Besides the general hassle involved, supporting multiple Maya versions and multiple projects at the same time is a nightmare for doing good testing and QA. With so many different configurations it becomes increasingly easy for something to slip through the cracks. You might have a bit of Python 2.7 syntax which you wrote in Maya 2014 sneaking into a tool used in Maya 2011. You might have tools that rely on an external dll that is correctly set up in your Maya 2011 tools but not in the outsourcer version of your 2012 setup.... The possibilities for shooting yourself in the foot are endless.
So, in an effort to clean this up, I've cooked up a simple module designed to create and run instances of MayaPy.exe with precise control over the paths and environment variables. You can use it to run tests or automatic processes in isolation, knowing that only the paths and settings you're using will be live.
The actual code is not super complex - it's up on gitHub, as usual free-to-use under the MIT license. Comments / questions/ feedback and especially bug fixes all welcome! Code also here after the jump
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