106 lines
2.9 KiB
Nix
106 lines
2.9 KiB
Nix
{
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config,
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clan-core,
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self,
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lib,
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...
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}:
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let
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inherit (lib)
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filterAttrs
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mkEnableOption
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mkIf
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mapAttrsToList
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attrNames
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map
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concatLines
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mkOption
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types
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;
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cfg = config.our.buildMachines;
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others = filterAttrs (n: v: n != config.networking.hostName) self.nixosConfigurations;
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mkBuilder =
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hostName: attrs:
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let
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config' = attrs.config;
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cfg' = config'.our.buildMachines;
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pkgs' = attrs.pkgs;
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in
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mkIf cfg'.enable {
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hostName = hostName;
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sshUser = "remotebuild";
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# CPU architecture of the builder, and the operating system it runs.
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# If your builder supports multiple architectures
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# (e.g. search for "binfmt" for emulation),
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systems = [ pkgs'.system ] ++ config'.boot.binfmt.emulatedSystems;
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# Nix custom ssh-variant that avoids lots of "trusted-users" settings pain
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protocol = "ssh-ng";
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# default is 1 but may keep the builder idle in between builds
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maxJobs = 3;
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speedFactor = cfg'.speedFactor - (cfg.speedFactor) + 1;
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supportedFeatures = cfg'.supportedFeatures;
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mandatoryFeatures = [ ];
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};
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buildMachines = mapAttrsToList mkBuilder others;
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remotebuildKeys = mapAttrsToList (
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_name: attrs: attrs.config.clan.core.vars.generators.openssh.files."ssh.id_ed25519.pub".value
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) others;
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in
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{
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options.our.buildMachines = {
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enable = mkEnableOption "Use this machine as a remoteBuilder for others and vice versa.";
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supportedFeatures = mkOption {
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type = types.listOf (
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types.oneOf [
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"nixos-test"
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"benchmark"
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"big-parallel"
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"kvm"
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]
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);
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default = [ ];
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description = ''
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kvm | Everything which builds inside a vm, like NixOS tests
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nixos-test | Machine can run NixOS tests
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big-parallel | kernel config, libreoffice, evolution, llvm and chromium
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benchmark | Machine can generate metrics (means the builds usually takes the same amount of time)
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'';
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};
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speedFactor = mkOption {
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type = types.int;
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default = 1;
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description = "How fast is the builder compared to your local machine";
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};
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};
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config = mkIf cfg.enable {
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users.users.remotebuild = {
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isNormalUser = true;
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createHome = false;
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group = "remotebuild";
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openssh.authorizedKeys.keys = remotebuildKeys;
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};
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users.groups.remotebuild = { };
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programs.ssh.extraConfig = ''
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Match User remotebuild
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IdentityFile ${config.clan.core.vars.generators.openssh.files."ssh.id_ed25519".path}
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'';
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nix = {
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buildMachines = buildMachines;
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# required, otherwise remote buildMachines above aren't used
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distributedBuilds = true;
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# optional, useful when the builder has a faster internet connection than yours
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settings = {
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builders-use-substitutes = true;
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trusted-users = [ "remotebuild" ];
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};
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};
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};
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}
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