guix-commits@gnu.org writes:

> efraim pushed a commit to branch staging
> in repository guix.
>
> commit 0244952c11c0409597fce5c39dfbcafdfd2ea651
> Author: Efraim Flashner <efraim@flashner.co.il>
> Date:   Thu Mar 28 19:17:34 2019 +0200
>
>     build-system/ruby: Use invoke.
>
>     * guix/build/ruby-build-system.scm (install): Use invoke.
> ---
>  guix/build/ruby-build-system.scm | 15 +++++++--------
>  1 file changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/guix/build/ruby-build-system.scm b/guix/build/ruby-build-system.scm
> index ba0de12..49400b2 100644
> --- a/guix/build/ruby-build-system.scm
> +++ b/guix/build/ruby-build-system.scm
> @@ -143,14 +143,13 @@ GEM-FLAGS are passed to the 'gem' invokation, if present."
>           (gem-dir (string-append vendor-dir "/gems/" gem-name)))
>      (setenv "GEM_VENDOR" vendor-dir)
>
> -    (or (zero?
> -         (apply system* "gem" "install" gem-file
> -                "--verbose"
> -                "--local" "--ignore-dependencies" "--vendor"
> -                ;; Executables should go into /bin, not
> -                ;; /lib/ruby/gems.
> -                "--bindir" (string-append out "/bin")
> -                gem-flags))
> +    (or (apply invoke "gem" "install" gem-file
> +               "--verbose"
> +               "--local" "--ignore-dependencies" "--vendor"
> +               ;; Executables should go into /bin, not
> +               ;; /lib/ruby/gems.
> +               "--bindir" (string-append out "/bin")
> +               gem-flags)
>          (begin
>            (let ((failed-output-dir (string-append (getcwd) "/out")))
>              (mkdir failed-output-dir)

Hey Efraim,

Given that invoke raises an exception, I doubt the custom error handling
code here will ever be executed.

I guess you could change it to catch the exception, but using system*
and looking at the exit code seems pretty reasonable to me. What do you
think?

Chris