Hello,

Alex Vong <[email protected]> skribis:

> alexvong1995@debian:~/scm/guix$ ./pre-inst-env guix package -u
> substitute: Backtrace:
> substitute:            1 (primitive-load 
> "/home/alexvong1995/scm/guix/scripts/gu…")
> substitute: In guix/ui.scm:
> substitute:   1352:12  0 (run-guix-command _ . _)
> substitute: 
> substitute: guix/ui.scm:1352:12: In procedure run-guix-command:
> substitute: guix/ui.scm:1352:12: Wrong type to apply: #<unknown-type (0x24f . 
> 0x7f92ef1ebe08) @ 0x7f92ef7a1318>

This message is likely because Guix on the daemon side ends up loading
Guile-SSH-for-Guile-2.0 whereas it is running Guile 2.2.

Could you check if that is the case?

HTH!

Ludo’.

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