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nix: add hive-matrix module + hyperhive.domain option (#548 part 1)

This commit is contained in:
damocles 2026-05-29 01:25:29 +02:00
commit 2b1c1b54ac
3 changed files with 259 additions and 4 deletions

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@ -197,10 +197,18 @@ nix/
modules/hive-c0re.nix systemd service + firewall + git wiring;
`contextWindowTokens` attrset (per-model,
injected as env vars into all containers);
imports hive-forge.nix
top-level `hyperhive.domain` option
(nullable; required when matrix.enable);
imports hive-forge.nix + hive-matrix.nix
modules/hive-forge.nix optional in-container Forgejo
(`hyperhive.forge.enable`, default on);
Catppuccin Mocha theme via tmpfiles C+ copy
modules/hive-matrix.nix optional in-container matrix-tuwunel
homeserver (`hyperhive.matrix.enable`,
default off); server_name derives from
`hyperhive.domain` (subdomain by default);
federation on (empty trusted_servers),
registration off, e2ee deferred (#551)
templates/harness-base.nix shared scaffolding for sub-agents + manager;
`hyperhive.model` option (HIVE_DEFAULT_MODEL)
templates/agent-base.nix sub-agent nixosConfiguration

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@ -17,8 +17,32 @@ in
{
# The forge is part of the standard install — hive-c0re mirrors
# every agent's applied config repo into it. On by default; opt out
# with `hyperhive.forge.enable = false`.
imports = [ ./hive-forge.nix ];
# with `hyperhive.forge.enable = false`. hive-matrix is opt-in (off
# by default) and asserts that `hyperhive.domain` is set before it
# can be enabled.
imports = [
./hive-forge.nix
./hive-matrix.nix
];
# Top-level option shared by any hyperhive subsystem that needs a
# stable hostname (matrix server_name today, forge ROOT_URL likely
# next). Type is nullable + default null so existing operator
# configs that don't set it still evaluate; subsystems that
# actually need it (matrix) assert non-null in their own config
# block with a helpful message.
options.hyperhive.domain = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
example = "darkest.space";
description = ''
Canonical host domain for hyperhive subsystems that need a
stable name (currently: `hyperhive.matrix.serverName` derives
from this when `useSubdomain = true`). No default — subsystems
that opt to require it assert non-null in their own config and
fail eval with a helpful message if it's missing.
'';
};
options.services.hive-c0re = {
enable = lib.mkEnableOption "hive-c0re — hyperhive coordinator daemon";
@ -171,7 +195,8 @@ in
# serves this via `tower_http::ServeDir` for any path it doesn't
# match against an API/action route.
HIVE_STATIC_DIR = "${cfg.frontend}/dashboard";
} // lib.optionalAttrs config.hyperhive.forge.enable {
}
// lib.optionalAttrs config.hyperhive.forge.enable {
# Agents poll this URL for Forgejo notifications. Derived from
# hyperhive.forge.{domain,httpPort} so it tracks forge config changes.
HIVE_FORGE_URL = "http://${config.hyperhive.forge.domain}:${toString config.hyperhive.forge.httpPort}";

