[Bio-packaging] Packaging

[Ricardo Wurmus]

> BTW Nix (on which Guix is based) actually allows building and
> installing software in $HOME without root privileges.

This also works with Guix, but then the daemon cannot build software in
isolated chroots.  It's something I'd avoid in production.  Guix works
best when the daemon is run as root.  Note that for the Guix command
line tools (e.g. to install or remove packages) no root privileges are
required.