Hello.
The procedure `map-derivation` from `(guix derivations)` seems broken.
Evaluating this yields an error, it probably shouldn't:
--8<---------------cut here---------------start------------->8---
scheme@(guix-user)> (use-modules (guix)
(guix derivations)
(gnu packages)
(gnu packages perl)
(gnu packages games))
scheme@(guix-user)> (with-store store
(let ((cowsay-drv (package-derivation store cowsay))
(perl-drv (package-derivation store perl))
(perl-5.6-drv (package-derivation store perl-5.6)))
(map-derivation store
cowsay-drv
`((,perl-drv . ,perl-5.6-drv)))))
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
In procedure fport_read: Is a directory
Entering a new prompt. Type `,bt' for a backtrace or `,q' to continue.
scheme@(guix-user) [1]>
--8<---------------cut here---------------end--------------->8---
If you inspect the `cowsay` derivation, you will see that the mapping
should be possible since it contains the `perl` derivation.
Does anyone have an idea on what could be the issue or how to investigate
further?
Thanks,
Sergio.
