Won't run on openSUSE Tumbleweed. Is Qt6 support planned?

[Tux]

Works fine on openSUSE Leap 15.4 and 15.5, but fails on TumbleWeed:

QFontDatabase: Must construct a QGuiApplication before accessing QFontDatabase
Abort (core dumped)

When cloning and building from git

ghostwriter-git/build 513 🐧 cmake ..
CMake Warning at CMakeLists.txt:59 (find_package):
  By not providing "FindKF5DocTools.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "KF5DocTools", but CMake did not find one.

  Could not find a package configuration file provided by "KF5DocTools"
  (requested version 5.90) with any of the following names:

    KF5DocToolsConfig.cmake
    kf5doctools-config.cmake

  Add the installation prefix of "KF5DocTools" to CMAKE_PREFIX_PATH or set
  "KF5DocTools_DIR" to a directory containing one of the above files.  If
  "KF5DocTools" provides a separate development package or SDK, be sure it
  has been installed.


-- Using Font Awesome Free
-- The following OPTIONAL packages have been found:

 * Qt5Core

-- The following REQUIRED packages have been found:

 * ECM (required version >= 5.90)
 * Qt5LinguistTools
 * Qt5Gui
 * Qt5Widgets
 * Qt5 (required version >= 5.15.2)

-- The following OPTIONAL packages have not been found:

 * KF5DocTools (required version >= 5.90), Tools to generate documentation

CMake Deprecation Warning at /usr/share/cmake/Modules/GenerateExportHeader.cmake:427 (message):
  The add_compiler_export_flags function is obsolete.  Use the
  CXX_VISIBILITY_PRESET and VISIBILITY_INLINES_HIDDEN target properties
  instead.
Call Stack (most recent call first):
  3rdparty/cmark-gfm/extensions/CMakeLists.txt:31 (add_compiler_export_flags)


-- Could NOT find KF5Sonnet (missing: KF5Sonnet_DIR)
-- Could NOT find KF5Sonnet: found neither KF5SonnetConfig.cmake nor kf5sonnet-config.cmake
-- Could NOT find KF5CoreAddons (missing: KF5CoreAddons_DIR)
-- Could NOT find KF5CoreAddons: found neither KF5CoreAddonsConfig.cmake nor kf5coreaddons-config.cmake
-- Could NOT find KF5XmlGui (missing: KF5XmlGui_DIR)
-- Could NOT find KF5XmlGui: found neither KF5XmlGuiConfig.cmake nor kf5xmlgui-config.cmake
-- Could NOT find KF5ConfigWidgets (missing: KF5ConfigWidgets_DIR)
-- Could NOT find KF5ConfigWidgets: found neither KF5ConfigWidgetsConfig.cmake nor kf5configwidgets-config.cmake
CMake Error at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find KF5 (missing: Sonnet CoreAddons XmlGui ConfigWidgets) (found
  suitable version "5.115.0", minimum required is "5.90")
Call Stack (most recent call first):
  /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/ECM/find-modules/FindKF5.cmake:93 (find_package_handle_standard_args)
  src/CMakeLists.txt:97 (find_package)


-- Configuring incomplete, errors occurred!

I did not see a branch with qt6 in its name.

A bit of a shame as this might be the best OSS alternative to typora I've seen so far