The lead of the Android Open Source Project (AOSP) has called it quits after months of wrangling to get the proper drivers open sourced by Qualcomm to get the Nexus 7 bootable on pure AOSP builds. It is not the first time Qualcomm has not released open source drivers for their Adreno chips. Jean-Baptiste Quéru was asked back in November of 2012 why there was a lack of AOSP and factory images for the Nexus 4 when Qualcomm initially refused to release their open source drivers for the Adreno 320 that the Qualcomm Snapdragon S4 Pro had. After months of frustrations and being blamed for the lack of driver releases, the leader officially stepped down from his post.
For those who are unfamiliar with the AOSP, they are the open source branch of the Android ecosystem. AOSP builds are compiled with open source drivers and without manufacturers releasing open source drivers, people cannot build pure AOSP builds. AOSP is critical for the Android development community as it provides the pure Android builds which proprietary builds will eventually be based on. The modding community relies on it as they can take the source code and modify them for their own builds.
A side-effect of this is that the new Nexus 7 (2013) model may never see a factory image released by Google. These factory images are stock images that are used by people to perform a full reinstallation of their Nexus device in the event that their modding endeavours go horribly wrong or they just want a completely fresh start on their devices.
Qualcomm's hesitation in releasing the much needed Adreno GPU drivers and having Jean-Baptiste Quéru stepping down are major blows to the Android open source community.