Cannot install a package from a `nar' archive without network access.

Hello,

I cannot get Guix to install a package from a `nar' archive without network access.

Here are the steps to reproduce the unexpected behaviour :

These commands :

?????

? guix install hello

? guix archive --export -r hello > hello.nar

? guix remove hello

? guix package --delete-generations

? guix gc

? guix archive --import < ./hello.nar

? guix package -i /gnu/store/81bdcd5x4v50i28h98bfkvvkx9cky63w-hello-2.10

?????

give :

?????

? Le paquet suivant sera installé :

? hello 2.10

?

? La dérivation suivante sera compilée :

? /gnu/store/b3zshi8adni3xy2zn3cngayh5dhfvvrs-profile.drv

?

? 32,0 Mo seront téléchargés

? guix substitute: error: erreur lors de la consultation du nom d'h\u00f4te : Nom ou service inconnu

? la substitution de /gnu/store/gzh4pjhzhbfbn4kdiba3hl8b264y19q4-module-import-compiled a échoué

? guix package: erreur : some substitutes for the outputs of derivation

? `/gnu/store/6i7mhz4vxl4g19q7cabc0rvmpw5dijzx-module-import-compiled.drv' failed

? (usually happens due to networking issues); try `--fallback' to build derivation from

? source

?????