From: ludo@gnu.org (Ludovic Courtès)
Subject: Re: [bug#27922] [PATCH] gnu: python-numpy: Update to 1.12.1.
Date: Tue, 26 Sep 2017 22:08:32 +0200

> This is weird: bash-minimal is an implicit input already.  What was 
> the
> error exactly?

Oops, just setting (setenv "SHELL" "bash") is enough. Indeed, bash is 
already there.

(I've been looking in (guix build-system ...) to try to find out the 
default native inputs for the different build systems, but couldn't 
find it.  Where are they set?)

Thomas