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lib/systems/inspect.nix: add isILP32 predicate #208697

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merged 1 commit into from Jan 3, 2023
Merged

lib/systems/inspect.nix: add isILP32 predicate #208697

merged 1 commit into from Jan 3, 2023

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@ghost ghost commented Jan 2, 2023

Description of changes

I've run into a few packages that need an extra flag on platforms where int has more bits than void* does. I know of three such platforms:

This PR introduces a predicate so the package flags can be added in a generic way.

Things done

I've run into a few packages that need an extra flag on platforms
where `int` has more bits than `void*` does.  I know of three such
platforms:

* [aarch64ilp32], used on both Linux and also on the [Apple Watch]
* [x32], the x86 ILP32 ABI
* [mips64n32], used on [Longsoon] and Cavium Octeon routers.

This PR introduces a predicate so the package flags can be added in
a generic way.

[Apple Watch]: https://gist.github.com/woachk/943828f37c14563a607a26116435bf27#watch
[mips64n32]: https://en.wikipedia.org/wiki/MIPS_architecture#Calling_conventions
[Longsoon]: https://en.wikipedia.org/wiki/Loongson
[x32]: https://en.wikipedia.org/wiki/X32_ABI
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