Validate that control and target qubits are disjoint

.github/scripts/ci-centos.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# Run inside the CentOS container; checkout and other Node actions run on the host.
+set -euo pipefail
+
+if [[ "$CENTOS_VERSION" == 7 ]]; then
+    vault_version=7.9.2009
+else
+    vault_version=8.5.2111
+fi
+
+# Both CentOS releases have moved from the live mirrors to the vault.
+sed -i \
+    -e 's|^mirrorlist=|#mirrorlist=|' \
+    -e "s|^#baseurl=http://mirror.centos.org/centos/\$releasever|baseurl=https://vault.centos.org/$vault_version|" \
+    -e 's|^#baseurl=http://mirror.centos.org/$contentdir/$releasever|baseurl=https://vault.centos.org/'"$vault_version"'|' \
+    /etc/yum.repos.d/CentOS-*.repo
+yum update -y
+
+if [[ "$CENTOS_VERSION" == 7 ]]; then
+    yum install -y centos-release-scl-rh
+    sed -i \
+        -e 's|^mirrorlist=|#mirrorlist=|' \
+        -e 's|^#baseurl=http://mirror.centos.org/centos/7|baseurl=https://vault.centos.org/7.9.2009|' \
+        /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
+    yum install -y https://packages.endpointdev.com/rhel/7/os/x86_64/endpoint-repo.x86_64.rpm
+    yum install -y --enablerepo=centos-sclo-rh rh-python38-python-pip rh-python38-python-devel
+    export PATH="/opt/rh/rh-python38/root/usr/bin:$PATH"
+    export LD_LIBRARY_PATH="/opt/rh/rh-python38/root/usr/lib64:${LD_LIBRARY_PATH:-}"
+else
+    yum install -y python38-devel
+fi
+
+yum install -y git gcc-c++ make
+git config --global --add safe.directory /src
+python3 -m pip install -U pip setuptools wheel
+python3 setup.py gen_reqfile --include-extras=test,azure-quantum,braket
+python3 -m pip install -r requirements.txt --prefer-binary
+if [[ "$CENTOS_VERSION" == 7 ]]; then
+    # Retain GCC 4.8 coverage with the last compatible pybind11 series.
+    python3 -m pip install 'pybind11<2.11' 'setuptools_scm[toml]>6'
+    python3 -m pip install --no-build-isolation -ve '.[azure-quantum,braket,test]'
+else
+    python3 -m pip install -ve '.[azure-quantum,braket,test]'
+fi
+echo 'backend: Agg' > matplotlibrc
+python3 -m pytest -p no:warnings

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runs-on: [ubuntu-latest, windows-latest, macos-latest]
+        runs-on: [ubuntu-latest, windows-latest, macos-15-intel]
         python:
           - 3.8
           - 3.9
@@ -41,6 +41,10 @@ jobs:
           git fetch --prune --unshallow
           git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
+      - name: Install Python runtime library (macOS)
+        if: runner.os == 'macOS'
+        run: brew install gettext
+
       - name: Setup Python ${{ matrix.python }}
         uses: actions/setup-python@v4
         with:
@@ -65,9 +69,17 @@ jobs:
         run: |
           python setup.py gen_reqfile --include-extras=test,azure-quantum,braket
 
-      - name: Prepare env
+      - name: Install build tools
         run: |
           python -m pip install -U pip setuptools wheel pybind11
+
+      # RevKit's legacy build imports pybind11 without declaring it as a build dependency.
+      - name: Build RevKit with preinstalled pybind11 (Unix)
+        if: runner.os != 'Windows'
+        run: python -m pip install --no-build-isolation 'revkit==3.0a2.dev2'
+
+      - name: Install dependencies
+        run: |
           cat requirements.txt
           python -m pip install -r requirements.txt --prefer-binary
           python -m pip install coveralls
@@ -123,9 +135,18 @@ jobs:
       PROJECTQ_CLEANUP_COMPILER_FLAGS: ${{ (matrix.clang <= 10) && 1 || 0 }}
 
