Hi,

Christopher Baines <mail@cbaines.net> skribis:

> When attempting to guix pull using the aarch64-linux system, I'm seeing
> some issues with derivation outputs. I tried with a newer and older
> commit, and the result is the same.
>
>
> → guix pull --commit=27b09f3ab11a30821a5ce0b071aac1bc6156497d --system=aarch64-linux --profile=/tmp/testprofile2
> Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
> Building from this channel:
>   guix      https://git.savannah.gnu.org/git/guix.git	27b09f3
> Computing Guix derivation for 'aarch64-linux'... -
> guix pull: error: derivation `/gnu/store/800ky8qa4az7yx36gsg9ak6bih3530qm-glibc-2.29.drv' has incorrect output `/gnu/store/8v34v81q86klja9rihaixkypcml5ad5j-glibc-2.29-debug', should be `/gnu/store/w3iq60ias1qlrjigbj75ssda09hwg21i-glibc-2.29-debug'

The problem here is that we’re building the trampoline,
“compute-guix-derivation”, for AArch64.  It builds if substitutes are
available (likely) and fails to build otherwise.  And then we try to
execute it locally, and since your machine is not AArch64, it fails.

The first patch attached does what I thought was all it would take to
fix it.  But then I realized that the second patch is needed so that
‘make-config.scm’ uses a Guile for the right system, same for
“module-import.drv” and so on.

Together, these two patches solve the problem (not retroactively
though), but we need to check the implications of changing the default
value of #:guile-for-build.

Thanks,
Ludo’.