Use dib-python to run package-installs using the provided python version. Automatically detect the python version for our package-installs-squash since that runs outside the chroot. Change-Id: I926022bcf8cbcd81b051026ffd5d6477650045ad
dib=-python
Adds a symlink to /usr/local/bin/dib-python which points at either a python2 or python3 executable. This is useful for creating #! lines for scripts that are compatible with both python2 and python3.
This does not install a python if one does not exist, and instead fails.