     name: "Python 3 • Clang ${{ matrix.clang }} • x64"
-    container: "silkeh/clang:${{ matrix.clang }}"
+    container: "silkeh/clang:${{ matrix.clang == 11 && '11-bullseye' || matrix.clang }}"
 
     steps:
+      # Bullseye security packages have left the live mirrors; keep this legacy toolchain reproducible.
+      - name: Refresh Debian repository URLs
+        run: |
+          security_snapshot=https://snapshot.debian.org/archive/debian-security/20260801T000000Z
+          security_source="deb [check-valid-until=no] $security_snapshot bullseye-security"
+          find /etc/apt -name '*.list' -exec sed -i \
+            -e "s|^deb http://deb.debian.org/debian-security bullseye-security|$security_source|" \
+            -e 's|http://deb.debian.org/debian|https://deb.debian.org/debian|g' {} +
+
       - name: Install Git
         run: |
           apt-get update && apt-get install -y git --no-install-recommends
@@ -182,6 +203,15 @@ jobs:
     container: "gcc:${{ matrix.gcc }}"
 
     steps:
+      # Bullseye security packages have left the live mirrors; keep this legacy toolchain reproducible.
+      - name: Refresh Debian repository URLs
+        run: |
+          security_snapshot=https://snapshot.debian.org/archive/debian-security/20260801T000000Z
+          security_source="deb [check-valid-until=no] $security_snapshot bullseye-security"
+          find /etc/apt -name '*.list' -exec sed -i \
+            -e "s|^deb http://deb.debian.org/debian-security bullseye-security|$security_source|" \
+            -e 's|http://deb.debian.org/debian|https://deb.debian.org/debian|g' {} +
+
       - uses: actions/checkout@v3
 
       # Work-around for https://github.com/actions/runner-images/issues/6775
@@ -221,99 +251,26 @@ jobs:
           ./venv/bin/python3 -m pytest -p no:warnings
 
 
-  # Testing on CentOS (manylinux uses a centos base, and this is an easy way
-  # to get GCC 4.8, which is the manylinux1 compiler).
+  # Keep JavaScript actions on the host: Node 24 cannot run on CentOS 7's glibc.
+  # Build and test in the original containers to retain the older compiler coverage.
   centos:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        centos:
-          - 7  # GCC 4.8
-          - 8
-        include:
-          - centos: 7
-            python_pkg: rh-python38-python-pip rh-python38-python-devel
-            enable_repo: --enablerepo=centos-sclo-rh
-          - centos: 8
-            python_pkg: python38-devel
-
-
+        centos: [7, 8]
     name: "Python 3 • CentOS ${{ matrix.centos }} • x64"
-    container: "centos:${{ matrix.centos }}"
-
     steps:
-      - name: Enable cache for yum
-        run: echo 'keepcache=1' >> /etc/yum.conf
-
-      - name: Setup yum cache
-        uses: actions/cache@v3
-        with:
-          path: |
-            /var/cache/yum/
-            /var/cache/dnf/
-          key: ${{ runner.os }}-centos${{ matrix.centos }}-yum-${{ secrets.yum_cache }}
-
-      - name: Fix repository URLs (CentOS 8 only)
-        if: matrix.centos == 8
-        run: |
-          sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
-          sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
-
-      - name: Update YUM/DNF
-        run: yum update -y
-
-      - name: Enable extra repositories && modify PATH (CentOS 7)
-        if: matrix.centos == 7
-        run: |
-          yum install -y centos-release-scl-rh
-          yum -y install https://packages.endpointdev.com/rhel/7/os/x86_64/endpoint-repo.x86_64.rpm
-          echo '/opt/rh/rh-python38/root/usr/bin' >> $GITHUB_PATH
-
-      - name: Add Python 3 and other dependencies
-        run: yum install -y ${{ matrix.enable_repo }} ${{ matrix.python_pkg }} gcc-c++ make
-
-      - name: Install Git > 2.18
-        run: |
-          yum install -y git
-          git config --global --add safe.directory /__w/ProjectQ/ProjectQ
-
-      # Work-around for https://github.com/actions/runner-images/issues/6775
-      - name: Change Owner of Container Working Directory
-        run: chown root:root .
-
       - uses: actions/checkout@v3
-
-      - name: Get history and tags for SCM versioning to work
-        if: ${{ !env.ACT }}
-        run: |
-          git fetch --prune --unshallow
-          git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-
-      - name: Create pip cache dir
-        run: mkdir -p ~/.cache/pip
-
-      - name: Cache wheels
-        uses: actions/cache@v3
         with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-centos${{ matrix.centos }}-pip-${{ hashFiles('**/setup.cfg', '**/pyproject.toml') }}
-          restore-keys: ${{ runner.os }}-centos-pip-
+          fetch-depth: 0
 
