code: def init_flatpak():
      
      tessdata_files = glob.glob("/app/share/locale/*/*.traineddata")
      if len(tessdata_files) <= 0:
          return os.path.exists("/app")
  
      localdir = os.path.expanduser("~/.local")
      base_data_dir = os.getenv(
          "XDG_DATA_HOME",
          os.path.join(localdir, "share")
      )
      tessdatadir = os.path.join(base_data_dir, "paperwork", "tessdata")
  
      logger.info("Assuming we are running in Flatpak."
                  " Building tessdata directory {} ...".format(tessdatadir))
      util.rm_rf(tessdatadir)
      util.mkdir_p(tessdatadir)
  
      os.symlink("/app/share/tessdata/eng.traineddata",
                 os.path.join(tessdatadir, "eng.traineddata"))
      os.symlink("/app/share/tessdata/osd.traineddata",
                 os.path.join(tessdatadir, "osd.traineddata"))
      os.symlink("/app/share/tessdata/configs",
                 os.path.join(tessdatadir, "configs"))
      os.symlink("/app/share/tessdata/tessconfigs",
                 os.path.join(tessdatadir, "tessconfigs"))
      for tessdata in tessdata_files:
          logger.info("{} found".format(tessdata))
          os.symlink(tessdata, os.path.join(tessdatadir,
                                            os.path.basename(tessdata)))
      os.environ['TESSDATA_PREFIX'] = os.path.dirname(tessdatadir)
      logger.info("Tessdata directory ready")
      return True
docs: If we are in Flatpak, we must build a tessdata/ directory using the
      .traineddata files from each locale directory