idea: "guix cargo", "guix npm" etc

[Andy Wingo <wingo@igalia.com>]

A little idea inspired by Eelco's talk at the Guix miniconference.

The "problem" is that users are often more used to their
language-specific package manager than Guix.  They find "cargo install
foo" to be convenient.  However this rarely results in a reproducible
build in the sense of Guix or Nix.

So, an idea: why not offer a subset of the command-line interface of
"cargo" et al?  Specifically the commands to install a package.  The
"guix cargo" command would translate "cargo install" instantiations to
Guix commands.  If the package is in Guix, then it installs directly.
If not, maybe it runs the importer and prepares a package submission to
Guix?

Just an idea!  I don't plan on working on this in the short term.

Andy