How to use the apio.util.get_systype function in apio

def cli(ctx, lsftdi, lsusb, lsserial, info):
    """System tools.\n
       Install with `apio install system`"""

    exit_code = 0

    if lsftdi:
        exit_code = System().lsftdi()
    elif lsusb:
        exit_code = System().lsusb()
    elif lsserial:
        exit_code = System().lsserial()
    elif info:
        click.secho('Platform: ', nl=False)
        click.secho(get_systype(), fg='yellow')
    else:
        click.secho(ctx.get_help())

    ctx.exit(exit_code)

def check_platform(self, board_data):
        if 'platform' not in board_data:
            return

        platform = board_data.get('platform')
        current_platform = util.get_systype()
        if platform != current_platform:
            # Incorrect platform
            if platform == 'linux_armv7l':
                raise Exception(
                    'incorrect platform: RPI2 or RPI3 required')
            else:
                raise Exception(
                    'incorrect platform {0}'.format(platform))

def _get_platform(self):
        return util.get_systype()

# -- This file is part of the Apio project
# -- (C) 2016-2018 FPGAwars
# -- Author Jesús Arroyo
# -- Licence GPLv2

import os
import click
import subprocess

from os.path import isfile

from apio import util
from apio.profile import Profile
from apio.resources import Resources

platform = util.get_systype()

FTDI_INSTALL_DRIVER_INSTRUCTIONS = """
   FTDI driver installation:
   Usage instructions

      1. Connect the FTDI FPGA board
      2. Select (Interface 0)
      3. Replace driver by "libusbK"
      4. Reconnect the board
      5. Check `apio system --lsftdi`
"""

FTDI_UNINSTALL_DRIVER_INSTRUCTIONS = """
   FTDI driver uninstallation:
   Usage instructions

vid = board_data.get('usb').get('vid')
                programmer = programmer.replace('${VID}', vid)

            # Replace USB product id
            if '${PID}' in programmer:
                pid = board_data.get('usb').get('pid')
                programmer = programmer.replace('${PID}', pid)

            # Replace FTDI index
            if '${FTDI_ID}' in programmer:
                self.check_usb(board, board_data)
                ftdi_id = self.get_ftdi_id(board, board_data, ext_ftdi_id)
                programmer = programmer.replace('${FTDI_ID}', ftdi_id)

            # TinyFPGA BX board is not detected in MacOS HighSierra
            if 'tinyprog' in board_data and 'darwin' in util.get_systype():
                # In this case the serial check is ignored
                return 'tinyprog --libusb --program'

            # Replace Serial port
            if '${SERIAL_PORT}' in programmer:
                self.check_usb(board, board_data)
                device = self.get_serial_port(board, board_data, ext_serial)
                programmer = programmer.replace('${SERIAL_PORT}', device)

        return programmer