From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Nieuwenhuizen <janneke@gnu.org>
Subject: bug#40839: Shepherd activation .GO files are not cross-compiled ...
 and the Hurd
Date: Sat, 25 Apr 2020 19:38:42 +0200
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In-Reply-To: <875zdnd0jf.fsf@gnu.org> ("Ludovic
 \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
 \=\?utf-8\?Q\?s\?\= message of "Sat, 25 Apr 2020 17:53:40 +0200")
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 40839@debbugs.gnu.org

Ludovic Court=C3=A8s writes:

Hello!

>> Now, the tricky part is the value of target, because
>> #$(%current-target-system) might not be correct in that context.
>
> Yes, that brings us back to <https://issues.guix.gnu.org/issue/29296>.
> Time flies!  But now we really need to address it.

Oh!  Yes, I guess we need that as soon as we unify the hurd VM with the
guix system build?

> Jan Nieuwenhuizen <janneke@gnu.org> skribis:
>
>> +  (let ((target (%current-target-system)))
>> +    (with-extensions (list shepherd)
>> +      (computed-file (string-append (basename (scheme-file-name file) "=
.scm")
>> +                                    ".go")
>> +                     #~(begin
>
> The problem here is that =E2=80=98%current-target-system=E2=80=99 is not =
resolved in the
> right context.  Though in practice, it=E2=80=99s =E2=80=9Cgood enough=E2=
=80=9D when using =E2=80=98guix
> system build --target=E2=80=99 though, because =E2=80=98%current-target-s=
ystem=E2=80=99 is bound
> once and for all at the beginning.
>
> What about applying this patch, but adding a FIXME comment above =E2=80=
=98let=E2=80=99
> pointing at <https://bugs.gnu.org/29296>?

Pushed to core-updates as d2fc76462e72268ee5b04fe53805efc05c35e139,
with...

> Also, you can avoid duplicating the =E2=80=98compile-file=E2=80=99 call b=
y writing it
> like this:
>
>   (with-target #$(or target #~%host-type)

...this change too.  Nice, that works (I tried (%current-system), which
did not work).

Thanks!
janneke

--=20
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar=C2=AE http://AvatarAcademy.com