{ config, pkgs, lib, ... }: with lib; let cfg = config.services.skynet_gitlab_runner; in { imports = [ ]; options.services.skynet_gitlab_runner = { enable = mkEnableOption "Skynet Gitlab Runner"; runner = { name = mkOption { type = types.str; }; gitlab = mkOption { default = "https://gitlab.skynet.ie"; type = types.str; }; description = mkOption { default = cfg.runner.name; type = types.str; }; docker = { image = mkOption { default = "alpine:latest"; type = types.str; }; cleanup_dates = mkOption { # https://man.archlinux.org/man/systemd.time.7#CALENDAR_EVENTS # it will use a lot of storage so clear it daily, may change to hourly if required default = "daily"; type = types.str; }; }; }; }; config = mkIf cfg.enable { # https://search.nixos.org/options?from=0&size=50&sort=alpha_desc&type=packages&query=services.gitlab-runner. environment.systemPackages = [ pkgs.gitlab-runner ]; age.secrets.runner_01_nix.file = ../secrets/gitlab/runners/runner01.age; age.secrets.runner_02_general.file = ../secrets/gitlab/runners/runner02.age; boot.kernel.sysctl."net.ipv4.ip_forward" = true; # 1 # taken from https://github.com/NixOS/nixpkgs/issues/245365#issuecomment-1663854128 virtualisation.docker.listenOptions = [ "/run/docker.sock" "127.0.0.1:2375" ]; services.gitlab-runner = { enable = true; clear-docker-cache = { enable = true; dates = cfg.runner.docker.cleanup_dates; }; services = { # might make a function later to have multiple runners, might never need it though runner_nix = { cloneUrl = cfg.runner.gitlab; description = "For Nix only"; registrationFlags = [ "--docker-host" "tcp://127.0.0.1:2375" ]; registrationConfigFile = config.age.secrets.runner_01_nix.path; dockerImage = cfg.runner.docker.image; # from https://nixos.wiki/wiki/Gitlab_runner dockerVolumes = [ "/nix/store:/nix/store:ro" "/nix/var/nix/db:/nix/var/nix/db:ro" "/nix/var/nix/daemon-socket:/nix/var/nix/daemon-socket:ro" ]; dockerDisableCache = true; preBuildScript = pkgs.writeScript "setup-container" '' mkdir -p -m 0755 /nix/var/log/nix/drvs mkdir -p -m 0755 /nix/var/nix/gcroots mkdir -p -m 0755 /nix/var/nix/profiles mkdir -p -m 0755 /nix/var/nix/temproots mkdir -p -m 0755 /nix/var/nix/userpool mkdir -p -m 1777 /nix/var/nix/gcroots/per-user mkdir -p -m 1777 /nix/var/nix/profiles/per-user mkdir -p -m 0755 /nix/var/nix/profiles/per-user/root mkdir -p -m 0700 "$HOME/.nix-defexpr" . ${pkgs.nix}/etc/profile.d/nix-daemon.sh ${pkgs.nix}/bin/nix-channel --add https://nixos.org/channels/nixos-unstable nixpkgs # 3 ${pkgs.nix}/bin/nix-channel --update nixpkgs ${pkgs.nix}/bin/nix-env -i ${concatStringsSep " " (with pkgs; [ nix cacert git openssh ])} ''; environmentVariables = { ENV = "/etc/profile"; USER = "root"; NIX_REMOTE = "daemon"; PATH = "/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/bin:/sbin:/usr/bin:/usr/sbin"; NIX_SSL_CERT_FILE = "/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"; }; tagList = [ "nix" ]; }; runner_general = { cloneUrl = cfg.runner.gitlab; description = "General Runner"; registrationFlags = [ "--docker-host" "tcp://127.0.0.1:2375" ]; registrationConfigFile = config.age.secrets.runner_02_general.path; dockerImage = cfg.runner.docker.image; }; }; }; }; }