| 4 Jul 2025 |
 missbehaves | I'm new to Nix, and I'm trying to target a specific RISC-V toolchain for cross compilation, which is using arch rv32i and abi ilp32. I was using riscv32-none-elf but sadly it has differences and does not give me the format of binary i need. How do i build and configure the riscv toolchainfor my specific arch/abi ? | 10:03:04 |
 Alyssa Ross | You can set gcc.arch and some other options in your platform attrset. | 10:12:45 |
| Alyssa Ross | Have a look at machineFlags in pkgs/build-support/cc-wrapper/default.nix for what you can set | 10:14:32 |
 dramforever | just demo'd nix to a friend, and i want to thank the entirety of #cross-compiling:nixos.org for maintaining my go to demo for nix and nixpkgs so it mostly works: cross compiling something in a single command | 12:11:01 |
| dramforever | * just demo'd nix to a coworker, and i want to thank the entirety of
#cross-compiling:nixos.org for maintaining my go to demo for nix and nixpkgs so it mostly works: cross compiling something in a single command | 12:11:13 |
 alexfmpe | depending on what the demo is, might want to add it to one of the release-foo.nix jobs to watch for regressions
though I'm not sure how to actually lookup or be notified of failures there | 12:32:19 |
| dramforever | it's a bit of a weird thing since if i add it to release-*, i can't demo it anymore | 14:11:06 |
| dramforever | it'll just download from cache.nixos.org and be way less impressive | 14:11:21 |
 Grimmauld (any/all) | you could add --rebuild in your demo | 14:13:48 |
| dramforever | 😅 | 14:36:44 |
| dramforever | yeah probably | 14:43:34 |
 @freexploit:trafkin.com | Redacted or Malformed Event | 15:09:11 |
| @freexploit:trafkin.com | Redacted or Malformed Event | 15:09:26 |
 emily | jemalloc is deprecated upstream now anyway, so it's the better choice | 15:33:59 |
| @freexploit:trafkin.com | Redacted or Malformed Event | 15:34:55 |
| @freexploit:trafkin.com | Redacted or Malformed Event | 15:35:07 |
| @freexploit:trafkin.com | Redacted or Malformed Event | 15:35:12 |
|  @winston:milli.ng left the room. | 15:40:53 |
| alexfmpe | seems there's also a --offline | 15:46:57 |
| alexfmpe | https://nix.dev/manual/nix/2.28/command-ref/new-cli/nix3-build.html?highlight=--rebuild#opt-offline | 15:46:59 |
 lzcunt | Hey there | 17:31:52 |
| lzcunt | I've asked this question here before but now after rebasing it occurs again | 17:32:35 |
| lzcunt | i am overriding python3Minimal to add zlib back, then overriding meson to use my python3Minimal | 17:33:12 |
| lzcunt | the first part works but the second part doesn't seem to work (it seems to use regular python3Minimal instead) | 17:33:38 |
| lzcunt | i don't really understand splicing, is this something to do with that and what can I do about it? | 17:33:51 |
| lzcunt | meson does use python3.pkgs which I've heard is bad for cross but switching it to python3Packages doesn't help | 17:34:19 |
| lzcunt | the previous solution was this abomination:
(buildPackages.meson.override { python3 = (buildPackages.__splicedPackages.python3Minimal); })
| 17:35:20 |
| lzcunt | this is basically what I'm trying to do after rebasing to add zlib back in, but what I explained happens
(buildPackages.meson.override { python3 = (buildPackages.__splicedPackages.python3Minimal.override { zlib = buildPackages.zlib; allowedReferenceNames = []; }); })
| 17:36:19 |
 Artturin | overriding doesn't preserve splicing so the __splicedPackages there does nothing | 18:13:27 |
| Artturin | What commis? | 18:16:39 |