222
nix/modules/hive-matrix.nix Normal file
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@ -0,0 +1,222 @@
{
pkgs,
lib,
config,
...
}:
let
cfg = config.hyperhive.matrix;
hyperhiveDomain = config.hyperhive.domain;
effectiveServerName =
if cfg.serverName != null then
cfg.serverName
else if cfg.useSubdomain then
"matrix.${hyperhiveDomain}"
else
hyperhiveDomain;
in
{
# Private Matrix homeserver (matrix-tuwunel — the official conduwuit
# successor) for hyperhive agents, wrapped in a nixos-container so it
# doesn't fight any existing `services.matrix-*` the operator may
# already run on the host. Same shape as `nix/modules/hive-forge.nix`:
# shared host netns (`privateNetwork = false`) so agents reach it at
# `http://localhost:<httpPort>` (or via the configured server_name
# for federation), nixos-container only here for state + systemd-unit
# isolation.
#
# Container name `hive-matrix` (not `h-*`) so the lifecycle scanner
# ignores it; operator manages via the standard `nixos-container` CLI.
#
# Persistent state at `/var/lib/nixos-containers/hive-matrix/var/lib/
# matrix-tuwunel/` (survives container restart / host reboot). To
# wipe, destroy the container.
#
# Initial rollout (#548): federation enabled (needed for multi-hive
# swarms; trusted_servers starts empty so no actual federation traffic
# leaves until peers are explicitly listed), registration via admin
# API only, e2ee disabled per operator call (tracked for follow-up at
# #551).
options.hyperhive.matrix = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Run hive-matrix — a private matrix-tuwunel homeserver (in a
nixos-container) for hyperhive agents. Off by default while
the integration phases in; flip to `true` once the operator
has set `hyperhive.domain` and is ready to onboard agents.
'';
};
package = lib.mkOption {
type = lib.types.package;
default = pkgs.matrix-tuwunel;
defaultText = lib.literalExpression "pkgs.matrix-tuwunel";
description = ''
matrix-tuwunel package to run inside the container. Defaults
to nixpkgs's `pkgs.matrix-tuwunel`. Override to pin a
specific upstream if you need an unreleased feature.
'';
};
serverName = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
example = "matrix.darkest.space";
description = ''
Matrix `server_name` — the host part of every user ID
(`@argus:<server_name>`) and room ID minted on this
homeserver. CRITICAL: must be stable from day one because
it's embedded irrevocably in the identifiers. Defaults to
`matrix.''${hyperhive.domain}` when `useSubdomain = true`
(the typical path — keeps the root domain free for the
dashboard or forge), or to `''${hyperhive.domain}` itself
when `useSubdomain = false`. Override here only if you need
a name that doesn't follow either pattern.
'';
};
useSubdomain = lib.mkOption {
type = lib.types.bool;
default = true;
description = ''
When `serverName` is unset, use `matrix.''${hyperhive.domain}`
rather than `''${hyperhive.domain}` itself. The default is
true because the root domain is usually claimed by the
dashboard or the forge; turn off only if the root domain is
free AND you want matrix to serve from there.
'';
};
httpPort = lib.mkOption {
type = lib.types.port;
default = 8008;
description = ''
TCP port tuwunel serves the matrix client-server API on.
Default 8008 is the matrix-spec well-known port. Sits
outside hyperhive's claimed ranges (dashboard 7000, manager
8000, sub-agents 8100..8999). Federation listens on
`federationPort` separately.
'';
};
federationPort = lib.mkOption {
type = lib.types.port;
default = 8448;
description = ''
TCP port tuwunel serves the matrix server-server (federation)
API on. Default 8448 is the matrix-spec well-known port.
Open in the host firewall when `openFirewall = true`; needed
for multi-hive swarms to talk to each other.
'';
};
openFirewall = lib.mkOption {
type = lib.types.bool;
default = true;
description = ''
Open `httpPort` + `federationPort` in the host firewall. Off
when the homeserver should only be reachable from inside the
host (e.g. while bringing the integration up before
announcing it to other hives).
'';
};
trustedServers = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ ];
example = [ "matrix.org" ];
description = ''
List of trusted matrix servers (homeservers whose signing
keys this server will fetch identity-server-style). Empty
by default — federation is enabled at the protocol level
but no peer is trusted until listed here, so the homeserver
is effectively closed until the operator declares hive
peers explicitly.
'';
};
maxRequestSize = lib.mkOption {
type = lib.types.str;
default = "20000000";
description = ''
Maximum size in bytes of a single matrix client request body.
Default 20 MB matches the matrix-spec recommendation for
media uploads. String-typed to match tuwunel's TOML config
shape (it accepts both integer + size-with-suffix strings).
'';
};
};
config = lib.mkIf cfg.enable {
# mara on #548: "there is no default, but it is required. add
# assertion." — fail eval with a helpful message rather than
# spawning a homeserver with a bogus server_name we can never
# change later. `hyperhive.domain` is host-wide; matrix derives
# the server_name from it (or from `cfg.serverName` if the
# operator wants to override).
assertions = [
{
assertion = hyperhiveDomain != null || cfg.serverName != null;
message = ''
hyperhive.matrix.enable = true requires either:
- hyperhive.domain set to your host's canonical domain
(recommended; shared with forge / dashboard), or
- hyperhive.matrix.serverName set explicitly.
The matrix server_name is embedded into every user ID and
room ID on this homeserver — it cannot be changed later
without losing every account and chat history. Pick a
stable hostname before enabling.
'';
}
];
containers.hive-matrix = {
autoStart = true;
ephemeral = false;
# Share host netns — tuwunel's listeners look exactly like
# host-side services, no port-forward plumbing, and agent
# containers (also host netns) reach it via plain `localhost`.
privateNetwork = false;
config =
{ ... }:
{
system.stateVersion = "25.11";
services.matrix-tuwunel = {
enable = true;
package = cfg.package;
settings.global = {
server_name = effectiveServerName;
address = "0.0.0.0";
port = cfg.httpPort;
max_request_size = cfg.maxRequestSize;
# Federation enabled at the protocol level so swarms
# can be wired up later by extending `trustedServers`
# without a homeserver restart. Empty trusted_servers
# keeps it effectively closed until peers are listed.
allow_federation = true;
trusted_servers = cfg.trustedServers;
# Registration off — operator seeds agent accounts via
# the tuwunel admin API (mirrors the forge pattern;
# see `hive-c0re/src/matrix.rs` once #548 PR 2 lands).
allow_registration = false;
# E2EE disabled in initial rollout per operator call
# (#548) — re-enabling tracked at #551.
allow_encryption = false;
};
};
environment.systemPackages = [ cfg.package ];
};
};
networking.firewall = lib.mkIf cfg.openFirewall {
allowedTCPPorts = [
cfg.httpPort
cfg.federationPort
];
};
};
}