Remove support for qt5, fix build warnings in qt 6.8.0

.github/workflows/linux.yml

@@ -9,7 +9,7 @@ env:
 
 jobs:
   deb:
-    name: deb (${{ matrix.build-type }}, Qt ${{ matrix.qt-version-major }}, ${{ matrix.image }})
+    name: deb (${{ matrix.build-type }}, Qt 6, ${{ matrix.image }})
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -18,20 +18,12 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          # Ubuntu's release cycle: https://wiki.ubuntu.com/Releases
-          - image: ubuntu-20_04
-            build-script: ubuntu_deb_entrypoint.sh
-            qt-version-major: 5
-            build-type: release
-
           - image: ubuntu-22_04
             build-script: ubuntu_deb_entrypoint.sh
-            qt-version-major: 6
             build-type: release
 
           - image: ubuntu-23_10
             build-script: ubuntu_deb_entrypoint.sh
-            qt-version-major: 6
             build-type: release
     steps:
       - name: Checkout code
@@ -75,7 +67,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           if-no-files-found: error
-          name: ${{ steps.build.outputs.deb_name }}-qt${{ matrix.qt-version-major }}-${{ steps.build.outputs.distro_name }}-${{ matrix.build-type }}
+          name: ${{ steps.build.outputs.deb_name }}-qt6-${{ steps.build.outputs.distro_name }}-${{ matrix.build-type }}
           path: ${{ steps.build.outputs.deb_path }}
 
       - name: Login to GitHub Container Registry
@@ -104,7 +96,7 @@ jobs:
           tags: ${{ env.REGISTRY }}/nuttyartist/notes:${{ matrix.image }}
 
   rpm:
-    name: rpm (${{ matrix.build-type }}, Qt ${{ matrix.qt-version-major }}, ${{ matrix.image }})
+    name: rpm (${{ matrix.build-type }}, Qt 6, ${{ matrix.image }})
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -113,13 +105,11 @@ jobs:
           # Fedora's release cycle: https://endoflife.date/fedora
           - image: fedora-38
             build-script: rpm_entrypoint.sh
-            qt-version-major: 6
             build-type: release
 
           # openSUSE's release cycle: https://endoflife.date/opensuse
           - image: opensuse-15_5
             build-script: rpm_entrypoint.sh
-            qt-version-major: 6
             build-type: release
     steps:
       - name: Checkout code
@@ -163,7 +153,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           if-no-files-found: error
-          name: ${{ steps.build.outputs.rpm_name }}-qt${{ matrix.qt-version-major }}-${{ steps.build.outputs.distro_name }}-${{ matrix.build-type }}
+          name: ${{ steps.build.outputs.rpm_name }}-qt6-${{ steps.build.outputs.distro_name }}-${{ matrix.build-type }}
           path: ${{ steps.build.outputs.rpm_path }}
 
       - name: Login to GitHub Container Registry
@@ -192,20 +182,14 @@ jobs:
           tags: ${{ env.REGISTRY }}/nuttyartist/notes:${{ matrix.image }}
 
   appimage:
-    name: AppImage (${{ matrix.build-type }}, Qt ${{ matrix.qt-version-major }}, ${{ matrix.image }})
+    name: AppImage (${{ matrix.build-type }}, Qt 6, ${{ matrix.image }})
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         include:
-          - image: appimage-qt5
-            build-script: appimage_entrypoint.sh
-            qt-version-major: 5
-            build-type: release
-
           - image: appimage-qt6
             build-script: appimage_entrypoint.sh
-            qt-version-major: 6
             build-type: release
     steps:
       - name: Checkout code
@@ -246,7 +230,6 @@ jobs:
         run: docker run --rm -v "${GITHUB_OUTPUT}:/GITHUB_OUTPUT" -v "$(pwd):/src" -t '${{ env.REGISTRY }}/nuttyartist/notes:${{ matrix.image }}' -t ${{ matrix.build-type }} ${{ github.ref_type == 'tag' && '-n' || ' ' }}
 
       - name: (FIXME) Run qmllint
-        if: endsWith(matrix.image, 'qt6')
         run: docker run --rm -v "$(pwd):/src" --entrypoint '' -t '${{ env.REGISTRY }}/nuttyartist/notes:${{ matrix.image }}' cmake --build build --target all_qmllint || true
 
       - name: Upload AppImage artifact

.github/workflows/macos.yml

@@ -9,38 +9,23 @@ jobs:
   # So it doesn't make much sense to have different build types other than 'debug' here.
   # The release dmg is built using aqtinstall instead (the job below this one).
   build-homebrew:
-    name: Build (${{ matrix.build-type }}, homebrew (qt${{ matrix.qt-version-major }}), ${{ matrix.os }})
+    name: Build (${{ matrix.build-type }}, homebrew (qt6), ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         include:
           - os: macos-13
-            qt-version-major: 5
-            build-type: debug
-
-          - os: macos-13
-            qt-version-major: 6
             build-type: debug
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
           submodules: recursive
 
