* bug#57801: 'inferior-with-channels' is eager, making it hard to use in channels
@ 2022-09-14 12:28 Maxime Devos
2022-09-14 17:18 ` Lukasz Olszewski
0 siblings, 1 reply; 3+ messages in thread
From: Maxime Devos @ 2022-09-14 12:28 UTC (permalink / raw)
To: 57801
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As experienced by Luks6655, you can't do
(define inferior (inferior-with-channels CHANNELS))
on the top-level of a channel module. I think the issue is that
inferior-with-channels is eager (not lazy), so it cannot be used in a
channel on the top-level, as builds (including channel builds) are
isolated from the network and have limited access to the file system.
If it would be made lazy, then
(define inferior (inferior-with-channels CHANNELS))
(define-public p
(package
[...]
(inputs (list (lookup-inferior-package inferior "hello")))))
should, in theory, work (unverified).
Greetings,
Maxime.
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^ permalink raw reply [flat|nested] 3+ messages in thread* bug#57801: 'inferior-with-channels' is eager, making it hard to use in channels
2022-09-14 12:28 bug#57801: 'inferior-with-channels' is eager, making it hard to use in channels Maxime Devos
@ 2022-09-14 17:18 ` Lukasz Olszewski
2022-09-15 15:46 ` Maxime Devos
0 siblings, 1 reply; 3+ messages in thread
From: Lukasz Olszewski @ 2022-09-14 17:18 UTC (permalink / raw)
To: 57801
Additionally this fails even when used like this:
(define inferior
(mlambda ()
(inferior-for-channels channels)))
(lookup-inferior-packages (inferior) "somepackage")
^ permalink raw reply [flat|nested] 3+ messages in thread* bug#57801: 'inferior-with-channels' is eager, making it hard to use in channels
2022-09-14 17:18 ` Lukasz Olszewski
@ 2022-09-15 15:46 ` Maxime Devos
0 siblings, 0 replies; 3+ messages in thread
From: Maxime Devos @ 2022-09-15 15:46 UTC (permalink / raw)
To: Lukasz Olszewski, 57801
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On 14-09-2022 19:18, Lukasz Olszewski wrote:
> Additionally this fails even when used like this:
>
> (define inferior
> (mlambda ()
> (inferior-for-channels channels)))
This makes it lazy (not eager).
> (lookup-inferior-packages (inferior) "somepackage")
You are running (inferior) directly after defining the lazy thing,
making it effectively _eager_ (not lazy) again.
Instead of doing this on the top-level, move the
lookup-inferior-packages to inside the 'inputs' or 'native-inputs', to
_keep_ it lazy.
Greetings,
Maxime.
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-09-15 15:51 UTC | newest]
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2022-09-14 12:28 bug#57801: 'inferior-with-channels' is eager, making it hard to use in channels Maxime Devos
2022-09-14 17:18 ` Lukasz Olszewski
2022-09-15 15:46 ` Maxime Devos
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