uses: actions/checkout@v7
+      - name: Download artifacts
+        uses: actions/download-artifact@v8
         with:
-          ref: ${{ github.ref_name }}
+          pattern: pkg-*
+          path: dist
+          merge-multiple: true
       - name: Publish release
         uses: ghalactic/github-release-from-tag@v6
-        if: github.ref_type == 'tag'
         with:
           prerelease: false
-          token: ${{ secrets.GITHUB_TOKEN }}
           generateReleaseNotes: "true"
+          assets: |
+            - path: dist/*
 
   pypi:
-    name: pypi
+    name: Publish to pypi
+    if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
-    needs: github
+    needs:
+      - build_sdist
+      - build_wheels
+      - github
     environment:
       name: pypi
       url: https://pypi.org/p/qiskit-addon-slc
@@ -36,14 +83,11 @@ jobs:
     steps:
       - name: Checkout tag
         uses: actions/checkout@v7
+      - name: Download artifacts
+        uses: actions/download-artifact@v8
         with:
-          ref: ${{ github.ref_name }}
-      - name: Install `build` tool
-        run: |
-          python -m pip install --upgrade pip
-          pip install build
-      - name: Build distribution
-        run: |
-          python -m build
+          pattern: pkg-*
+          path: dist
+          merge-multiple: true
       - name: Publish release to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1

.github/workflows/test_development_versions.yml

@@ -28,12 +28,16 @@ jobs:
         uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: dtolnay/rust-toolchain@stable
       - name: Upgrade pip
         run: |
           python -m pip install --upgrade pip
       - name: Install tools from pypi
         run: |
           python -m pip install tox build extremal-python-dependencies==0.1.0
+      - name: Build package
+        run: |
+          pip install -e .
       - name: Build Qiskit SDK development wheel
         run: |
           git clone https://github.com/Qiskit/qiskit

.github/workflows/test_latest_versions.yml

@@ -25,16 +25,22 @@ jobs:
         include:
           - os: macos-latest
             python-version: "3.13"
+          - os: windows-latest
+            python-version: "3.13"
     steps:
       - uses: actions/checkout@v7
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: dtolnay/rust-toolchain@stable
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install tox
+      - name: Build package
+        run: |
+          pip install -e .
       - name: Test using tox environment
         shell: bash
         run: |

.github/workflows/test_minimum_versions.yml

@@ -26,13 +26,17 @@ jobs:
         uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: dtolnay/rust-toolchain@stable
       - name: Install dependencies (minimum versions)
         shell: bash
         run: |
           python -m pip install --upgrade pip
           python -m pip install extremal-python-dependencies==0.1.0
           pip install "tox==$(extremal-python-dependencies get-tox-minversion)"
           extremal-python-dependencies pin-dependencies-to-minimum --inplace
+      - name: Build package
+        run: |
+          pip install -e .
       - name: Test using tox environment
         run: |
           tox -e py --parallel --parallel-no-spinner

.gitignore

@@ -134,3 +134,8 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# Rust / compiled extension artifacts
+/target/
+*.pyd
+*.pdb