{ depot, lib, ... }: let inherit (builtins) listToAttrs; inherit (lib) range; nixpkgs = import depot.third_party.nixpkgsSrc {}; # All Buildkite hooks are actually besadii, but it's being invoked # with different names. buildkiteHooks = depot.third_party.runCommandNoCC "buildkite-hooks" {} '' mkdir -p $out/bin ln -s ${depot.ops.besadii}/bin/besadii $out/bin/post-command ''; in lib.fix(self: { inherit depot; imports = [ "${depot.depotPath}/ops/nixos/clbot.nix" "${depot.depotPath}/ops/nixos/depot.nix" "${depot.depotPath}/ops/nixos/monorepo-gerrit.nix" "${depot.depotPath}/ops/nixos/smtprelay.nix" "${depot.depotPath}/ops/nixos/sourcegraph.nix" "${depot.depotPath}/ops/nixos/tvl-slapd/default.nix" "${depot.depotPath}/ops/nixos/tvl-sso/default.nix" "${depot.depotPath}/ops/nixos/www/cl.tvl.fyi.nix" "${depot.depotPath}/ops/nixos/www/code.tvl.fyi.nix" "${depot.depotPath}/ops/nixos/www/cs.tvl.fyi.nix" "${depot.depotPath}/ops/nixos/www/login.tvl.fyi.nix" "${depot.depotPath}/ops/nixos/www/todo.tvl.fyi.nix" "${depot.depotPath}/ops/nixos/www/tvl.fyi.nix" "${depot.third_party.nixpkgsSrc}/nixos/modules/services/web-apps/gerrit.nix" ]; hardware = { enableRedistributableFirmware = true; cpu.amd.updateMicrocode = true; }; boot = { tmpOnTmpfs = true; kernelModules = [ "kvm-amd" ]; supportedFilesystems = [ "zfs" ]; initrd = { availableKernelModules = [ "igb" "xhci_pci" "nvme" "ahci" "usbhid" "usb_storage" "sr_mod" ]; # Enable SSH in the initrd so that we can enter disk encryption # passwords remotely. network = { enable = true; ssh = { enable = true; port = 2222; authorizedKeys = [ depot.users.tazjin.keys.frog ]; hostKeys = [ /etc/secrets/initrd_host_ed25519_key ]; }; # this will launch the zfs password prompt on login and kill the # other prompt postCommands = '' echo "zfs load-key -a && killall zfs" >> /root/.profile ''; }; }; loader.grub = { enable = true; version = 2; efiSupport = true; efiInstallAsRemovable = true; device = "/dev/disk/by-id/nvme-SAMSUNG_MZQLB1T9HAJR-00007_S439NA0N201620"; }; zfs.requestEncryptionCredentials = true; }; fileSystems = { "/" = { device = "zroot/root"; fsType = "zfs"; }; "/boot" = { device = "/dev/disk/by-uuid/073E-7FBD"; fsType = "vfat"; }; "/nix" = { device = "zroot/nix"; fsType = "zfs"; }; "/home" = { device = "zroot/home"; fsType = "zfs"; }; }; networking = { # Glass is boring, but Luke doesn't like Wapping - the Prospect of # Whitby, however, is quite a pleasant establishment. hostName = "whitby"; domain = "tvl.fyi"; hostId = "b38ca543"; useDHCP = false; # Don't use Hetzner's DNS servers. nameservers = [ "8.8.8.8" "8.8.4.4" ]; defaultGateway6 = { address = "fe80::1"; interface = "enp196s0"; }; firewall.allowedTCPPorts = [ 22 80 443 4238 29418 ]; interfaces.enp196s0.useDHCP = true; interfaces.enp196s0.ipv6.addresses = [ { address = "2a01:04f8:0242:5b21::feed:edef:beef"; prefixLength = 64; } ]; }; # Generate an immutable /etc/resolv.conf from the nameserver settings # above (otherwise DHCP overwrites it): environment.etc."resolv.conf" = with lib; { source = depot.third_party.writeText "resolv.conf" '' ${concatStringsSep "\n" (map (ns: "nameserver ${ns}") self.networking.nameservers)} options edns0 ''; }; time.timeZone = "UTC"; nix = { maxJobs = lib.mkDefault 64; extraOptions = '' secret-key-files = /etc/secrets/nix-cache-privkey ''; trustedUsers = [ "grfn" "lukegb" ]; sshServe = { enable = true; keys = with depot.users; tazjin.keys.all ++ lukegb.keys.all ++ [ glittershark.keys.whitby ]; }; }; programs.mtr.enable = true; services.openssh.enable = true; # Run a handful of Buildkite agents to support parallel builds. services.buildkite-agents = listToAttrs (map (n: rec { name = "whitby-${toString n}"; value = { inherit name; enable = true; tokenPath = "/etc/secrets/buildkite-agent-token"; hooks.post-command = "${buildkiteHooks}/bin/post-command"; }; }) (range 1 8)); # Start a local SMTP relay to Gmail (used by gerrit) services.depot.smtprelay = { enable = true; args = { listen = ":2525"; remote_host = "smtp.gmail.com:587"; remote_auth = "plain"; remote_user = "tvlbot@tazj.in"; }; }; # Start the Gerrit->IRC bot services.depot.clbot = { enable = true; # Almost all configuration values are already correct (well, duh), # see //fun/clbot for details. flags = { gerrit_host = "cl.tvl.fyi:29418"; gerrit_ssh_auth_username = "clbot"; gerrit_ssh_auth_key = "/etc/secrets/clbot-key"; irc_server = "qwerty.zxcvbnm.ninja:6697"; notify_branches = "canon,refs/meta/config"; notify_repo = "depot"; # This secret is read from an environment variable, which is # populated from /etc/secrets/clbot irc_pass = "$CLBOT_PASS"; }; }; # Run a SourceGraph code search instance services.depot.sourcegraph.enable = true; environment.systemPackages = with nixpkgs; [ bb curl emacs-nox git htop nano vim zfs zfstools ]; # Run cgit for the depot. The onion here is nginx(thttpd(cgit)). systemd.services.cgit = { wantedBy = [ "multi-user.target" ]; script = "${depot.web.cgit-taz}/bin/cgit-launch"; serviceConfig = { Restart = "on-failure"; User = "git"; Group = "git"; }; }; # Regularly back up Gerrit to Google Cloud Storage. systemd.services.restic-gerrit = { description = "Gerrit backups to Google Cloud Storage"; script = "${nixpkgs.restic}/bin/restic backup /var/lib/gerrit"; serviceConfig.User = "git"; environment = { GOOGLE_PROJECT_ID = "tazjins-infrastructure"; GOOGLE_APPLICATION_CREDENTIALS = "/var/lib/git/restic/gcp-key.json"; RESTIC_REPOSITORY = "gs:tvl-fyi-backups:/whitby"; RESTIC_PASSWORD_FILE = "/var/lib/git/restic/secret"; RESTIC_EXCLUDE_FILE = builtins.toFile "exclude-files" '' /var/lib/gerrit/tmp ''; }; }; systemd.timers.restic-gerrit = { wantedBy = [ "multi-user.target" ]; timerConfig.OnCalendar = "hourly"; }; security.sudo.extraRules = [ { groups = ["wheel"]; commands = [{ command = "ALL"; options = ["NOPASSWD"]; }]; } ]; users = { users.root.openssh.authorizedKeys.keys = [ depot.users.tazjin.keys.frog ]; users.tazjin = { isNormalUser = true; extraGroups = [ "git" "wheel" ]; openssh.authorizedKeys.keys = depot.users.tazjin.keys.all; }; users.lukegb = { isNormalUser = true; extraGroups = [ "git" "wheel" ]; openssh.authorizedKeys.keys = depot.users.lukegb.keys.all; }; users.grfn = { isNormalUser = true; extraGroups = [ "git" "wheel" ]; openssh.authorizedKeys.keys = [ depot.users.glittershark.keys.whitby ]; }; users.isomer = { isNormalUser = true; extraGroups = [ "git" ]; openssh.authorizedKeys.keys = depot.users.isomer.keys.all; }; users.riking = { isNormalUser = true; extraGroups = [ "git" ]; openssh.authorizedKeys.keys = depot.users.riking.keys.u2f ++ depot.users.riking.keys.passworded; }; users.qyliss = { isNormalUser = true; extraGroups = [ "git" ]; openssh.authorizedKeys.keys = depot.users.qyliss.keys.all; }; # Set up a user & group for git shenanigans groups.git = {}; users.git = { group = "git"; isNormalUser = false; createHome = true; home = "/var/lib/git"; }; }; security.acme = { acceptTerms = true; email = "mail@tazj.in"; }; system.stateVersion = "20.03"; })