This page explains how to use Energia for the Launchpad MSP-EXP430G2 board.
Installation
Install the energiaAUR package.
Configuration
Create a udev rule to allow regular users access to the device:
/etc/udev/rules.d/10-launchpad.rules
ACTION!="remove", SUBSYSTEM=="usb", ATTR{idVendor}=="0451", ATTR{idProduct}=="f432", MODE="0660", TAG+="uaccess"
Add yourself to the lock and uucp user groups.
Plug your launchpad and start energia.