-      - name: Install dependencies
+      - name: Build and test in CentOS
         run: |
-          python3 -m pip install -U pip setuptools wheel
-          python3 setup.py gen_reqfile --include-extras=test,azure-quantum,braket
-          cat requirements.txt
-          python3 -m pip install -r requirements.txt --prefer-binary
-
-      - name: Build and install package
-        run: python3 -m pip install -ve .[azure-quantum,braket,test]
-
-      - name: Pytest
-        run: |
-          echo 'backend: Agg' > matplotlibrc
-          python3 -m pytest -p no:warnings
+          docker run --rm \
+            -v "$GITHUB_WORKSPACE:/src" -w /src \
+            -e CENTOS_VERSION=${{ matrix.centos }} \
+            centos:${{ matrix.centos }} bash .github/scripts/ci-centos.sh
 
 
   documentation:

.github/workflows/format.yml

@@ -27,6 +27,15 @@ jobs:
       CXX: clang++
 
     steps:
+      # Bullseye security packages have left the live mirrors; keep this legacy toolchain reproducible.
+      - name: Refresh Debian repository URLs
+        run: |
+          security_snapshot=https://snapshot.debian.org/archive/debian-security/20260801T000000Z
+          security_source="deb [check-valid-until=no] $security_snapshot bullseye-security"
+          find /etc/apt -name '*.list' -exec sed -i \
+            -e "s|^deb http://deb.debian.org/debian-security bullseye-security|$security_source|" \
+            -e 's|http://deb.debian.org/debian|https://deb.debian.org/debian|g' {} +
+
       - uses: actions/checkout@v3
 
       - name: Prepare env

.pre-commit-config.yaml

@@ -76,6 +76,8 @@ repos:
     rev: v3.15.2
     hooks:
       - id: pyupgrade
+        # This pinned version predates Python 3.14 tokenizer changes.
+        language_version: python3.11
         args: [--py37-plus, --keep-mock]
 
   - repo: https://github.com/PyCQA/isort
@@ -116,6 +118,8 @@ repos:
     rev: 'v3.0.0a5'
     hooks:
       - id: pylint
+        # This pinned version predates Python 3.14 AST changes.
+        language_version: python3.11
         args: ['--score=n', '--disable=no-member']
         additional_dependencies: [pybind11>=2.6, numpy, requests, matplotlib, networkx]
 

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 -   Fixed some typos (thanks to @eltociear, @Darkdragon84)
 -   Fixed support for Python 3.12
+-   Fixed obscure IndexError in optimizer when control and target qubits overlap or are not distinct (#343)
+-   Fixed installation failure with setuptools >= 81.0.0 due to compiler dry_run attribute (#485)
 
