Building the custom kernel

On a NIX machine:

export NIX_BUILD_CORES=0
nix-build '<nixpkgs/nixos>' -A config.system.build.kernel --arg configuration ./custom-kernel.nix

Uploading the kernel as an artifact to Gitea

1. Create a tarball of the built kernel:

mkdir result-writable
cp -rL result/lib/modules/6.6.63/kernel result-writable/kernel
sudo chmod -R u+rwX,g+rwX,o+rX result-writable
tar -czf custom-kernel.tar.gz -C result-writable .
rm -rf result-writable

2. Create a new release on Gitea and upload the tarball