MQT Core 3.4.0 Release

👀 What Changed

Please refer to the changelog and the upgrade guide for a structured overview of the changes.

⚛️ MQT Core IR

• ⬆️🐍 Update dependency ty to v0.0.1a31 (#1338) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))

⚖️ MQT Core DD Package

• ♻️ Move DD package evaluation module to standalone script (#1327) (@burgholzer)

🐉 MQT Core MLIR

• 🐛 shortestSWAPsBetween returns one SWAP too many (#1395) (@MatthiasReumann)
• 🐛 Handling Conditional Branches from QuantumComputation to MLIR (#1378) (@LiRem101)
• ♻️ Apply CRTP to Unit class (#1379) (@MatthiasReumann)
• 👷 Update setup-mlir version (#1360) (@denialhaag)
• ✨Implement Unitized Routing Passes (#1301) (@MatthiasReumann)
• ✨ Add WireIterator (#1310) (@MatthiasReumann)
• 👷 Update MLIR set-up to use self-built versions (#1294) (@denialhaag)

🏼 MQT Core NA Package

• ♻️ Preserve Tuple Structure and Improve Site Type Clarity of the MQT NA Default QDMI Device (#1299) (@marcelwa)

🚀 Features and Enhancements

• 👨‍💻📦 build QDMI generators as shared libraries on install (#1403) (@denialhaag)
• ⚡ Improve uv build caching by removing unconditional reinstall-package and configuring dedicated cache-keys (#1412) (@burgholzer)
• 🚸 Portability improvements for the QIR runner (#1410) (@burgholzer)
• 🚸 expose MQT_CORE_VERSION as part of the add_mqt_core_library macro (#1409) (@burgholzer)
• ♻️🏁 Remove Windows-specific restrictions for dynamic QDMI device library handling (#1406) (@burgholzer)
• ♻️ Replace pybind11 with nanobind (#1383) (@denialhaag)
• ♻️ Allow QDMIBackend to submit multiple circuits per job to be compliant with Qiskit's interface (#1385) (@marcelwa)
• ✨ Instantiate Device from dynamic QDMI device library (#1381) (@marcelwa)
• ♻️ Apply CRTP to Unit class (#1379) (@MatthiasReumann)
• ✨ IQM JSON support in Qiskit-QDMI Backend (#1375) (@marcelwa)
• ✨ QDMI authentication via FoMaC (#1355) (@marcelwa)
• ✨ New QDMI Device to represent SC Devices (#1328) (@ystade)
• ✨Implement Unitized Routing Passes (#1301) (@MatthiasReumann)
• ✨ QDMI Device to Qiskit Backend (#1243) (@marcelwa)
• ✨ Add WireIterator (#1310) (@MatthiasReumann)
• ♻️ Preserve Tuple Structure and Improve Site Type Clarity of the MQT NA Default QDMI Device (#1299) (@marcelwa)
• ♻️ Move DD package evaluation module to standalone script (#1327) (@burgholzer)

🐛 Bug Fixes

• 🐛 shortestSWAPsBetween returns one SWAP too many (#1395) (@MatthiasReumann)
• 🐛 Handling Conditional Branches from QuantumComputation to MLIR (#1378) (@LiRem101)
• 🐛 Allow QDMI Device operation names to differ from Qiskit ones (#1384) (@marcelwa)
• 🐛 Update IQM JSON converter to use locus field instead of qubits (#1382) (@burgholzer)
• ⬆️🐍 Update dependency ty to v0.0.1a31 (#1338) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 🐛 Fix dynamic QDMI Device (#1336) (@ystade)

📄 Documentation

• 📄 Update license to 2026 (#1431) (@burgholzer)
• 📝 Update templated files (#1373) ([@mqt-app[bot]](https://github.com/[mqt-app[bot]](https://github.com/apps/mqt-app)))
• 📝 Update templated files (#1324) ([@mqt-app[bot]](https://github.com/[mqt-app[bot]](https://github.com/apps/mqt-app)))

🤖 CI

• 📦🏁 Build Windows x86 wheels on windows-2025 runner for newer compiler (#1415) (@burgholzer)
• 👷 Build on macos-15/windows-2025 by default and macos-14/windows-2022 for extensive tests (#1414) (@burgholzer)
• 📦🍎 Build macOS arm64 wheels on macos-15 runner for newer compiler (#1413) (@burgholzer)
• ⚡ Improve uv build caching by removing unconditional reinstall-package and configuring dedicated cache-keys (#1412) (@burgholzer)
• 👷 Fix configuration of cpp-linter job (#1394) (@denialhaag)
• 🔥 Stop building 3.13t wheels (#1371) (@burgholzer)
• 👷 Update setup-mlir version (#1360) (@denialhaag)
• 👷 Update C++ test matrices (#1359) (@denialhaag)
• 👷 Update MLIR set-up to use self-built versions (#1294) (@denialhaag)

