I’ve had a lot of experience in developing on QNX over the years, and with each successive year, the call to migrate to Linux got stronger. The day to day developer experience is great, you can very easily setup a CMake toolchain and bypass the need for QNX’s Momentics, which if you’re just developing for QNX is something you will want to do. But, in my experience the driver support simply isn’t there, and that became painful. A fair few major board manufacturers treat QNX integration as a complete afterthought, and at a point you start to feel that this is directly related to RIM’s decision to shutdown source access to QNX. I’ve since left that company, but I imagine there is still a call to use Linux.