Hey, I've just read news about [[http://developer.mbed.org/blog/entry/Announcing-our-plans-for-mbed-v30/|Announcing our plans for mbed v3.0 ]] and Command Line Tools. I want to propose you to merge our efforts in this way. I'm working on cross-platform source code builder named as [[http://platformio.ikravets.com|PlatformIO]]. It allows people to install already pre-built tool chains/frameworks for different OS without any requirements (only Python Interpreter). The building logic is based on great [[http://www.scons.org|SCons]] project. [[https://github.com/ivankravets/platformio/tree/develop/platformio/builder/scripts|Here is a few examples]] how it looks for popular embedded platforms, like ATmel AVR, TI MSP430 & ARM Tiva. What is more, //PlatformIO// can manage your external libraries. It proposes own [[http://docs.platformio.ikravets.com/en/latest/librarymanager/config.html|library.json]] specification. Also, [[http://platformio.ikravets.com/#!/lib|PlatformIO Library Manager]] makes it extremely simple to find, install and keep libraries up-to-date. What do you think about it?