Commit f304c9c fixes that. Now the result is something like this:
--8<---cut here---start->8---
$ ./pre-inst-env guix build abiword -n
guix build: error: reference to invalid output 'binfds' of derivation
'/gnu/store/7lxd5yri8s4vkailk1jg5bxiqrshblj1-glib-2.42.
When a package recipe specifies as input a non-existing output of a
package, the build process fails with a rather unhelpful late error
message.
The following is the output of building a package that depends on the
"bin" output of libtool, which has since been removed.
~
[rwurmus@workstation:
