From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mathieu Othacehe <m.othacehe@gmail.com>
Subject: bug#40839: Shepherd activation .GO files are not cross-compiled ...
 and the Hurd
Date: Sat, 25 Apr 2020 14:13:49 +0200
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To: Jan Nieuwenhuizen <janneke@gnu.org>
Cc: 40839@debbugs.gnu.org


Hello Jan,

> /gnu/store/dbmj8ls2bwn0vbwi6qzng56rgrza3z0i-shepherd-host-name.go
> $ 11:27:25 janneke@dundal:~/src/guix/core-updates [env]
> $ file /gnu/store/dbmj8ls2bwn0vbwi6qzng56rgrza3z0i-shepherd-host-name.go
> /gnu/store/dbmj8ls2bwn0vbwi6qzng56rgrza3z0i-shepherd-host-name.go: ELF 64-bit LSB shared object no machine, version 1 (embedded), dynamically linked, with debug_info, not stripped

I strongly suspect this is because we would need to wrap the
"compile-file" call in "scm->go" procedure of (gnu services shepherd)
inside a "with-target".

That would look like:

--8<---------------cut here---------------start------------->8---
(if target
    (with-target target
                 (compile-file #$file #:output-file #$output
                               #:env env))
  (compile-file #$file #:output-file #$output
                #:env env))
--8<---------------cut here---------------end--------------->8---


Now, the tricky part is the value of target, because
#$(%current-target-system) might not be correct in that context.

Mathieu