* bug#35751: "guix environment -s" doesn't set %current-system in gnu/packages
@ 2019-05-15 15:32 Danny Milosavljevic
2019-05-18 17:19 ` Ludovic Courtès
0 siblings, 1 reply; 2+ messages in thread
From: Danny Milosavljevic @ 2019-05-15 15:32 UTC (permalink / raw)
To: 35751
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Hi,
when doing "guix environment -s armhf-linux", apparently it doesn't set
%current-system to "armhf-linux" for packages in gnu/packages at toplevel
context.
That would be convenient for development, f.e. instead of "guix build" I often
use "guix environment" inside the git checkout of the package. In this case
it's differing.
Should it?
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^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#35751: "guix environment -s" doesn't set %current-system in gnu/packages
2019-05-15 15:32 bug#35751: "guix environment -s" doesn't set %current-system in gnu/packages Danny Milosavljevic
@ 2019-05-18 17:19 ` Ludovic Courtès
0 siblings, 0 replies; 2+ messages in thread
From: Ludovic Courtès @ 2019-05-18 17:19 UTC (permalink / raw)
To: Danny Milosavljevic; +Cc: 35751
Hi Danny,
Danny Milosavljevic <dannym@scratchpost.org> skribis:
> when doing "guix environment -s armhf-linux", apparently it doesn't set
> %current-system to "armhf-linux" for packages in gnu/packages at toplevel
> context.
Correct. That’s the way it’s meant to work: the initial value of
‘%current-system’ when files get loaded should not matter.
> That would be convenient for development, f.e. instead of "guix build" I often
> use "guix environment" inside the git checkout of the package. In this case
> it's differing.
Package definitions should refer to ‘%current-system’ only from within
the dynamic extent of a thunked field.
For example, if a package refers to ‘%current-system’ from ‘arguments’,
or from a procedure called from ‘arguments’, everything is fine:
‘%current-system’, at that point, will be bound to whatever was selected
with ‘-s’.
Does that make sense?
Thanks,
Ludo’.
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2019-05-15 15:32 bug#35751: "guix environment -s" doesn't set %current-system in gnu/packages Danny Milosavljevic
2019-05-18 17:19 ` Ludovic Courtès
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