Error: builder for jack1-0.125.0.drv failed with exit code 2

Help
1

Hello, after nix flake update and nixos-rebuild switch --flake .#nixconfigs, I got an error below

update_trouble1
update_trouble11911×842 172 KB

and I tried nix build -v ... jack1-0.125.0.drv, I got this

update_trouble2
update_trouble21898×905 157 KB

did anyone meet this, if you need more info i’ll add it, Thanks

2

We recently switched the default compiler to GCC 14, which turns some warnings into errors by default. Someone will need to add the following line to the jack1 package.

env.NIX_CFLAGS_COMPILE = "-Wno-error=int-conversion";

The package is currently unmaintained so might be fastest for you to do that.

2 Likes
3

Thanks, I solved it, but there are still similar warnings and errors while updating recently, maybe I should wait a bit longer, thanks a lot :sweat_smile:

4

Yeah, this GCC bump seemed to be a bit worse than usual – I had to fix five different packages to unbreak my system.

You might be waiting for a while for less used packages. If you can open a PR or at least report an issue, it should greatly reduce the wait time.

5

@jtojnar Thanks for the hint with the compiler ENV. How can I set this env for my nixos build in my configuration.nix? Do I need an overlay or something like that to set environment variables that are active during build time?

6

This helped me. I can now update NixOS.
In configuration.nix:

nixpkgs.overlays = [
    (final: prev: {
      jack1 = prev.jack1.overrideAttrs (_: {
        NIX_CFLAGS_COMPILE = [
          "-Wno-int-conversion"
          "-Wno-incompatible-pointer-types"
        ];
      });
    })
  ];
7

Why use jack1? The jack2 full client is out and stable on nixpkgs