Tools to create reproducible development environments are basically everywhere these days, from Development Containers to Nix wrappers to questionable Docker hacks. However, all of these (that I have found) have a common flaw that bothers me: they all require eagerly fetching the entire environment to get anything done. This kills the premise of these environments providing any easy on-ramp for users when the first step is to download GBs of binaries. Across projects I work on, we have probab...
