bug#52559: guix pull fails with `Unknown command: nix fish: nix show-derivation "~/.fr-sqOEpp/....-module-import-compiled.drv"

[Grigory Shepelev]

guix pull fails for a 4 days at least with the same error:

fish: Unknown command: nix
fish:

nix show-derivation "/home/shegeley/.cache/.fr-sqOEpp/273vsd5gv1ch73ayih504s5wcxvysq-module-import-compiled.drv"

I had nix-service-type enabled and I had this problem. Then I disabled it (with remove-service...), reconfigured the system. Same error message and problem. Cleaned the thrash (guix gc) and tried to pull without substitutes. Same result each time.

shegeley@zone51 ~ (master) [127]> guix pull
Updating channel 'nonguix' from Git repository at 'https://gitlab.com/nonguix/nonguix'...
Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
Authenticating channel 'guix', commits 9edb3f6 to 5e59153 (4 new commits)...
Building from these channels:
  guix      https://git.savannah.gnu.org/git/guix.git 5e59153
  nonguix   https://gitlab.com/nonguix/nonguix 21d41c8
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

... [author comment]

building /gnu/store/6r273vsd5gv1ch73ayih504s5wcxvysq-module-import-compiled.drv...
|builder for `/gnu/store/6r273vsd5gv1ch73ayih504s5wcxvysq-module-import-compiled.drv' failed with exit code 1
build of /gnu/store/6r273vsd5gv1ch73ayih504s5wcxvysq-module-import-compiled.drv failed
View build log at '/var/log/guix/drvs/6r/273vsd5gv1ch73ayih504s5wcxvysq-module-import-compiled.drv.bz2'.
cannot build derivation `/gnu/store/nrhi4j1vrhjfibv6i1wvwa6zq4lnilpg-compute-guix-derivation.drv': 1 dependencies couldn't be built
guix pull: error: build of `/gnu/store/nrhi4j1vrhjfibv6i1wvwa6zq4lnilpg-compute-guix-derivation.drv' failed

(first time using mail-based issues system, tried to find issue-opening rules on https://issues.guix.gnu.org/)