Separating test inputs?

[Felix Lechner]

Hi,

A better test infrastructure in Guix would probably be good, but is not
ready yet. Would it make sense, however, to split out those inputs only
needed for testing?

Such a step would probably make bootstrapping new architectures a lot
easier. It would also reduce the dependency graph in Guix, since tests
are not needed to either build or use a package.

In Debian, test prerequisites are annotated awkwardly with <!nocheck> in
the build prerequisites. (I think Guix calls them native-inputs.) You
can see some of Debian's funny notations here [1] and here. [2]

This is a proposal for 'test-inputs'. Any thoughts?

Kind regards
Felix

[1] 
https://tracker.debian.org/media/packages/libm/libmouse-perl/control-2.5.10-1
[2] https://tracker.debian.org/media/packages/l/lintian/control-2.116.3