Re: [PATCH -v2 2/2] guix: profiles: create fonts.dir/scale for all fonts directories

["Huang\, Ying" <huang_ying_caritas@163.com>]

ludo@gnu.org (Ludovic Courtès) writes:

> huang ying <huang.ying.caritas@gmail.com> skribis:
>
>> On Wed, Mar 8, 2017 at 4:24 AM, Danny Milosavljevic
>> <dannym@scratchpost.org> wrote:
>>> Hi,
>>>
>>>> +                            (with-directory-excursion dir
>>>> +                              (and (file-exists? fonts-scale-file)
>>>> +                                   (delete-file fonts-scale-file))
>>>> +                              (and (file-exists? fonts-dir-file)
>>>> +                                   (delete-file fonts-dir-file))
>>>> +                              (system* mkfontscale)
>>>> +                              (system* mkfontdir)
>>>
>>> Please do not throw away the status code here (result of system*). You can check for okayness by (zero? (system* ...)).
>>
>> Then what is the intended behavior?  abort the build process with
>> message and non-zero exit code?  Usually we will raise a exception or
>> just display some message and exit?
>
> See for instance ‘info-dir-file’, which does this:
>
>           (exit (every install-info
>                        (append-map info-files
>                                    '#$(manifest-inputs manifest))))
>
> The effect is to exit with 0 upon success and some other code upon
> failure, leading to a proper derivation build failure.

Sure.

Best Regards,
Huang, Ying

> HTH!
>
> Ludo’.