Updated hypervisor input

modules/buildbot/default.nix

@@ -0,0 +1,57 @@
+{ lib, pkgs, config, ... }:
+with lib;
+let
+  cfg = config.luj.buildbot;
+  port = "1810";
+  package = pkgs.buildbot-worker;
+  python = package.pythonModule;
+  home = "/var/lib/buildbot-worker";
+  buildbotDir = "${home}/worker";
+in
+{
+  #buildbot worker
+
+  nix.settings.allowed-users = [ "buildbot-worker" ];
+  users.users.buildbot-worker = {
+    description = "Buildbot Worker User.";
+    isSystemUser = true;
+    createHome = true;
+    home = "/var/lib/buildbot-worker";
+    group = "buildbot-worker";
+    useDefaultShell = true;
+  };
+  users.groups.buildbot-worker = { };
+
+  systemd.services.buildbot-worker = {
+    reloadIfChanged = true;
+    description = "Buildbot Worker.";
+    after = [ "network.target" "buildbot-master.service" ];
+    wantedBy = [ "multi-user.target" ];
+    path = [
+      pkgs.unstable.nix-eval-jobs
+      pkgs.git
+      pkgs.gh
+      pkgs.nix
+      pkgs.nix-output-monitor
+    ];
+    environment.PYTHONPATH = "${python.withPackages (_: [package])}/${python.sitePackages}";
+    environment.MASTER_URL = ''tcp:host=ci.julienmalka.me'';
+    environment.BUILDBOT_DIR = buildbotDir;
+    environment.WORKER_PASSWORD_FILE = "/var/lib/buildbot-worker/password.txt";
+
+    serviceConfig = {
+      Type = "simple";
+      User = "buildbot-worker";
+      Group = "buildbot-worker";
+      WorkingDirectory = home;
+
+      # Restart buildbot with a delay. This time way we can use buildbot to deploy itself.
+      ExecReload = "+${pkgs.systemd}/bin/systemd-run --on-active=60 ${pkgs.systemd}/bin/systemctl restart buildbot-worker";
+      ExecStart = "${python.pkgs.twisted}/bin/twistd --nodaemon --pidfile= --logfile - --python ${./worker.py}";
+    };
+  };
+
+}
+
+
+

modules/buildbot/worker.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+
+import multiprocessing
+import os
+import socket
+from io import open
+
+from buildbot_worker.bot import Worker
+from twisted.application import service
+
+
+def require_env(key: str) -> str:
+    val = os.environ.get(key)
+    assert val is not None, "val is not set"
+    return val
+
+
+def setup_worker(application: service.Application, id: int) -> None:
+    basedir = f"{require_env('BUILDBOT_DIR')}-{id}"
+    os.makedirs(basedir, mode=0o700, exist_ok=True)
+
+    master_url = require_env("MASTER_URL")
+    hostname = socket.gethostname()
+    workername = f"{hostname}-{id}"
+
+    with open(
+        require_env("WORKER_PASSWORD_FILE"), "r", encoding="utf-8"
+    ) as passwd_file:
+        passwd = passwd_file.read().strip("\r\n")
+    keepalive = 600
+    umask = None
+    maxdelay = 300
+    numcpus = None
+    allow_shutdown = None
+
+    s = Worker(
+        None,
+        None,
+        workername,
+        passwd,
+        basedir,
+        keepalive,
+        connection_string=master_url,
+        umask=umask,
+        maxdelay=maxdelay,
+        numcpus=numcpus,
+        allow_shutdown=allow_shutdown,
+    )
+    s.setServiceParent(application)
+
+
+# note: this line is matched against to check that this is a worker
+# directory; do not edit it.
+application = service.Application("buildbot-worker")
+
+for i in range(14):
+    setup_worker(application, i)
+
+