MPS has a group of languages responsible for build process. Those languages are:
jetbrains.mps.buildlanguage(build language) – an MPS counterpart of Apache Ant;
jetbrains.mps.build.property(property language) – an extension to build language designed for writing property files;
jetbrains.mps.build.packaging(packaging language) – a high-level language for building software packages, including languages made in MPS.
jetbrains.mps.build.custommps(custom mps language) – an extension to packaging language, allowing to build your own custom MPS distribution.