hyperhive/nix/agent-modules/claude-settings.nix

450 lines
20 KiB
Nix

# Everything that shapes claude-code's own configuration inside the
# container: the managed settings json (base env + OTEL), the
# onboarding/trust seed, the runtime OTEL auth-header injection, and
# the plugin/marketplace install lists the harness reads at boot.
{
pkgs,
lib,
config,
...
}:
let
userName = config.hyperhive.user.name;
homeDir = "/home/${userName}";
# Hive-wide OpenTelemetry config (host-driven; baked in per-agent by
# meta.rs `otel_config`).
otelCfg = config.hyperhive.otel;
# Hive/swarm display names are forwarded into each agent's build by
# meta.rs as `environment.variables` (per-agent, build-time strings),
# so they can be baked into the resource attributes below without a
# runtime shell. Absent (option unset) → "unknown".
hiveDisplayName = config.environment.variables.HYPERHIVE_HIVE_NAME or "unknown";
swarmDisplayName = config.environment.variables.HYPERHIVE_SWARM_NAME or "unknown";
# Effective per-agent MemoryMax=, in bytes, injected by meta.rs's
# per-agent flake render (`hyperhive.claudeMemoryMaxBytes`). `null`
# when the effective cap is unbounded ("infinity") or a RAM
# percentage — see `resource_limits::effective_memory_bytes`.
memoryMaxBytes = config.hyperhive.claudeMemoryMaxBytes;
# Base claude-code environment applied to every agent regardless of OTEL.
# Shipped via the managed settings `env` block so claude and `hivectl
# choom` both inherit them without a launch wrapper.
baseClaudeEnv = {
# Suppress analytics, survey pings, and other non-essential outbound
# traffic — agents are headless and don't need any of that.
CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC = "1";
DO_NOT_TRACK = "1";
# Disable claude's self-update machinery; package management is nix's job.
DISABLE_AUTOUPDATER = "1";
DISABLE_UPDATES = "1";
# Keep plugin updates synchronized on install; prefer HTTPS for fetches.
CLAUDE_CODE_PLUGIN_PREFER_HTTPS = "1";
CLAUDE_CODE_SYNC_PLUGIN_INSTALL = "1";
FORCE_AUTOUPDATE_PLUGINS = "1";
# Suppress the "install GitHub app" prompt — not applicable in-hive.
DISABLE_INSTALL_GITHUB_APP_COMMAND = "1";
# Disable Anthropic's hosted claude.ai MCP servers; the hive supplies its own.
ENABLE_CLAUDEAI_MCP_SERVERS = "0";
# Resume an interrupted turn on reconnect (recovers from transient MCP flaps).
CLAUDE_CODE_RESUME_INTERRUPTED_TURN = "1";
# Use the simpler system prompt variant suited to headless operation.
CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT = "1";
# Tag remote-control sessions with "<hive>-<agent>" for identification.
CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX = "${hiveDisplayName}-${userName}";
}
# Bun/JavaScriptCore (the runtime under claude-code's `.claude-wrapped`
# binary) sizes its default heap ceiling off the container's visible
# `/proc/meminfo`, which under nspawn is the *host's* physical RAM, not
# the systemd `MemoryMax=` cgroup cap actually enforced on this
# container — the cap lives on the host's outer cgroup and is invisible
# from inside (confirmed: `/sys/fs/cgroup/memory.max` reads `max` at
# every level from in here). That mismatch lets JSC's heap grow well
# past the real wall before GC kicks in hard, causing choom sessions to
# hang. Pin JSC's ceiling to 75% of the *actual* effective cap instead,
# once it's known at build time.
// lib.optionalAttrs (memoryMaxBytes != null) {
BUN_JSC_forceRAMSize = toString (memoryMaxBytes * 75 / 100);
};
