Archived
beatzaplentyandClaude Sonnet 5
6dcbae5659
One file (variables.nix) holding every value that was previously hardcoded and repeated across modules: LAN domain/CIDR, home/tailnet domains, cross-host references (nix-cache substituter hostname, NFS server hostname, remote-builder user), PXE/PBS IPs, timezone, and the primary username. Wired in via flake.nix's specialArgs (and home-manager's extraSpecialArgs for the two home.nix files), so any module picks it up by just adding `vars` to its function arguments — no explicit import needed. Two hosts (nix-cache, server) now derive their own networking.hostName from the same variable other hosts use to reach them, so there's exactly one place to change either identifier. Purely mechanical: every substituted value matches what was already there, confirmed by identical toplevel .drv paths for all 17 targets before and after. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
27 lines
748 B
Nix
27 lines
748 B
Nix
{ pkgs, vars, ... }:
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{
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# Install the remote builder key on each client host (do not commit private keys):
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# sudo install -d -m 0700 /root/.ssh
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# sudo install -m 0600 ./nixremote /root/.ssh/nixremote
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# sudo ssh -i /root/.ssh/nixremote nixremote@nix-cache nix-store --version
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nix.distributedBuilds = true;
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nix.buildMachines = [
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{
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hostName = vars.nixCacheHost;
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sshUser = vars.remoteBuilderUser;
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sshKey = "/root/.ssh/${vars.remoteBuilderUser}";
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system = pkgs.stdenv.hostPlatform.system;
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maxJobs = 4;
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speedFactor = 2;
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supportedFeatures = [ "nixos-test" "benchmark" "big-parallel" "kvm" ];
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}
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];
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nix.settings = {
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builders-use-substitutes = true;
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max-jobs = "auto";
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};
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}
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