ci: stick to macOS 15, because the FPC package is only officially qualified up to macOS 11 and uses a package format Apple has tightened in newer releases, so it no longer installs on the macos 26 runners.

/usr/bin/sudo installer -package /Volumes/fpc-3.2.2.intelarm64-macosx/fpc-3.2.2-intelarm64-macosx.mpkg -target /
installer: Error - This package is incompatible with this version of macOS. Contact the developer for support.

Author: ansgarbecker

.github/workflows/lazarus.yaml

@@ -27,7 +27,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                operating-system: [windows-latest, ubuntu-latest, macos-latest]
+                operating-system: [windows-latest, ubuntu-latest, macos-15-arm64]
                 lazarus-versions: ["stable"]
 
         steps:
@@ -120,11 +120,11 @@ jobs:
             path: out/qt6/heidisql
 
         - name: Build HeidiSQL (macOS)
-          if: ${{ matrix.operating-system == 'macos-latest' }}
+          if: ${{ matrix.operating-system == 'macos-15-arm64' }}
           run: make build-macos
 
         - name: Upload binaries macOS
-          if: ${{ matrix.operating-system == 'macos-latest' && matrix.lazarus-versions == 'stable' }}
+          if: ${{ matrix.operating-system == 'macos-15-arm64' && matrix.lazarus-versions == 'stable' }}
           uses: actions/upload-artifact@v4
           with:
             name: ${{ matrix.operating-system }}