-      - name: Install Qt ${{ matrix.qt-version-major }} (homebrew)
-        run: |
-          brew install ninja qt@${{ matrix.qt-version-major }} 
-
-      - name: Configure Qt ${{ matrix.qt-version-major }} (homebrew)
-        if: matrix.qt-version-major == 5
+      - name: Install Qt 6 (homebrew)
         run: |
-          brew link qt@${{ matrix.qt-version-major }}
-          cat << EOF
-          LDFLAGS="-L/usr/local/opt/qt@${{ matrix.qt-version-major }}/lib"
-          export CPPFLAGS="-I/usr/local/opt/qt@${{ matrix.qt-version-major }}/include"
-          export PATH="/usr/local/opt/qt@${{ matrix.qt-version-major }}/bin:$PATH"
-          EOF >> ~/.bashrc
+          brew install ninja qt@6 
 
       - name: Setup CLang problem matcher
         # Technically, this action only supports GCC, but it seems to work well for Clang too.
@@ -55,13 +40,10 @@ jobs:
           cmake . --warn-uninitialized --warn-unused-vars \
               -G Ninja -B build \
               -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} \
-              -DCMAKE_PREFIX_PATH="$(brew --prefix qt@${{ matrix.qt-version-major }})" \
+              -DCMAKE_PREFIX_PATH="$(brew --prefix qt@6)" \
               -DPRO_VERSION=OFF
           cmake --build build
 
-  # Build the dmg disk image using the official Qt 5 release downloaded by aqtinstall.
-  # This is also done for Linux and Windows, just to make sure we use the exact same Qt version across all three OSes.
-  #
   # NOTE: This job uses a fixed Qt version (set in the 'qt-version' key below)!
   # So, remember to keep it updated whenever a new Qt version is available on aqtinstall.
   dmg-aqtinstall:
@@ -71,10 +53,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-13
-            qt-version: 5.15.2
-            build-type: release
-
           - os: macos-13
             qt-version: 6.5.2
             build-type: release
@@ -98,11 +76,7 @@ jobs:
           then
               version="${version}+g${GITHUB_SHA::7}"
           fi
-          arches='x86_64'
-          if [[ '${{ matrix.qt-version }}' == 6.* ]]
-          then
-              arches+='-arm64'
-          fi
+          arches='x86_64-arm64'
           artifact_name="Notes_${version}-Qt${{ matrix.qt-version }}-${arches}"
           if [ '${{ matrix.build-type }}' == 'debug' ]
           then
@@ -126,23 +100,20 @@ jobs:
 
       - name: Build (${{ matrix.build-type }})
         env:
-          # Only commercial Qt 5 supports targeting Apple Silicon at the moment:
-          # https://www.qt.io/blog/qt-on-apple-silicon
-          TARGET_ARCH: ${{ startsWith(matrix.qt-version, '6.') && 'x86_64;arm64' || 'x86_64' }}
+          TARGET_ARCH: x86_64;arm64
           VERBOSE: 1
         run: |
           export CMAKE_BUILD_PARALLEL_LEVEL=$(sysctl -n hw.logicalcpu)
           cmake . --warn-uninitialized --warn-unused-vars \
               -B build -G Ninja \
-              -DCMAKE_OSX_DEPLOYMENT_TARGET=${{ startsWith(matrix.qt-version, '6.') && '11.0' || '10.15' }} \
+              -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 \
               -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} \
               -DGIT_REVISION=${{ github.ref_type != 'tag' && 'ON' || 'OFF' }} \
-              -DCMAKE_OSX_ARCHITECTURES="${{ env.TARGET_ARCH }}" \
+              -DCMAKE_OSX_ARCHITECTURES='x86_64;arm64' \
               -DPRO_VERSION=OFF
           cmake --build build
 
       - name: (FIXME) Run qmllint
-        if: startsWith(matrix.qt-version, '6.')
         run: |
           cmake --build build --target all_qmllint || true
 
@@ -158,17 +129,6 @@ jobs:
           mv Notes.app 'Notes Better.app'
           macdeployqt 'Notes Better.app' -qmldir=../src/qml -appstore-compliant
 
-      - name: Remove unnecessary Qt plugins and libraries
-        run: |
-          set -x
-          set -e
-          cd 'build/Notes Better.app'
-          if [[ '${{ matrix.qt-version }}' == 5.* ]]
-          then
-              # The bearer plugin has caused problems for us in the past. Plus, it was removed altogether in Qt 6.
-              rm -rv Contents/PlugIns/bearer
-          fi
-
       - name: Import signing certificate
         if: github.repository == 'nuttyartist/notes' && github.event_name != 'pull_request'
         run: |