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NixOS Reproducible Builds

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Report: https://reproducible.nixos.org Project progress: https://github.com/orgs/NixOS/projects/30128 Servers

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4 May 2023
@baloo_:matrix.orgbaloohttps://gitlab.haskell.org/ghc/ghc/-/merge_requests/7353 that was the commit I had in mind20:53:28
@baloo_:matrix.orgbaloowhich merged in ghc 9.4.120:53:54
@baloo_:matrix.orgbalooin any case, raboof seems like he tried.20:55:33
@baloo_:matrix.orgbaloo * in any case, raboof says he tried.20:55:47
5 May 2023
@raboof:matrix.orgraboofhttps://reproducible.nixos.org/nixos-iso-gnome-runtime/ <- gnome runtime report 🎉. No haskell it seems, though plenty of other goodies ;)16:28:11
@raboof:matrix.orgraboof
In reply to @artturin:matrix.org
http://reproducible.nixos.org/ doesn't redirect to https
fixed!
16:28:59
@rnhmjoj:maxwell.ydns.eu@rnhmjoj:maxwell.ydns.eu

xserver.conf

I think this is due to find order being essentially undefined behavior in nixos/modules/services/x11/xserver.nix. it needs a | sort to be deterministic.

16:55:05
@trofi:matrix.org@trofi:matrix.org Yeah. I think find does filesystem order (and each does it's own ordering). 16:57:48
@delroth:delroth.netdelroth
In reply to @raboof:matrix.org
finally hacked in a way to get a report of just the runtime dependencies, https://reproducible.nixos.org/nixos-iso-minimal-runtime/ - no surprises there, the Linux BPF/BTF problem and Python remaining. Hoping to do the graphical iso later.
I worry a bit that this might be trading off false positives for false negatives. Let's say I have a derivation "drv" which does "cp ${otherdrv}/foo $out/foo" (unlikely, but in practice this could be e.g. gzip, or static linking, or some other kind of bundling). As far as I understand now the report wouldn't catch unreproducibility of "otherdrv", and it would happily say that "drv" is reproducible, which is irrelevant (since its "non-runtime dependencies" are what matters).
20:11:29
@delroth:delroth.netdelroth(Does that happen in practice in nixpkgs? I don't know, I wouldn't be surprised if it did. Is it a major issue? No clue either.)20:11:54
@raitobezarius:matrix.orgraitobezarius(Yes, it happens through trivial builders sometimes I suppose)20:15:21
@raitobezarius:matrix.orgraitobezarius(Though I'm okay if we keep both pieces ?)20:15:33
@delroth:delroth.netdelrothBy "both pieces" here do you mean "both types of report, runtime-only and all"? As long as people understand that the "runtime dependencies" report actually might exclude some runtime dependencies, then sure :)20:20:40

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