munich-quantum-toolkit · renovate · Jun 23, 2026 · Jun 23, 2026 · Jun 23, 2026 · Jun 23, 2026
diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
@@ -10,7 +10,7 @@ on:
 jobs:
   build-sdist:
     name: 🐍 Packaging
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-sdist.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-sdist.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
 
   # Builds wheels on all supported platforms using cibuildwheel.
   # The wheels are uploaded as GitHub artifacts `dev-cibw-*` or `cibw-*`, depending on whether the workflow is triggered from a PR or a release, respectively.
@@ -28,7 +28,7 @@ jobs:
             windows-2022,
             windows-11-arm,
           ]
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-wheel-cibuildwheel.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-wheel-cibuildwheel.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
 

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   change-detection:
     name: 🔍 Change
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-change-detection.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-change-detection.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
 
   cpp-tests-ubuntu:
     name: 🇨‌ Test 🐧
@@ -32,7 +32,7 @@ jobs:
           - runs-on: ubuntu-24.04
             compiler: gcc
             preset: debug
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-ubuntu.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-ubuntu.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
       compiler: ${{ matrix.compiler }}
@@ -52,7 +52,7 @@ jobs:
           - runs-on: macos-26
             compiler: clang
             preset: debug
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-macos.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-macos.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
       compiler: ${{ matrix.compiler }}
@@ -72,7 +72,7 @@ jobs:
           - runs-on: windows-2022
             compiler: msvc
             preset: debug-windows
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-windows.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-tests-windows.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
       compiler: ${{ matrix.compiler }}
@@ -82,7 +82,7 @@ jobs:
     name: 🇨‌ Lint
     needs: change-detection
     if: fromJSON(needs.change-detection.outputs.run-cpp-linter)
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-linter.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-cpp-linter.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       build-project: true
       clang-version: 20
@@ -106,24 +106,24 @@ jobs:
             macos-26-intel,
             windows-2022,
           ]
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-tests.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-tests.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
 
   python-coverage:
     name: 🐍 Coverage
     needs: [change-detection, python-tests]
     if: fromJSON(needs.change-detection.outputs.run-python-tests)
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-coverage.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-coverage.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     permissions:
       contents: read
       id-token: write
 
   python-linter:
     name: 🐍 Lint
     needs: change-detection
-    if: fromJSON(needs.change-detection.outputs.run-python-tests)
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-linter.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    if: fromJSON(needs.change-detection.outputs.run-python-linter)
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-linter.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       check-stubs: true
       enable-ty: true
@@ -133,7 +133,7 @@ jobs:
     name: 🚀 CD
     needs: change-detection
     if: fromJSON(needs.change-detection.outputs.run-cd)
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-sdist.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-sdist.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
 
   build-wheel:
     name: 🚀 CD
@@ -151,7 +151,7 @@ jobs:
             windows-2022,
             windows-11-arm,
           ]
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-wheel-cibuildwheel.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-python-packaging-wheel-cibuildwheel.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
 
@@ -186,7 +186,11 @@ jobs:
             }}
             ${{
               !fromJSON(needs.change-detection.outputs.run-python-tests)
-              && 'python-tests,python-coverage,python-linter,' || ''
+              && 'python-tests,python-coverage,' || ''
+            }}
+            ${{
+              !fromJSON(needs.change-detection.outputs.run-python-linter)
+              && 'python-linter,' || ''
             }}
             ${{
               !fromJSON(needs.change-detection.outputs.run-cd)

diff --git a/.github/workflows/update-mqt-core.yml b/.github/workflows/update-mqt-core.yml
@@ -21,7 +21,7 @@ concurrency:
 jobs:
   update-mqt-core:
     name: ⬆️ Update MQT Core
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-mqt-core-update.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-mqt-core-update.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       update-to-head: ${{ github.event.inputs.update-to-head == 'true' }}
     secrets:

diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         runs-on: [ubuntu-24.04, macos-26, windows-2022]
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-qiskit-upstream-tests.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-qiskit-upstream-tests.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       runs-on: ${{ matrix.runs-on }}
       setup-z3: true
@@ -28,7 +28,7 @@ jobs:
     name: Create issue on failure
     needs: qiskit-upstream-tests
     if: ${{ always() }}
-    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-qiskit-upstream-issue.yml@b17932e07095e11c8f8c0d74298bbcde43f77a15 # v2.1.1
+    uses: munich-quantum-toolkit/workflows/.github/workflows/reusable-qiskit-upstream-issue.yml@e7f84f39ce2d3b6c5d1d04526b8f94f98e455143 # v2.2.0
     with:
       tests-result: ${{ needs.qiskit-upstream-tests.result }}
     permissions:

diff --git a/cmake/ExternalDependencies.cmake b/cmake/ExternalDependencies.cmake
@@ -43,17 +43,12 @@ FetchContent_Declare(
   Eigen3
   GIT_REPOSITORY https://gitlab.com/libeigen/eigen.git
   GIT_TAG ${EIGEN_VERSION}
-  GIT_SHALLOW TRUE)
+  GIT_SHALLOW TRUE
+  # null is a non-existent subdirectory in Eigen3's repository, so add_subdirectory() becomes a
+  # no-op. This stops Eigen3's own CMakeLists.txt from running, which is only relevant for its
+  # documentation and tests.
+  SOURCE_SUBDIR null)
 list(APPEND FETCH_PACKAGES Eigen3)
-set(EIGEN_BUILD_TESTING
-    OFF
-    CACHE BOOL "Disable testing for Eigen")
-set(BUILD_TESTING
-    OFF
-    CACHE BOOL "Disable general testing")
-set(EIGEN_BUILD_DOC
-    OFF
-    CACHE BOOL "Disable documentation build for Eigen")
 
 if(BUILD_MQT_DEBUGGER_TESTS)
   set(gtest_force_shared_crt
@@ -70,5 +65,8 @@ endif()
 # Make all declared dependencies available.
 FetchContent_MakeAvailable(${FETCH_PACKAGES})
 
+add_library(Eigen3::Eigen INTERFACE IMPORTED)
+set_target_properties(Eigen3::Eigen PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${eigen3_SOURCE_DIR}")
+
 # Hide Eigen3 warnings
 get_target_property(Eigen3_Includes Eigen3::Eigen INTERFACE_INCLUDE_DIRECTORIES)