# OTEL environment Claude Code reads to export metrics/logs/traces.
# Shipped via the managed claude settings json (below), which claude
# auto-discovers for BOTH the harness turn-loop and `hivectl choom` —
# so telemetry parity is declarative, with no launch wrapper. The
# auth header (`otel.headersCredential`) is deliberately NOT included
# here: it's a secret and this file lives in the world-readable nix
# store. It's injected at *runtime* into the agent's `0600`
# `~/.claude/settings.json` by the `hive-otel-header` oneshot below
# (claude merges the `env` from the user settings on top of these
# managed ones), so the token is read from disk at start and never
# touches the store.
otelSettingsEnv = {
CLAUDE_CODE_ENABLE_TELEMETRY = "1";
# Attach feedback-survey data to the OTEL pipeline.
CLAUDE_CODE_ENABLE_FEEDBACK_SURVEY_FOR_OTEL = "1";
OTEL_METRICS_EXPORTER = "otlp";
OTEL_LOGS_EXPORTER = "otlp";
OTEL_TRACES_EXPORTER = "otlp";
OTEL_EXPORTER_OTLP_PROTOCOL = otelCfg.protocol;
OTEL_EXPORTER_OTLP_ENDPOINT = otelCfg.endpoint;
# Force CUMULATIVE temporality — Claude Code defaults to DELTA,
# which Prometheus/Mimir-family backends (incl. grafana-lgtm)
# silently drop without a deltatocumulative processor.
OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE = "cumulative";
OTEL_RESOURCE_ATTRIBUTES =
"service.name=hyperhive-agent,agent=${userName},hive=${hiveDisplayName},swarm=${swarmDisplayName}"
+ lib.optionalString (otelCfg.extraResourceAttributes != "") ",${otelCfg.extraResourceAttributes}";
# Include the Claude Code version label in emitted metrics.
OTEL_METRICS_INCLUDE_VERSION = "1";
}
// lib.optionalAttrs (otelCfg.metricIntervalMs != null) {
OTEL_METRIC_EXPORT_INTERVAL = toString otelCfg.metricIntervalMs;
};
in
{
# OTEL stats export is configured ONCE at host level via
# `services.hyperhive.otel.*` (see nix/host-modules/hive-c0re.nix) and
# injected into every agent's build by the meta-flake renderer
# (`hive-c0re/src/meta.rs::otel_config`). These per-agent options are
# the build-time implementation surface that injection writes into;
# they are not meant to be set directly in an agent.nix. Marked
# `internal` so the host option is the only documented operator knob.
options.hyperhive.otel = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
internal = true;
description = ''
Export this agent's Claude Code stats (token usage, cost, tool
calls) to an OTLP endpoint via Claude Code's built-in
OpenTelemetry. Each agent's harness exports directly to the
collector, so it keeps working even when hive-c0re is down.
Host-driven: set `services.hyperhive.otel.enable` instead.
'';
};
endpoint = lib.mkOption {
type = lib.types.str;
default = "";
internal = true;
description = ''
OTLP collector endpoint, set as `OTEL_EXPORTER_OTLP_ENDPOINT`.
Host-driven via `services.hyperhive.otel.endpoint`.
'';
};
protocol = lib.mkOption {
type = lib.types.enum [
"http/protobuf"
"http/json"
"grpc"
];
default = "http/protobuf";
internal = true;
description = ''
OTLP wire protocol, set as `OTEL_EXPORTER_OTLP_PROTOCOL`.
Host-driven via `services.hyperhive.otel.protocol`.
'';
};
headersCredential = lib.mkOption {
# `str`, not `path`: a `path`-typed *relative* literal (e.g.
# `./otel-headers`) is hash-copied into the world-readable nix store
# at eval time, which would defeat the whole point of this option.
# Keep it a string and require an absolute runtime path so the secret
# is only ever read from disk by systemd at start, never nix-stored.
type = lib.types.nullOr lib.types.str;
default = null;
internal = true;
description = ''
Absolute path to an operator-provided secret file whose contents
become `OTEL_EXPORTER_OTLP_HEADERS` (e.g.
`Authorization=Bearer <token>`). Host-driven via
`services.hyperhive.otel.headersCredential`.
The rest of the OTEL config ships in the world-readable managed
claude settings json, but the header is a secret, so it's handled
separately: hive-c0re forwards this file into the container's
systemd credential store, and the `hive-otel-header` oneshot
reads it at runtime (`LoadCredential`) and writes it into the
agent's `0600` `~/.claude/settings.json` `env` block. The token
is read from disk at start and never copied into the nix store or
the world-readable settings file.
'';
};
extraResourceAttributes = lib.mkOption {
type = lib.types.str;
default = "";
internal = true;
description = ''
Extra comma-separated entries appended to
`OTEL_RESOURCE_ATTRIBUTES` after the built-in
`service.name` / `agent` / `hive` / `swarm` labels.
Host-driven via `services.hyperhive.otel.extraResourceAttributes`.
'';
};
metricIntervalMs = lib.mkOption {
type = lib.types.nullOr lib.types.ints.positive;
default = null;
internal = true;
description = ''
Metric export interval in milliseconds, set as
`OTEL_METRIC_EXPORT_INTERVAL`. Null leaves Claude Code's 60s
default. Host-driven via `services.hyperhive.otel.metricIntervalMs`.
'';
};
debug = lib.mkOption {
type = lib.types.bool;
default = false;
internal = true;
description = ''
Emit OTEL SDK diagnostics to stderr (`CLAUDE_CODE_OTEL_DIAG_STDERR=1`).
Host-driven via `services.hyperhive.otel.debug`.
'';
};
};
# Build-time implementation surface for the JSC-heap-ceiling fix:
# meta.rs's per-agent flake render injects this from the effective
# `MemoryMax=` (per-agent `resource-limits.json` override, else the
# hive-wide `services.hyperhive.agentMemoryMax`) — see
# `resource_limits::effective_memory_bytes_from`. Not meant to be set
# directly in an agent.nix, same convention as `hyperhive.otel.*`
# above; the host option (or `hivectl agents set-resource-limits`) is
# the real operator knob, and this only reflects the value baked in at
# the agent's *last rebuild* — `set-resource-limits` still applies the
# cgroup cap live via a drop-in reload, but this derived heap ceiling
# needs a rebuild to pick up a new value.
options.hyperhive.claudeMemoryMaxBytes = lib.mkOption {
type = lib.types.nullOr lib.types.ints.positive;
default = null;
internal = true;
description = ''
Effective per-agent memory cap in bytes, when it's a plain
byte-size value (null for an unbounded or percentage-based cap).
Used to derive `BUN_JSC_forceRAMSize` in `baseClaudeEnv`.
'';
};
options.hyperhive.claudeMarketplaces = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [
"anthropics/claude-plugins-official"
"${config.hyperhive.packages.claude-plugins}"
];
defaultText = lib.literalMD ''
`[ "anthropics/claude-plugins-official" "''${hyperhive.packages.claude-plugins}" ]`
(the flake's own local-path plugin marketplace)
'';
example = [
"anthropics/claude-plugins-official"
"anthropics/claude-plugins-community"
];
description = ''
Claude Code plugin marketplaces to add at harness boot. Each
entry is passed to `claude plugin marketplace add <source>`
(`owner/repo`, full git URL, or local path). Idempotent
re-adding an existing marketplace is treated as success.
Required before `hyperhive.claudePlugins` entries that
reference a marketplace (e.g. `foo@claude-plugins-official`).
Rendered to `/etc/hyperhive/claude-marketplaces.json`.
Defaults to Anthropic's official marketplace plus hyperhive's
own `claude-plugins` nix package (see
`nix/packages/claude-plugins.nix`) a local-path marketplace
built as a plain nix store path, registered under the name
`hyperhive` (from its `marketplace.json`, not the store path
itself, so plugin specs stay stable across rebuilds). No forge
repo or git remote needed to ship a hive-authored skill; agents
get both marketplaces out of the box without any per-agent.nix
wiring.
'';
};
options.hyperhive.claudePlugins = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [
"skill-creator@claude-plugins-official"
"base@hyperhive"
];
example = [
"formatter@my-marketplace"
"thinking-tools@anthropics"
];
description = ''
Claude Code plugins to install at harness boot. Each entry is
passed verbatim to `claude plugin install <spec>` once per
container start, before the turn loop opens. `claude plugin
install` is expected to be idempotent, so reinstalling on every
boot is cheap. Failures log a warning but do not abort boot a
missing plugin is preferable to a non-serving agent. Rendered to
`/etc/hyperhive/claude-plugins.json`; the harness reads it via
`plugins::install_configured`.
Defaults to Anthropic's `skill-creator` (teaches an agent to
write, refine, and evaluate its own skills) plus hyperhive's own
`base` plugin one plugin bundling every skill that applies to
*all* agents regardless of role (currently just `state-hygiene`,
read-before-write + dated-archive discipline for durable
notes/state files; more all-agent skills land as additional
skills inside this same plugin, not new plugins a skill that
only some agents need gets its own specialized plugin instead).
Agents get both out of the box, matching the default
marketplaces above.
Note that a per-agent definition REPLACES this default rather
than extending it (ordinary NixOS list-option semantics, same as
`claudeMarketplaces`). An agent that wants extra plugins AND the
defaults should list both `skill-creator@claude-plugins-official`
and `base@hyperhive` alongside them.
'';
};
options.hyperhive.claudePluginsAutoUpdate = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
When true, the harness runs `claude plugin marketplace update`
before installing plugins at boot, pulling the latest index from
all configured marketplaces. Disabled by default most agents
want pinned plugin versions and the network round-trip adds to
boot time. Enable for agents that should always install the latest
available version of their plugins.
'';
};
config = {
environment.etc."hyperhive/claude-plugins.json".text =
builtins.toJSON config.hyperhive.claudePlugins;
environment.etc."hyperhive/claude-marketplaces.json".text =
builtins.toJSON config.hyperhive.claudeMarketplaces;
environment.etc."hyperhive/claude-plugins-auto-update.json".text =
builtins.toJSON config.hyperhive.claudePluginsAutoUpdate;
# Hive-enforced claude settings. claude-code auto-discovers managed
# settings at this canonical Linux path (precedence #1, read-only,
# un-overridable by user/project/CLI) — so the harness doesn't pass
# `--settings` or copy the blob per turn. effortLevel is
# deliberately NOT shipped here: effort is controlled live via the
# `--effort` CLI flag (HIVE_DEFAULT_EFFORT / the per-agent UI slider),
# which managed scope would otherwise override and lock.
# Hive-enforced settings merged with a per-agent `env` block at BUILD
# time via `jq` (not eval-time `readFile`, which would be import-from-
# derivation). The `env` block is always present: `baseClaudeEnv` sets
# behaviour flags and the remote-control session prefix for every agent;
# `otelSettingsEnv` is merged on top when OTEL is enabled. claude-code
# auto-discovers this file in every context (harness turn-loop AND
# `hivectl choom`) so no launch wrapper is needed.
environment.etc."claude-code/managed-settings.json".source =
let
baseSettings = "${config.hyperhive.packages.assets}/share/hyperhive/prompts/claude-settings.json";
