Fully self contained builds of complex C/C++/Python packages with Spack

The Spack package manager has excellent in-built capabilities for building on system disconnected form the internet. As part of this, this includes the capability to collect all of the required source code to build any package. For example the collected source code for building Tensorflow (without MPI or CUDA) amounts to around 2.4GB after compression. In essence all that of the functionality is…