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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.krebs.github-hosts-sync;
out = {
options.krebs.github-hosts-sync = api;
config = lib.mkIf cfg.enable imp;
};
api = {
enable = mkEnableOption "krebs.github-hosts-sync";
dataDir = mkOption {
type = types.str; # TODO path (but not just into store)
default = "/var/lib/github-hosts-sync";
};
srcDir = mkOption {
type = types.str;
default = "${config.krebs.tinc.retiolum.confDir}/hosts";
defaultText = "\${config.krebs.tinc.retiolum.confDir}/hosts";
};
ssh-identity-file = mkOption {
type = types.suffixed-str [".ssh.id_ed25519" ".ssh.id_rsa"];
default = "${config.krebs.secret.directory}/github-hosts-sync.ssh.id_ed25519";
defaultText = "‹secrets/github-hosts-sync.ssh.id_ed25519›";
};
url = mkOption {
type = types.str;
default = "git@github.com:krebs/hosts.git";
};
workTree = mkOption {
type = types.absolute-pathname;
default = "${cfg.dataDir}/cache";
};
};
imp = {
systemd.services.github-hosts-sync = {
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
environment = {
GITHUB_HOST_SYNC_USER_MAIL = user.mail;
GITHUB_HOST_SYNC_USER_NAME = user.name;
GITHUB_HOST_SYNC_SRCDIR = cfg.srcDir;
GITHUB_HOST_SYNC_WORKTREE = cfg.workTree;
GITHUB_HOST_SYNC_URL = cfg.url;
};
serviceConfig = {
PermissionsStartOnly = "true";
SyslogIdentifier = "github-hosts-sync";
User = user.name;
Type = "oneshot";
RemainAfterExit = true;
ExecStartPre = pkgs.writeDash "github-hosts-sync-init" ''
set -euf
install -m 0711 -o ${user.name} -d ${cfg.dataDir}
install -m 0700 -o ${user.name} -d ${cfg.dataDir}/.ssh
install -m 0400 -o ${user.name} \
${cfg.ssh-identity-file} \
${cfg.dataDir}/.ssh/${fileExtension cfg.ssh-identity-file}
'';
ExecStart = "${pkgs.github-hosts-sync}/bin/github-hosts-sync";
};
};
users.users.${user.name} = {
inherit (user) uid;
group = user.name;
home = cfg.dataDir;
isSystemUser = true;
};
};
users.groups.${user.name} = {};
user = rec {
mail = "${name}@${config.krebs.build.host.name}";
name = "github-hosts-sync";
uid = genid_uint31 name;
};
# TODO move to lib?
fileExtension = s: last (splitString "." s);
in out
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