DescriptionSpack is a package manager for scientific software, with a rapidly growing open source community. Spack has over 300 contributors from academia, industry, and laboratories across the world. It is used to manage software releases for the U.S. Exascale Computing Project and the Summit supercomputer. At this BoF, Spack developers will give updates on the community and on new features such as environments and binary distribution. Sites using Spack will describe their experiences, and we will open the floor for discussion. All are invited to provide feedback, request features, and discuss future directions. Help us make installing HPC software simple!