| 11 Jul 2021 |
 ius | It seems to run configure with a correct --host, but then run it again with CC set to the build cc, then make afterwards obviously results in wrong output | 13:51:03 |
| 12 Jul 2021 |
|  Rick (Mindavi) joined the room. | 08:17:49 |
| Rick (Mindavi) | Hey! Just found out there's a room for cross-compilation :) | 08:19:23 |
 Domen Kožar | ius: nice, see https://github.com/NixOS/patchelf/issues/283 | 12:25:04 |
 sterni (he/him) | Domen Kožar: btw we can have fork()ing binaries with binfmt_misc in user space however the executable formats need to be registered via /proc first, so this is inherently impure, sadly | 13:44:14 |
| Domen Kožar | sterni (he/him): does that require sudo? | 13:44:56 |
| sterni (he/him) | yes | 13:50:51 |
| sterni (he/him) | https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html | 13:50:52 |
| 13 Jul 2021 |
 siraben | In reply to @rick:matrix.ciphernetics.nl
Hey! Just found out there's a room for cross-compilation :) it's awesome 😎 | 01:38:10 |
| 15 Jul 2021 |
 piegames | How can I get a pkgs.pkgsCross.myCustomSystem? Where is pkgsCross defined? | 10:00:42 |
| sterni (he/him) | piegames: it populates the cross set with the attributes defined in lib/systems/examples.nix | 10:34:41 |
| piegames | sterni (he/him): Yeah but what if it's not on the list? | 11:11:03 |
| sterni (he/him) | since you don't have access to nixpkgsFun it is a bit more cumbersome to emulate, something like this should work:
self: super: {
pkgsCross = super.pkgsCross // {
mySystem = import super.path (super.config // {
crossSystem = mySystemDefinition;
});
};
}
| 11:19:40 |
| sterni (he/him) | not sure usually you don't need the pkgsCross attribute desparately since it is the same as passing stuff to the crossSystem argument of nixpkgs | 11:21:54 |
| sterni (he/him) | it's just for convenience, really | 11:21:59 |
| piegames | I see thank you | 11:31:51 |
| piegames | Well, it has the disadvantage of having to import nixpkgs twice, since I need some native packages too | 11:32:12 |
| sterni (he/him) | piegames: you can always use buildPackages for that | 11:33:16 |
| piegames | Oh interesting, I didn't know that | 11:35:05 |
| piegames | Instead of libc = "newlib";, i need to use libnano. Is this generally possible in nixpkgs? | 12:26:50 |
| sterni (he/him) | libnano is not packaged so no | 12:27:29 |
| sterni (he/him) | but it is not impossible in general :) | 12:27:37 |
| 17 Jul 2021 |
 symphorien | this PR is probably worth mentionning here: https://github.com/NixOS/nixpkgs/issues/130349 | 14:01:52 |
| siraben | That seems like a good idea, it's recurring pattern in Nixpkgs and I sometimes have to second-guess what to compare. | 15:27:02 |
| symphorien | It used to exist and was removed so I'd like yo hear why 😃 | 15:57:42 |
| symphorien | I think there was stdenv.isCross | 17:23:11 |
| Rick (Mindavi) | In reply to @symphorien:xlumurb.eu
It used to exist and was removed so I'd like yo hear why 😃 John has a good point | 17:24:49 |
| symphorien | Oh that's the reason | 17:27:00 |
| Rick (Mindavi) | In short: there's no one-size-fits-all solution, and being explicit is better | 17:41:14 |
| sterni (he/him) | sometimes you'd need to check targetPlatform equality for example | 20:53:55 |
