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.