environment is established, can choose various routes to make available and re-export
     common modules and operations, depending on platform support
 """
     environment is established, can choose various routes to make available and re-export
     common modules and operations, depending on platform support
 """
         board = "feather_huzzah"
     elif microcontroller == "samd21":
         board = "feather_m0_express"
     elif microcontroller == "pyboard":
         microcontroller = "stm32"
         board = "pyboard"
         board = "feather_huzzah"
     elif microcontroller == "samd21":
         board = "feather_m0_express"
     elif microcontroller == "pyboard":
         microcontroller = "stm32"
         board = "pyboard"