e8a88f8f15
The overlay will break if buildbot in unstable will change it's python override in nixpkgs. This will happen in the next release when sqlalchemy will be update. Also I have at least three installations where I share nixpkgs instances across multiple nixos configuration for performance reasons, where I cannot use overlays defined in a NixOS module.
101 lines
3.4 KiB
Nix
101 lines
3.4 KiB
Nix
{ config
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, pkgs
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, lib
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, ...
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}:
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let
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cfg = config.services.buildbot-nix.worker;
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home = "/var/lib/buildbot-worker";
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buildbotDir = "${home}/worker";
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python = cfg.package.pythonModule;
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in
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{
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_file = ./worker.nix;
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options = {
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services.buildbot-nix.worker = {
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enable = lib.mkEnableOption "buildbot-worker";
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name = lib.mkOption {
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type = lib.types.str;
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default = config.networking.hostName;
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description = "The buildbot worker name.";
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};
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package = lib.mkOption {
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type = lib.types.package;
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default = pkgs.buildbot-worker;
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defaultText = "pkgs.buildbot-worker";
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description = "The buildbot-worker package to use.";
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};
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masterUrl = lib.mkOption {
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type = lib.types.str;
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default = "tcp:host=localhost:port=9989";
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description = "The buildbot master url.";
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};
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workerPasswordFile = lib.mkOption {
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type = lib.types.path;
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description = "The buildbot worker password file.";
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};
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};
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};
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config = lib.mkIf cfg.enable {
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nix.settings.extra-allowed-users = [ "buildbot-worker" ];
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# Allow buildbot-worker to create gcroots
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systemd.tmpfiles.rules = [
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"d /nix/var/nix/gcroots/per-user/${config.users.users.buildbot-worker.name} 0755 ${config.users.users.buildbot-worker.name} root - -"
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];
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users.users.buildbot-worker = {
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description = "Buildbot Worker User.";
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isSystemUser = true;
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createHome = true;
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inherit home;
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group = "buildbot-worker";
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useDefaultShell = true;
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};
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users.groups.buildbot-worker = { };
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systemd.services.buildbot-worker = {
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reloadIfChanged = true;
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description = "Buildbot Worker.";
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after = [ "network.target" "buildbot-master.service" ];
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wantedBy = [ "multi-user.target" ];
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path = [
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pkgs.cachix
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pkgs.git
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pkgs.openssh
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pkgs.nix
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pkgs.nix-eval-jobs
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];
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environment.PYTHONPATH = "${python.withPackages (_: [cfg.package])}/${python.sitePackages}";
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environment.MASTER_URL = cfg.masterUrl;
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environment.BUILDBOT_DIR = buildbotDir;
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serviceConfig = {
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# We rather want the CI job to fail on OOM than to have a broken buildbot worker.
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# Otherwise we might end up restarting the worker and the same job is run again.
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OOMPolicy = "continue";
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LoadCredential = [ "worker-password-file:${cfg.workerPasswordFile}" ];
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Environment = [
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"WORKER_PASSWORD_FILE=%d/worker-password-file"
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"WORKER_NAME=${cfg.name}"
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];
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Type = "simple";
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User = "buildbot-worker";
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Group = "buildbot-worker";
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WorkingDirectory = "/var/lib/buildbot-worker";
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# Restart buildbot with a delay. This time way we can use buildbot to deploy itself.
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ExecReload = "+${config.systemd.package}/bin/systemd-run --on-active=60 ${config.systemd.package}/bin/systemctl restart buildbot-worker";
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ExecStart = lib.traceIf
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(lib.versionOlder pkgs.buildbot-worker.version "4.0.0")
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''
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`buildbot-nix` recommends `buildbot-worker` to be at least of version `4.0.0`.
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Consider upgrading by setting `services.buildbot-nix.worker.package` i.e. from nixpkgs-unstable.
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''
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"${python.pkgs.twisted}/bin/twistd --nodaemon --pidfile= --logfile - --python ${../buildbot_nix}/worker.py";
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};
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};
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};
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}
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