 ### Removed
 

projectq/_setup_test.py

@@ -0,0 +1,73 @@
+#   Copyright 2017, 2021 ProjectQ-Framework (www.projectq.ch)
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+"""Regression tests for source-tree packaging commands."""
+
+import runpy
+import subprocess
+import sys
+from pathlib import Path
+from types import SimpleNamespace
+from unittest.mock import patch
+
+import pytest
+
+
+def test_requirements_fallback_preserves_marker_quotes(tmp_path):
+    """Requirement generation must work without an optional TOML parser."""
+    setup_path = Path(__file__).resolve().parents[1] / 'setup.py'
+    if not setup_path.is_file():
+        pytest.skip('Requires a source checkout')
+    script = """
+import runpy
+import sys
+import setuptools
+
+sys.modules['tomllib'] = None
+sys.modules['toml'] = None
+sys.argv = [sys.argv[1], 'gen_reqfile', '--include-extras=azure-quantum']
+runpy.run_path(sys.argv[0], run_name='__main__')
+"""
+    result = subprocess.run(
+        [sys.executable, '-c', script, str(setup_path)], cwd=tmp_path, capture_output=True, text=True, check=False
+    )
+    assert result.returncode == 0, result.stdout + result.stderr
+    requirements = (tmp_path / 'requirements.txt').read_text().splitlines()
+    assert 'azure-quantum <= 3.5.0; python_version <= "3.8"' in requirements
+    assert 'azure-quantum; python_version > "3.8"' in requirements
+
+
+@pytest.mark.parametrize('dry_run', [False, True])
+def test_clang_tidy_spawn_compatibility(dry_run):
+    """Clang-Tidy respects dry runs without relying on removed spawn arguments."""
+    from setuptools import Distribution
+
+    setup_path = Path(__file__).resolve().parents[1] / 'setup.py'
+    if not setup_path.is_file():
+        pytest.skip('Requires a source checkout')
+    with patch('setuptools.setup'):
+        namespace = runpy.run_path(str(setup_path))
+    command = namespace['ClangTidy'](Distribution())
+    command.distribution.ext_modules = []
+    command.dry_run = dry_run
+    command.warning_as_errors = True
+    build = SimpleNamespace(run=lambda: None)
+    calls = []
+
+    def spawn(args):
+        calls.append(args)
+
+    with patch.object(command, 'get_finalized_command', return_value=build):
+        with patch.dict(command.run.__globals__, spawn=spawn):
+            command.run()
+    assert calls == ([] if dry_run else [['clang-tidy', '--warnings-as-errors=*']])

projectq/backends/_azure/__init__.py

@@ -16,7 +16,7 @@
 
 try:
     from ._azure_quantum import AzureQuantumBackend
-except ImportError:  # pragma: no cover
+except (ImportError, TypeError):  # pragma: no cover
 
     class AzureQuantumBackend:
         """Dummy class."""

projectq/backends/_azure/_azure_quantum.py

@@ -39,7 +39,7 @@
     from azure.quantum import Workspace
     from azure.quantum.target import IonQ, Quantinuum, Target
     from azure.quantum.target.target_factory import TargetFactory
-except ImportError:  # pragma: no cover
+except (ImportError, TypeError):  # pragma: no cover
     raise ImportError(  # pylint: disable=raise-missing-from
         "Missing optional 'azure-quantum' dependencies. To install run: pip install projectq[azure-quantum]"
     )

projectq/backends/_azure/_azure_quantum_client_test.py

@@ -25,7 +25,7 @@
     import azure.quantum  # noqa: F401
 
     from projectq.backends._azure._azure_quantum_client import retrieve, send
-except ImportError:
+except (ImportError, TypeError):
     _has_azure_quantum = False
 
 has_azure_quantum = pytest.mark.skipif(not _has_azure_quantum, reason="azure quantum package is not installed")

projectq/backends/_azure/_azure_quantum_test.py

@@ -30,7 +30,7 @@
     import projectq.backends._azure._azure_quantum
     from projectq.backends import AzureQuantumBackend
     from projectq.backends._azure._exceptions import AzureQuantumTargetNotFoundError
-except ImportError:
+except (ImportError, TypeError):
     _has_azure_quantum = False
 
 has_azure_quantum = pytest.mark.skipif(not _has_azure_quantum, reason="azure quantum package is not installed")

projectq/backends/_azure/_utils_test.py

@@ -64,7 +64,7 @@
         to_json,
         to_qasm,
     )
-except ImportError:
+except (ImportError, TypeError):
     _has_azure_quantum = False
 
 has_azure_quantum = pytest.mark.skipif(not _has_azure_quantum, reason="azure quantum package is not installed")