From https://buckbuild.com/ https://buckbuild.com/ "Buck is a build system developed and used by Facebook. It encourages the creation of small, reusable modules

From https://buckbuild.com/ https://buckbuild.com/ "Buck is a build system developed and used by Facebook. It encourages the creation of small, reusable modules consisting of code and resources, and supports a variety of languages on many platforms. "