A system like Guix will have at least a magnitude more private manifests. Form personal shell scripts and environment configs, over team development environmen

A system like Guix will have at least a magnitude more private manifests. Form personal shell scripts and environment configs, over team development environments to custom software. Non of that can be upstreamed. Plus the proprietary software, which also can't be upstreamed. I concur that not having a stable format is a potentially problematic design decision, not a benefit.