Update to checkout v4.

.github/workflows/build-without-conan.yml

@@ -14,7 +14,7 @@ jobs:
       INSTALL_DIR: "/home/runner/local"
       TMP_DIR: "/home/runner/tmp"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Create directories
       run: |
         mkdir ${INSTALL_DIR}

.github/workflows/build_and_test.yml

@@ -28,7 +28,7 @@ jobs:
       tket_ver: ${{ steps.tket_ver.outputs.tket_ver }}
       tket_package_exists: ${{ steps.tket_package_exists.outputs.tket_package_exists }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v4
       with:
         python-version: '3.11'
@@ -66,7 +66,7 @@ jobs:
     if: needs.check_changes.outputs.tket_changed == 'true' || needs.check_changes.outputs.doxyfile_changed == 'true'
     runs-on: 'ubuntu-22.04'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check doxygen
         run: |
           sudo apt install -y doxygen graphviz
@@ -78,7 +78,7 @@ jobs:
     if: needs.check_changes.outputs.tket_changed == 'true'
     runs-on: 'macos-12'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Check C++ code formatting
         run: |
           brew update
@@ -94,7 +94,7 @@ jobs:
         os: ['ubuntu-22.04', 'macos-12']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: apt update
       if: matrix.os == 'ubuntu-22.04'
       run: sudo apt update
@@ -144,7 +144,7 @@ jobs:
         os: ['windows-2022']
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install conan
         uses: turtlebrowser/[email protected]
         with:
@@ -215,7 +215,7 @@ jobs:
     needs: check_changes
     if: needs.check_changes.outputs.tket_changed == 'true' && github.repository == 'CQCL/tket'
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: Set up conan
@@ -268,7 +268,7 @@ jobs:
     if: needs.check_changes.outputs.tket_changed == 'true' || needs.check_changes.outputs.pytket_changed == 'true'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: Set up conan
@@ -363,7 +363,7 @@ jobs:
     if: needs.check_changes.outputs.tket_changed == 'true' || needs.check_changes.outputs.pytket_changed == 'true'
     runs-on: macos-12
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Select Python 3.10
       # otherwise turtlebrowser/[email protected] fails on macos-12
       uses: actions/setup-python@v4
@@ -452,7 +452,7 @@ jobs:
     if: needs.check_changes.outputs.tket_changed == 'true' || needs.check_changes.outputs.pytket_changed == 'true'
     runs-on: windows-2022
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: Set up conan
@@ -524,7 +524,7 @@ jobs:
     needs: check_changes
     if: (needs.check_changes.outputs.tket_changed == 'true' || needs.check_changes.outputs.pytket_changed == 'true') && github.repository == 'CQCL/tket'
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: Set up conan
@@ -620,7 +620,7 @@ jobs:
     if: github.event_name == 'push' && github.ref == 'refs/heads/develop'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Download artefact
@@ -648,7 +648,7 @@ jobs:
     if: github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Download artefact
       uses: actions/download-artifact@v3
       with:

.github/workflows/build_libs.yml

@@ -19,7 +19,7 @@ jobs:
       tkwsm: ${{ steps.filter.outputs.tkwsm }}
       libs: ${{ steps.filter.outputs.changes }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dorny/[email protected]
       id: filter
       with:
@@ -46,7 +46,7 @@ jobs:
         build_type: ['Release', 'Debug']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: normalize line endings in conanfile and src directory
       if: matrix.os == 'windows-2022'
       # This is necessary to ensure consistent revisions across platforms.
@@ -93,7 +93,7 @@ jobs:
         lib: ${{ fromJson(needs.changes.outputs.libs) }}
         build_type: ['Release', 'Debug']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: create profile
@@ -125,7 +125,7 @@ jobs:
     env:
       UPLOAD_PACKAGE: "NO"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: set up container
       run: |
         docker create --name linux_build -i -v /:/host quay.io/pypa/manylinux2014_x86_64:latest /bin/bash

.github/workflows/coverage.yml

@@ -23,7 +23,7 @@ jobs:
     outputs:
       tket: ${{ steps.filter.outputs.tket }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dorny/[email protected]
       id: filter
       with:
@@ -39,7 +39,7 @@ jobs:
     if: needs.changes.outputs.tket == 'true' || github.event_name == 'schedule'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install conan
       uses: turtlebrowser/[email protected]
     - name: create profile
@@ -90,7 +90,7 @@ jobs:
     if: ((github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch') && needs.changes.outputs.tket == 'true') || github.event_name == 'schedule'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Download artefact
       uses: actions/download-artifact@v3
       with:
@@ -114,7 +114,7 @@ jobs:
     if: github.event_name == 'push' && needs.changes.outputs.tket == 'true'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Download artefact
@@ -143,7 +143,7 @@ jobs:
     if: github.event_name == 'schedule'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Download artefact

.github/workflows/docs.yml

@@ -11,7 +11,7 @@ jobs:
   build_docs:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Doxygen
       run: sudo apt update && sudo apt install -y doxygen graphviz
     - name: Build Doxygen docs
@@ -26,7 +26,7 @@ jobs:
     concurrency: gh_pages
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Download artefact

.github/workflows/lint.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.x
       uses: actions/setup-python@v4
       with:

.github/workflows/packages.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Select Python 3.10
       # otherwise turtlebrowser/[email protected] fails on macos-12
@@ -49,7 +49,7 @@ jobs:
     runs-on: ['self-hosted', 'macOS', 'ARM64']
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install conan
       uses: turtlebrowser/[email protected]
@@ -74,7 +74,7 @@ jobs:
     runs-on: 'ubuntu-22.04'
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up container
       run: |
@@ -91,7 +91,7 @@ jobs:
     runs-on: ['self-hosted', 'macOS', 'ARM64']
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up container
       run: |

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         python3-version: ['9', '10', '11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -42,7 +42,7 @@ jobs:
       matrix:
         python3-version: ['9', '10', '11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -78,7 +78,7 @@ jobs:
       matrix:
         python-version: ['3.9', '3.10', '3.11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -116,7 +116,7 @@ jobs:
       matrix:
         python-version: ['3.9', '3.10', '3.11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -158,7 +158,7 @@ jobs:
       matrix:
         python-version: ['3.9', '3.10', '3.11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
@@ -205,7 +205,7 @@ jobs:
           path: wheelhouse/
       - name: Install wheel
         run: pip install wheelhouse/pytket-*.whl
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           path: tket
       - name: Setup tests
@@ -223,7 +223,7 @@ jobs:
       matrix:
         python3-version: ['9', '10', '11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         path: tket
     - name: Download wheel
@@ -268,7 +268,7 @@ jobs:
       with:
         name: MacOS_${{ matrix.python-version }}_wheel
         path: wheelhouse/
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         path: tket
     - name: Install wheel
@@ -288,7 +288,7 @@ jobs:
       matrix:
         python-version: ['3.9', '3.10', '3.11']
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         path: tket
     - name: Download wheels
@@ -330,7 +330,7 @@ jobs:
     - name: Install wheel
       shell: bash
       run: for i in wheelhouse/pytket-*.whl ; do pip install $i ; done
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
           path: tket
     - name: Run tests
@@ -367,7 +367,7 @@ jobs:
     if: github.event_name == 'release'
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
       uses: actions/setup-python@v4
       with:
@@ -399,7 +399,7 @@ jobs:
     if: github.event_name == 'release' && github.event.release.prerelease != true
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Download artefact