📦 Packaging

• 📦🏁 Build Windows x86 wheels on windows-2025 runner for newer compiler (#1415) (@burgholzer)
• 📦🍎 Build macOS arm64 wheels on macos-15 runner for newer compiler (#1413) (@burgholzer)
• 👨‍💻📦 Build spdlog as a shared library on project installs (#1411) (@burgholzer)
• ♻️ Replace pybind11 with nanobind (#1383) (@denialhaag)
• 🔥 Stop building 3.13t wheels (#1371) (@burgholzer)

🧹 Code Quality

• ⬆️🐍 Update dependency ty to v0.0.1a31 (#1338) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 🔧 Streamline DX (#1337) (@denialhaag)
• 🚨 Enable Astral's type checker ty (#1333) (@burgholzer)
• ♻️ Preserve Tuple Structure and Improve Site Type Clarity of the MQT NA Default QDMI Device (#1299) (@marcelwa)
• 🔧 Modernize DX and configuration (#1326) (@burgholzer)

⬆️ Dependencies

64 changes

• ⬆️🔒️ Lock file maintenance (#1424) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/workflows action to v1.17.10 (#1423) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook henryiii/validate-pyproject-schema-store to v2026 (#1419) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update patch updates (#1416) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook henryiii/validate-pyproject-schema-store to v2025.12.30 (#1418) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook crate-ci/typos to v1.41.0 (#1417) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 👨‍💻📦 Build spdlog as a shared library on project installs (#1411) (@burgholzer)
• ⬆️🔒️ Lock file maintenance (#1408) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update patch updates (#1405) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/workflows action to v1.17.7 (#1404) (@denialhaag)
• 🔧 update QDMI version to 1.2.1 and adjust library target names (#1401) (@burgholzer)
• ⬆️🪝 Update patch updates (#1397) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🔒️ Lock file maintenance (#1400) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook python-jsonschema/check-jsonschema to v0.36.0 (#1399) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/attest-build-provenance action to v3.1.0 (#1398) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🔒️ Lock file maintenance (#1392) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update patch updates (#1390) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/download-artifact action to v7 (#1389) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update patch updates (#1388) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🔒️ Lock file maintenance (#1377) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update astral-sh/setup-uv action to v7.1.5 (#1376) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-software/setup-mlir action to v2025.12.06 (#1374) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 📝 Update templated files (#1373) ([@mqt-app[bot]](https://github.com/[mqt-app[bot]](https://github.com/apps/mqt-app)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/templates action to v1.1.11 (#1372) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook rbubley/mirrors-prettier to v3.7.4 (#1370) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/uv-pre-commit to v0.9.16 (#1368) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🐍 Update dependency ty to v0.0.1a32 (#1364) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook pre-commit/mirrors-clang-format to v21.1.7 (#1369) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/ruff-pre-commit to v0.14.8 (#1367) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/checkout action to v6.0.1 (#1365) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/create-github-app-token action to v2.2.1 (#1366) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 👷 Update setup-mlir version (#1360) (@denialhaag)
• ⬆️🐍 Update dependency ty to v0.0.1a31 (#1338) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🔒️ Lock file maintenance (#1346) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook rbubley/mirrors-prettier to v3.7.3 (#1345) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook pre-commit/mirrors-mypy to v1.19.0 (#1343) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook rbubley/mirrors-prettier to v3.7.2 (#1342) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook emzeat/mz-lictools to v2.9.0 (#1344) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook crate-ci/typos to v1.40.0 (#1341) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/uv-pre-commit to v0.9.13 (#1340) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/ruff-pre-commit to v0.14.7 (#1339) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• 🔧 Streamline DX (#1337) (@denialhaag)
• ⬆️👨‍💻 Pin munich-quantum-software/setup-mlir action to 2f40b6e (#1334) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/workflows action to v1.17.3 (#1335) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ♻️ Move DD package evaluation module to standalone script (#1327) (@burgholzer)
• 🔧 Modernize DX and configuration (#1326) (@burgholzer)
• ⬆️🔒️ Lock file maintenance (#1325) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook scientific-python/cookie to v2025.11.21 (#1323) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/ruff-pre-commit to v0.14.6 (#1317) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook henryiii/validate-pyproject-schema-store to v2025.11.21 (#1318) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook pre-commit/mirrors-clang-format to v21.1.6 (#1319) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/checkout action to v6 (#1321) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update astral-sh/setup-uv action to v7.1.4 (#1314) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/create-github-app-token action to v2.2.0 (#1320) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update actions/checkout digest to 93cb6ef (#1312) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/workflows action to v1.17.1 (#1316) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update munich-quantum-toolkit/templates action to v1.1.10 (#1315) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🔒️ Lock file maintenance (#1308) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook astral-sh/ruff-pre-commit to v0.14.5 (#1303) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook henryiii/validate-pyproject-schema-store to v2025.11.14 (#1305) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook python-jsonschema/check-jsonschema to v0.35.0 (#1307) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook scientific-python/cookie to v2025.11.10 (#1306) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️🪝 Update pre-commit hook crate-ci/typos to v1.39.2 (#1304) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))
• ⬆️👨‍💻 Update astral-sh/setup-uv action to v7.1.3 (#1302) ([@renovate[bot]](https://github.com/[renovate[bot]](https://github.com/apps/renovate)))

Full Changelog: v3.3.3...v3.4.0