# Merge base env (always) with OTEL env (when enabled). jq is always
# run — `baseClaudeEnv` contains per-agent values (e.g.
# CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX) that can't live in the
# static store asset.
allEnv =
baseClaudeEnv
// lib.optionalAttrs otelCfg.enable otelSettingsEnv
// lib.optionalAttrs (otelCfg.enable && otelCfg.debug) {
# SDK diagnostics — noisy; only on when services.hyperhive.otel.debug = true.
CLAUDE_CODE_OTEL_DIAG_STDERR = "1";
};
in
pkgs.runCommand "managed-settings.json" { nativeBuildInputs = [ pkgs.jq ]; } ''
jq --argjson env ${lib.escapeShellArg (builtins.toJSON allEnv)} \
'. + { env: $env }' ${baseSettings} > "$out"
'';
# Inject the OTEL auth header (a secret) into the agent's *user*
# claude settings at runtime, keeping it out of the world-readable
# managed settings json above and out of the nix store entirely.
# hive-c0re forwards the operator's `headersCredential` file into
# this container's systemd credential store; this oneshot reads it
# via `LoadCredential` at start and merges `OTEL_EXPORTER_OTLP_HEADERS`
# into `~/.claude/settings.json` (0600, agent-owned). claude layers
# the user `env` on top of the managed one, so both the harness
# turn-loop and `hivectl choom` (same agent user) pick it up. Ordering
# is best-effort (`before`, not a hard dep): if it fails the harness
# still starts and telemetry just exports unauthenticated.
systemd.services.hive-otel-header =
lib.mkIf (config.hyperhive.otel.enable && config.hyperhive.otel.headersCredential != null)
{
description = "Inject the OTEL auth header into the agent's claude user settings";
wantedBy = [ "multi-user.target" ];
before = [ "hive-agent.service" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
User = userName;
Group = userName;
LoadCredential = [ "otel-headers" ];
ExecStart = pkgs.writeShellScript "hive-otel-header" ''
set -eu
umask 077
hdr="$CREDENTIALS_DIRECTORY/otel-headers"
[ -r "$hdr" ] || exit 0
dir=${homeDir}/.claude
settings="$dir/settings.json"
mkdir -p "$dir"
base='{}'
[ -s "$settings" ] && base="$(cat "$settings")"
printf '%s' "$base" | ${pkgs.jq}/bin/jq \
--rawfile h "$hdr" \
'.env = ((.env // {}) + { OTEL_EXPORTER_OTLP_HEADERS: ($h | rtrimstr("\n")) })' \
> "$settings.tmp"
mv "$settings.tmp" "$settings"
chmod 0600 "$settings"
'';
};
};
# Seed claude's onboarding + per-project trust state once. claude only
# marks `hasCompletedOnboarding` (global) and the project trust dialog
# as accepted when run *interactively*; the harness only ever runs it
# headless (`--print`) and `claude auth login` doesn't set them either.
# So the first interactive launch (`hivectl choom`) would drop the
# operator into the onboarding/trust walkthrough despite valid OAuth
# creds. This oneshot is the single place hyperhive touches
# `~/.claude.json`: it runs before the harness (so nothing races it),
# is idempotent (skips when the flags are already set), and is
# best-effort (`before`, not a hard dep — a failed seed leaves the file
# untouched and the harness still starts). Credentials live in the
# separate `~/.claude/.credentials.json`, so this never touches secrets.
systemd.services.hive-claude-onboarding = {
description = "Seed claude onboarding + project-trust so choom skips the walkthrough";
wantedBy = [ "multi-user.target" ];
before = [ "hive-agent.service" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
User = userName;
Group = userName;
ExecStart = pkgs.writeShellScript "hive-claude-onboarding" ''
set -eu
umask 077
cfg=${homeDir}/.claude.json
dir=/agents/${userName}/state
base='{}'
[ -s "$cfg" ] && base="$(cat "$cfg")"
# Idempotent: nothing to do when already onboarded + trusted.
if printf '%s' "$base" | ${pkgs.jq}/bin/jq -e \
--arg d "$dir" \
'.hasCompletedOnboarding == true and (.projects[$d].hasTrustDialogAccepted == true)' \
>/dev/null 2>&1; then
exit 0
fi
printf '%s' "$base" | ${pkgs.jq}/bin/jq \
--arg d "$dir" \
'.hasCompletedOnboarding = true
| .projects[$d].hasTrustDialogAccepted = true
| .projects[$d].hasCompletedProjectOnboarding = true' \
> "$cfg.tmp"
mv "$cfg.tmp" "$cfg"
chmod 0600 "$cfg"
'';
};
};
};
}