Cachix isn't used when building the template configuration

[loutr]

Hello! Just came across your project and I wanted to thank you for your nice work.

So, I've been trying to use it in the config of my RPi3B, but upon building I realised the cachix instance didn't provide the kernel package (6.1.63), which made the build quite endless.

I tried again building the default configuration provided in the readme, alone, and the exact same thing happened. Can someone confirm that the cache does or doesn't work?

Thanks

[RCMast3r]

I can confirm, I am running into the same issue.

[tstat]

Hello! In the past I have only pushed stuff to cachix when I cut a release, but I'm happy to push linux 6.1.63 to cachix now. I need to cut a new release soon, just need to dedicate some time to updating the readme and the example repo.

I pushed linux 6.1.63 to cachix. Let me know if you run into any other trouble.

[RCMast3r]

hello! I just tried your example again and I ran into the issue again.

[tstat]

Sorry, I'm sure there's a difference in our kernel dependencies. raspberry-pi-nix provides only overlays and modules, but doesn't pin a version of nixpkgs, so our kernel dependencies are likely different.

I pushed /nix/store/8x5wf0dh45yn9b16cqx12bl8r57hjrdq-linux-6.1.63 to cachix. This is the version given with a 1 month old nixpkgs commit from the latest stable branch (nixos-23.11). I have pinned this version in the latest commit of the example repo, so you could use the nixpkgs input from that flake to hit this cached linux build.

You can check your linux hash with nix path-info .#nixosConfigurations.<YOUR_CONFIG_NAME>.config.boot.kernelPackages.kernel.

I'll leave this open until we confirm that things are working for you all.

[RCMast3r]

Thank you so much for helping us with this!

I swapped over to trying out your example repo and narrowed it down to my local setup not using the cache in the first place due to a trusted-users issue on my end (I am using the nix package manager on regular Ubuntu) as the root user and the user you are trying to add to the trusted-users list has to be in the list in nix.conf. I swapped extra-substituters to trusted-substituters in an attempt to get around it but made it silently fail to pull from your cache.

After fixing this issue I am happy to report that I am pulling everything from your cachix and I have a working nix build❤

[RCMast3r]

I can make a PR to add a blurb about this in your README if you would like

[tstat]

Ok great, glad you got it working. PRs improving the README are welcome.

[loutr]

Works like a charm for me too :)