Subject: bug#58841: repl ignores modules from the channel added to time-machine

From: Ludovic Courtès <[email-masked]>
Date: Sat, 05 Nov 2022 11:31:38 +0100

Hi Alexander,

"alexander barakin (aka sash-kan)" <[email-masked]> skribis:

> ## but repl does not see guix-hpc modules:
> $ guix time-machine --channels=channels.scm -- repl
> ...
> scheme@(guix-user)> (use-modules (airbus solvers))
> While compiling expression:
> no code for module (airbus solvers)
> scheme@(guix-user)> %load-path
> $1 = ("/gnu/store/dfm3k2qc0s4f8vi5il3gvrr0650p65k3-guix-module-union/share/guile/site/3.0" "/gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/share/guile/3.0" "/gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/share/guile/3.0" "/gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/share/guile/site/3.0" "/gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/share/guile/site" "/gnu/store/1jgcbdzx2ss6xv59w55g3kr3x4935dfb-guile-3.0.8/share/guile" "/home/user/.guix-profile/share/guile/site/3.0" "/home/user/.guix-profile/share/guile/site/3.0")

Currently you have to start with:

  (use-modules (gnu packages))

This will set up ‘%load-path’ so that channel modules become visible.
Let me know if it works for you!

This is a bug we should fix.

HTH,
Ludo’.