Re: Guix supported-systems option

[Julien Lepiller]

That's how it's done with some packages that need arch-specific things (inputs, 
build phases, …) so yes :)

Le 14 janvier 2023 23:01:49 GMT+01:00, phodina <phodina@protonmail.com> a écrit 
:
>Hi Julien,
>
>> I think you have multiple packages with the same name and version, but 
>> different supported systems. Am I right?
>
>you are correct. I have multiple package definitions as shown in the attached 
>scheme file.
>
>The names and versions are exactly the same, just the origin differs and Guix 
>picks "randomly" one of them.
>
>I did as you suggested to rename the packages - append the arch. This works in 
>short term but I'd like to have one profile and just apply it on my laptop 
>(x86_64) as well as on Raspberry Pi (aarch64, recently added to Guix by 
>Stefan).
>
>Having different names will then not work or results in even bigger mess with 
>if statements.
>
>> Now, supported-systems does not mean "remove this package on other 
>> architectures", but rather "can't build this on other architectures". So 
>> it's perfectly possible that guix will arbitrarily select a package for a 
>> different architecture.
>
>Well this is the reason I ask. I though this has deeper meaning as to tell 
>Guix, okay you found a package with that name, but it's not for current 
>architecture. So keep looking and if you don't find any other return this one 
>with a warning that it's not supported.
>
>So the "right" way would be conditionally select the right origin for the 
>package and use just one package definition with list of supported systems, 
>right?
>
>----
>Petr