#nixos-aarch64 on 2018-12-24

2018-09-23 16:56 gchristensen changed the topic of #nixos-aarch64 to: Get access to the NixOS Community aarch64 build box: https://github.com/nix-community/aarch64-build-box ... todo: https://hydra.nixos.org/jobset/nixpkgs/trunk#tabs-jobs build box status: https://monitoring.nix.ci/d/hkRCcV0mk/instance-metrics?var-instance=aarch64.nixos.community&orgId=1

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09:18 <makefu> so awesome!

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10:58 <timokau[m]> What a nice christmas present samueldr!

10:59 <timokau[m]> How did you end up solving the memory issue?

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14:33 <samueldr> timokau[m]: I didn't

14:34 <samueldr> if you're talking about #52721

14:34 <{^_^}> https://github.com/NixOS/nixpkgs/pull/52721 (by samueldr, 1 day ago, merged): Fixes eval issues in hydra by setting AArch64 as limited support

14:34 <samueldr> Too many heap sections: Increase MAXHINCR or MAX_HEAP_SECTS

14:35 <samueldr> it still needs to be done to get proper support, but we're now at least producing the images, which I hope tests a bit of aarch64 support

14:38 <samueldr> I still need an adult^W^W someone with better knowledge around nix+boehm to take a peek at whether nix really leaks or not

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14:54 <samueldr> oh, fun thing

14:54 <samueldr> https://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents

14:55 <samueldr> there was *one* eval that somehow got through

14:55 <samueldr> with the fully supported aarch64

14:55 <samueldr> and within the tests only the pair for predictable interfaces failed

14:56 <samueldr> (there were two failures due to dependencies timing out, but those are not worrying me)

15:04 <timokau[m]> Oh I thought an eval was required for the image build

15:05 <samueldr> not entirely, just enough of it eval'd so it works

15:05 <samueldr> though i'd prefer seeing a "supported system" kind of eval

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19:48 <balsoft> My board booted again, I am trying to lustrate to NixOS as specified in the manual. I will report the results later.

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20:01 <balsoft> samueldr: Do you think this will work?

20:01 <samueldr> with care, sure

20:01 <samueldr> never done it

20:01 <balsoft> Oh, ok

20:01 <balsoft> I thought about it for some time

20:02 <samueldr> and you might still need to write a u-boot that works with generic distros, which probably the one from your ubuntu image won't

20:02 <balsoft> Ok, I think that U-boot there is pretty generic

20:02 <balsoft> I think it's mainline

20:02 <balsoft> Not sure though

20:02 <balsoft> I wasn't able to find any downstream U-Boot for this board

20:02 <samueldr> if it's from orange pi, I don't think it's mainline (I could be wrong)

20:03 <samueldr> it needs to have this enabled: https://github.com/u-boot/u-boot/blob/master/doc/README.distro

20:03 <samueldr> that's how nixos is configured to work with u-boot

20:03 <balsoft> Also can I speed things up with cross-compilation?

20:03 <balsoft> I have a pretty powerful PC as I'm back home

20:04 <balsoft> It's pretty slow to build what I want on the board itself

20:05 <samueldr> you can't really mix with cross-compilation as inputs and output is different

20:06 <samueldr> you can build something on your PC with cross, copy it to the board and use it

20:06 <samueldr> but can't substitute a thing that's not-cross with a cross-built one

20:06 <balsoft> Can I run QEMU on My PC and compile from there?

20:06 <samueldr> sure

20:07 <samueldr> YMMV as qemu-user might fail to build things, and full-blown qemu for aarch64 might be slow

20:07 <samueldr> *migh*

20:07 <samueldr> might*

20:08 <balsoft> Ok then, I think I'm better off just leaving the build with --keep-going overnight

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