Missing dependency in the samd21_xpro configuration

[benesjan]

Hi, I tried to initialize project using the following command: "platformio init --ide clion --board samd21_xpro".
It downloaded some dependencies but failed on the following error: IOError: [Errno 2] No such file or directory: '/home/honza/.platformio/packages/framework-mbed/variant/SAMD21J18A/SAMD21J18A.eix':
Basically the whole /home/honza/.platformio/packages/framework-mbed/ directory was missing.
The initialization failed, however the platformio.ini file was generated.
Solution:
I added teensy31, which is also dependant upon mbed framework, to the platformio.ini file. Then I ran the "platformio run" command. It downloaded the framework and now it works fine.

Content of modified platformio.ini file:
[env:samd21_xpro]
platform = atmelsam
framework = mbed
board = samd21_xpro

[env:teensy31]
platform = teensy
framework = mbed
board = teensy31

Thanks