| 17 Sep 2024 |
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| 19 Sep 2024 |
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 Gaétan Lepage | Do you bother fixing VERGEN warnings (complaining about not finding git and thus not being able to fill the VERGEN_* variables) ? | 11:50:46 |
 Alyssa Ross | lots of packages do — plenty of examples in Nixpkgs | 11:52:41 |
| Gaétan Lepage | Oh yes, I know about the cosmic ones for instance. I was wondering whether it was important or not.
I will go for it as it cannot hurt :) | 12:05:43 |
| Alyssa Ross | exactly | 12:11:57 |
| 20 Sep 2024 |
|  alice joined the room. | 03:37:14 |
 Theo Paris | Hmm should I make a new issue since this is closed? https://github.com/nix-community/home-manager/issues/3482#issuecomment-2362875487 | 05:48:46 |
| Theo Paris | * Hmm should I make a new issue in nixpkgs itself since this is closed? https://github.com/nix-community/home-manager/issues/3482#issuecomment-2362875487 | 05:49:00 |
| Theo Paris | I ran nix develop on a flake with rustc in nativeBuildInputs and then cargo run and it failed. I then added iconv to buildInputs on darwin and it worked | 05:49:42 |
| Alyssa Ross | That doesn't sound like an issue? | 07:28:26 |
| Alyssa Ross | Sometimes Rust programs depend on iconv, so you have to add an iconv input. | 07:28:45 |
 Enric Morales | What would be the process of overriding the attrs of a cross-compiling rustc (patches or whatever phase)? I am trying in different modifications but not quite hitting the correct incantation:
cross = import ../../../.. {
system = hostPlatform.system;
crossSystem = lib.systems.examples.arm-embedded // {
rust.rustcTarget = buildTarget.targetPlatform;
};
overlays = [
(final: prev: {
rustc = prev.wrapRustc (
prev.rustc.unwrapped.overrideAttrs (
{
patches ? [ ],
...
}:
{
patches = patches ++ [ ./fix-rustc-bootstrap.patch ];
}
)
);
})
];
};
of course, if I remove pkgCross and the platform, the rustc will be properly overridden, but the cross-one being untouched. I tried overlaying and setting pkgsBuildTarget instead, but then encountered the following error:
error: attribute 'targetPackages' missing
| 09:33:24 |
| Enric Morales | * What would be the process of overriding the attrs of a cross-compiling rustc (patches or whatever phase)? The derivation would be inside nixpkgs. I am trying in different modifications but not quite hitting the correct incantation:
cross = import ../../../.. {
system = hostPlatform.system;
crossSystem = lib.systems.examples.arm-embedded // {
rust.rustcTarget = buildTarget.targetPlatform;
};
overlays = [
(final: prev: {
rustc = prev.wrapRustc (
prev.rustc.unwrapped.overrideAttrs (
{
patches ? [ ],
...
}:
{
patches = patches ++ [ ./fix-rustc-bootstrap.patch ];
}
)
);
})
];
};
of course, if I remove pkgCross and the platform, the rustc will be properly overridden, but the cross-one being untouched. I tried overlaying and setting pkgsBuildTarget instead, but then encountered the following error:
error: attribute 'targetPackages' missing
| 09:34:08 |
| Alyssa Ross | We don't generally build a separate cross rustc | 09:37:02 |
| Alyssa Ross | Just a cross std | 09:37:05 |
| Alyssa Ross | (see fastCross in Nixpkgs)
| 09:37:12 |
| Enric Morales | In reply to @qyliss:fairydust.space
(see fastCross in Nixpkgs)
OK! I'll check fastCross then, thanks Alyssa Ross! | 10:08:51 |
| Enric Morales | having read that comment in rustc.nix and a bit more of the buildPhase, my patch would need to be applied to build the std: it applies to the configure script, as upstream has a [bug[(https://github.com/rust-lang/rust/issues/130602) that prevents setting, e.g. the linker options for targets which have a dot. It's what I tried to address last week by changing the configure method. | 10:22:58 |
| Enric Morales | * having read that comment in rustc.nix and a bit more of the buildPhase, my patch would need to be applied to build the std: it applies to the configure script, as upstream has a bug that prevents setting, e.g. the linker options for targets which have a dot. It's what I tried to address last week by changing the configure method. | 10:23:21 |
| Enric Morales | * having read that comment in rustc.nix and a bit more of the buildPhase, my patch would need to be applied to build the std: it applies to the configure script, as upstream has a bug that prevents setting options for targets which have a dot (like thumbv8m.main). It's what I tried to address last week by changing the configure method. | 10:23:51 |
| Alyssa Ross | hmm, I'd expect your overlay there to be doing the right thing | 11:21:05 |
| Alyssa Ross | Wait, did you say you're using pkgsCross, and importing nixpkgs while setting crossSystem?
| 11:21:58 |
| Enric Morales | sorry, I tried several iterations. The first was with pkgsCross and that's what I wrote in the message, then tried with just the overlay, modifying rustc as in the code above, but mistakenly left the mention of pkgsCross, adding to the confusion | 18:59:40 |
| 21 Sep 2024 |
|  Autumn joined the room. | 05:43:46 |
|  @thescientiac:matrix.org left the room. | 06:44:31 |
| 22 Sep 2024 |
|  rane [they/them] joined the room. | 09:51:23 |
