Apologies, I should clarify -- the Guile for the S-Expression appears to be fine, but the Guile referenced in the shebang of the ungexp'd program-file does not reflect the system.

On July 26, 2019 11:37:20 AM EDT, "Jakob L. Kreuze" <zerodaysfordays.sdf.org@sdf.org> wrote:
>Could you please try to reproduce using the example I provided? The
>derivation itself is handled appropriately, but its references are not.
>
>On July 26, 2019 11:28:11 AM EDT, "Ludovic Courtès" <ludo@gnu.org>
>wrote:
>>zerodaysfordays@sdf.lonestar.org (Jakob L. Kreuze) skribis:
>>
>>> Changing it to the following:
>>>
>>> #+BEGIN_SRC scheme
>>> (lower-gexp exp
>>>             #:system "i686-linux"
>>>             #:target "i686-unknown-linux-gnu"
>>>             #:guile-for-build #f)
>>> #+END_SRC
>>>
>>> The Guile used is still a 64-bit LSB executable.
>>
>>I can’t reproduce it on current ‘master’:
>>
>>--8<---------------cut here---------------start------------->8---
>>scheme@(guile-user)> ,run-in-store (lower-gexp #~(+ 2 3)
>>#:guile-for-build #f #:system "mips64el-linux")
>>$6 = #<<lowered-gexp> sexp: (+ 2 3) inputs: () sources: () guile:
>>#<<derivation-input> drv: #<derivation
>>/gnu/store/jsnihqsz6nxwv88pr41i2y3403f959cf-guile-2.2.4.drv =>
>>/gnu/store/n2570pg8cahc8k9iqrg5qngyzf6j0xzr-guile-2.2.4-debug
>>/gnu/store/j9a8dx25cj045yl5l32ajkkjf92ib3y1-guile-2.2.4 46e3230>
>>sub-derivations: ("out")> load-path: () load-compiled-path: ()>
>>scheme@(guile-user)> (derivation-system (derivation-input-derivation
>>(lowered-gexp-guile $6)))
>>$7 = "mips64el-linux"
>>--8<---------------cut here---------------end--------------->8---
>>
>>Not even when cross-compiling (BTW, #:target probably doesn’t make
>>sense
>>above, since it’s cross-compiling from i686 to i686):
>>
>>--8<---------------cut here---------------start------------->8---
>>scheme@(guile-user)> ,run-in-store (lower-gexp #~(+ 2 3)
>>#:guile-for-build #f #:system "mips64el-linux" #:target "i586-pc-gnu")
>>$8 = #<<lowered-gexp> sexp: (+ 2 3) inputs: () sources: () guile:
>>#<<derivation-input> drv: #<derivation
>>/gnu/store/jsnihqsz6nxwv88pr41i2y3403f959cf-guile-2.2.4.drv =>
>>/gnu/store/n2570pg8cahc8k9iqrg5qngyzf6j0xzr-guile-2.2.4-debug
>>/gnu/store/j9a8dx25cj045yl5l32ajkkjf92ib3y1-guile-2.2.4 46e3230>
>>sub-derivations: ("out")> load-path: () load-compiled-path: ()>
>>scheme@(guile-user)> (derivation-system (derivation-input-derivation
>>(lowered-gexp-guile $8)))
>>$9 = "mips64el-linux"
>>--8<---------------cut here---------------end--------------->8---
>>
>>Am I missing something?
>>
>>Thanks,
>>Ludo’.
>
>-- 
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