Re: crate importer throws

[Maxime Devos <maximedevos@telenet.be>]

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On 11-10-2022 23:39, jgart wrote:
> ```
>   λ guix import crate the-way
> ;;; Failed to autoload string->semver-range in (semver ranges):
> ;;; no code for module (semver ranges)
> Backtrace:
> In ice-9/boot-9.scm:
>    1752:10  9 (with-exception-handler _ _ #:unwind? _ # _)
> In unknown file:
>             8 (apply-smob/0 #<thunk 7f6f033b62e0>)
> In ice-9/boot-9.scm:
>      724:2  7 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
> In ice-9/eval.scm:
>      619:8  6 (_ #(#(#<directory (guile-user) 7f6f033bbc80>)))
> In guix/ui.scm:
>     2263:7  5 (run-guix . _)
>    2226:10  4 (run-guix-command _ . _)
> In guix/scripts/import.scm:
>      92:11  3 (guix-import . _)
> In guix/scripts/import/crate.scm:
>      95:24  2 (guix-import-crate . _)
> In guix/import/crate.scm:
>      287:9  1 (crate->guix-package "the-way" #:version _ # _ #:repo _)
>     260:26  0 (find-crate-version #<<crate> name: "the-way" latest-v…> …)
> 
> guix/import/crate.scm:260:26: In procedure find-crate-version:
> error: string->semver-range: unbound variable
> ```
> 
> WDYT

I think it should ask to run in an environment with "guile-semver" in a 
nice error message.

Greetings,
Maxime.

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