ci: Use Qt macOS 10.13+ package for macOS build and test jobs

It is a universal binary for both `x86_64` and `arm64` architectures.

.gitlab/ci/download_qt.cmake

@@ -4,31 +4,6 @@ cmake_minimum_required(VERSION 3.12)
 set(qt_version_major "5")
 set(qt_version_minor "15")
 set(qt_version_patch "1")
-# This URL is only visible inside of Kitware's network. Please use your own Qt
-# Account to obtain these files.
-if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "package")
-  set(qt_url_root "https://cmake.org/files/dependencies")
-else ()
-  set(qt_url_root "https://paraview.org/files/dependencies/internal/qt")
-endif ()
-
-# Determine the ABI to fetch for Qt.
-if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2015")
-  set(qt_platform "windows_x86")
-  set(msvc_year "2015")
-  set(qt_abi "win64_msvc${msvc_year}_64")
-elseif ("$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2017" OR
-        "$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2019")
-  set(qt_platform "windows_x86")
-  set(msvc_year "2019")
-  set(qt_abi "win64_msvc${msvc_year}_64")
-elseif ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos")
-  set(qt_platform "mac_x64")
-  set(qt_abi "clang_64")
-else ()
-  message(FATAL_ERROR
-    "Unknown ABI to use for Qt")
-endif ()
 
 # Combined version variables.
 set(qt_version "${qt_version_major}.${qt_version_minor}.${qt_version_patch}")
@@ -36,7 +11,21 @@ set(qt_version_nodot "${qt_version_major}${qt_version_minor}${qt_version_patch}"
 
 # Files needed to download.
 set(qt_files)
-if (qt_platform STREQUAL "windows_x86")
+if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "windows")
+  # Determine the ABI to fetch for Qt.
+  if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2015")
+    set(qt_platform "windows_x86")
+    set(msvc_year "2015")
+    set(qt_abi "win64_msvc${msvc_year}_64")
+  elseif ("$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2017" OR
+          "$ENV{CMAKE_CONFIGURATION}" MATCHES "vs2019")
+    set(qt_platform "windows_x86")
+    set(msvc_year "2019")
+    set(qt_abi "win64_msvc${msvc_year}_64")
+  else ()
+    message(FATAL_ERROR "Unknown ABI to use for Qt")
+  endif ()
+
   set(qt_build_stamp "202009071110")
 
   set(qt_file_name_prefix "${qt_version}-0-${qt_build_stamp}")
@@ -47,29 +36,23 @@ if (qt_platform STREQUAL "windows_x86")
   endforeach ()
 
   set(qt_subdir "${qt_version}/msvc${msvc_year}_64")
-elseif (qt_platform STREQUAL "mac_x64")
-  if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos_package")
-    list(APPEND qt_files
-      "qt-5.15.2-macosx10.13-x86_64-arm64.tar.xz")
-    set(qt_subdir "qt-5.15.2-macosx10.13-x86_64-arm64")
-  elseif ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos10.10_package")
-    list(APPEND qt_files
-      "qt-5.9.9-macosx10.10-x86_64-arm64.tar.xz")
+
+  # This URL is only visible inside of Kitware's network.
+  # Please use your own Qt Account to obtain these files.
+  set(qt_url_root "https://paraview.org/files/dependencies/internal/qt")
+  set(qt_url_path "${qt_platform}/desktop/qt5_${qt_version_nodot}/qt.qt5.${qt_version_nodot}.${qt_abi}")
+elseif ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos")
+  if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos10.10_package")
+    list(APPEND qt_files "qt-5.9.9-macosx10.10-x86_64-arm64.tar.xz")
     set(qt_subdir "qt-5.9.9-macosx10.10-x86_64-arm64")
   else ()
-    set(qt_build_stamp "202009071110")
-    set(qt_file_name_prefix "${qt_version}-0-${qt_build_stamp}")
-
-    foreach (qt_component IN ITEMS qtbase)
-      list(APPEND qt_files
-        "${qt_file_name_prefix}${qt_component}-MacOS-MacOS_10_13-Clang-MacOS-MacOS_10_13-X86_64.7z")
-    endforeach ()
-
-    set(qt_subdir "${qt_version}/clang_64")
-  endif ()
-else ()
-  message(FATAL_ERROR
-    "Unknown files for ${qt_platform}")
+    list(APPEND qt_files "qt-5.15.2-macosx10.13-x86_64-arm64.tar.xz")
+    set(qt_subdir "qt-5.15.2-macosx10.13-x86_64-arm64")
+  endif()
+  set(qt_url_root "https://cmake.org/files/dependencies")
+  set(qt_url_path "")
+else()
+  message(FATAL_ERROR "Unknown OS to use for Qt")
 endif ()
 
 # Verify that we know what directory will be extracted.
@@ -79,11 +62,6 @@ if (NOT qt_subdir)
 endif ()
 
 # Build up the path to the file to download.
-if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "package")
-  set(qt_url_path "")
-else ()
-  set(qt_url_path "${qt_platform}/desktop/qt5_${qt_version_nodot}/qt.qt5.${qt_version_nodot}.${qt_abi}")
-endif ()
 set(qt_url_prefix "${qt_url_root}/${qt_url_path}")
 
 # Include the file containing the hashes of the files that matter.