The common software provides and integrates also class libraries for astronomical calculation routines and data reduction (like SLA, TPOINT, AIPS++)[RD01 - 5.3.3 Astrometry].
They are off-the-shelf packages only integrated and distributed within ACS. Their installation is optional and depends on the needs of a user for the specific package.
Depending on the specific licensing agreements, such libraries will be publicly available with each ACS installation package or only for specific ALMA internal distributions, where the library is actually used according to the agreed license.