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bug#61841: ‘guix shell’ computes different package derivation than ‘guix
From: |
Ludovic Courtès |
Subject: |
bug#61841: ‘guix shell’ computes different package derivation than ‘guix build’ |
Date: |
Mon, 27 Feb 2023 22:08:37 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) |
Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:
> Ludovic Courtès <ludo@gnu.org> writes:
[...]
>> Commit 68775338a510f84e63657ab09242d79e726fa457 turned out to have
>> unintended side effects:
>>
>> https://issues.guix.gnu.org/61841
>
> Ugh.
>
>> I fixed it with:
>>
>> a516a0ba93 gexp: computed-file: Do not honor %guile-for-build.
>> fee1d08f0d pack: Make sure tests can run without a world rebuild.
>>
>> Please take a look.
>
> Thank you. I still think it'd be nicer if computed-file had a means to
> honor %guile-for-build rather than having to accommodate it specially as
> you did in fee1d08f0d, so that it'd be symmetrical to gexp->derivation
> in that regard. Why can't they?
Like I wrote, ‘default-guile’ returns a package whereas
‘%guile-for-build’ returns a derivation.
The latter is inherently lower-level: it’s used together with the
monadic interface or with plain ‘derivation’, when we know which system
we’re targeting. The former is higher-level, system-independent; it
must be used for <computed-file> and similar forms, which are
system-independent.
Ludo’.