“guix_ shell” in Guix checkout prints backtrace

OpenSubmitted by Ricardo Wurmus.
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  • Ricardo Wurmus
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Ricardo Wurmus wrote on 12 Dec 2021 13:30
“guix shell” in Guix checkout prints backtrace
(address . bug-guix@gnu.org)
87fsqym290.fsf@elephly.net
When running “guix shell” in a source checkout of Guix prints a
backtrace:

Toggle snippet (41 lines)
$ guix shell
guix shell: loading environment from '/home/rekado/dev/gx/utf/guix.scm'...
hint: Consider passing the `--check' option once to make sure your shell does not clobber environment variables.

Backtrace:
14 (primitive-load "/home/rekado/.config/guix/current/bin/guix")
In guix/ui.scm:
2206:7 13 (run-guix . _)
2169:10 12 (run-guix-command _ . _)
In ice-9/boot-9.scm:
1752:10 11 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
1752:10 10 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
In guix/store.scm:
658:37 9 (thunk)
1320:8 8 (call-with-build-handler #<procedure 7fa80677a240 at guix/ui.scm:1156:2 (continue store things mode)> _)
In guix/status.scm:
802:4 7 (call-with-status-report _ _)
In guix/scripts/environment.scm:
317:4 6 (_)
In srfi/srfi-1.scm:
673:15 5 (append-map #<procedure 7fa806784c00 at guix/scripts/environment.scm:317:16 (expr)> ((gc-root . "/home/rekado/.cache/guix/profiles/repcfratbkwoufn7si47j5owec2csk4wg7o5…") …))
586:29 4 (map1 ((gc-root . "/home/rekado/.cache/guix/profiles/repcfratbkwoufn7si47j5owec2csk4wg7o5ps5qcoyl22ff5kcq") (load package "/home/rekado/dev/gx/utf/guix.scm") (# . #t) # # …))
586:17 3 (map1 ((load package "/home/rekado/dev/gx/utf/guix.scm") (ad-hoc? . #t) (system . "x86_64-linux") (substitutes? . #t) (offload? . #t) (graft? . #t) (# . #t) (# . #t) # # #))
In guix/scripts/environment.scm:
303:4 2 (packages->outputs _ _)
In ice-9/boot-9.scm:
1685:16 1 (raise-exception _ #:continuable? _)
1685:16 0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1685:16: In procedure raise-exception:
Throw to key `match-error' with args `("match" "no matching pattern" #<unspecified>)'.
$ --8<---------------cut here---------------end--------------->8---

That’s probably because “guix.scm” doesn’t return a package. It’s not
an environment definition, so it’s expected that this doesn’t work. But
this backtrace is pretty ugly. It would be nicer to bail if guix.scm
doesn’t evaluate to a package value.

--
Ricardo
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