Playing devil's advocate: sometimes your build is non-reproducible, annoying to build, or both (for instance, needing a proprietary tool which can only run on a

Playing devil's advocate: sometimes your build is non-reproducible, annoying to build, or both (for instance, needing a proprietary tool which can only run on a particular developer's laptop because the license is tied to that particular hardware, and which crashes half of the time for no particular reason). Keeping the build artifacts in the repository means you can reproducibly obtain that exact artifact, even years into the future.