Crate trusty_common 

Shared utility surface for trusty-* projects.

Why: Port auto-detect, data-directory resolution, tracing init, NO_COLOR handling, and the OpenRouter chat-completions client appeared in both trusty-memory and trusty-search with subtle divergence. Centralising keeps them aligned and gives future trusty-* binaries a one-import surface.

What: pure utility functions — no global state. Each subsystem is a free function or a small helper struct.

Test: cargo test -p trusty-common covers port walking, data-dir creation, and the OpenRouter request shape (without hitting the network).

Test isolation: TRUSTY_DATA_DIR_OVERRIDE

macOS’s dirs::data_dir() resolves the application-support directory via NSFileManager, a native Cocoa API that completely ignores the HOME and XDG_DATA_HOME environment variables. This makes it impossible to redirect data-directory access in tests using ordinary env-var tricks, because the kernel query bypasses the environment entirely.

To work around this, resolve_data_dir checks the DATA_DIR_OVERRIDE_ENV (TRUSTY_DATA_DIR_OVERRIDE) environment variable before consulting dirs::data_dir(). When set, the variable’s value is used as the base directory verbatim, and dirs::data_dir() is never called.

This escape hatch is intended for testing only. Do not set it in production deployments; rely on the OS-standard data directory instead.

Re-exports

pub use shutdown::shutdown_signal;

pub use chat::BedrockProvider;

pub use chat::ChatEvent;

pub use chat::ChatProvider;

pub use chat::DEFAULT_BEDROCK_MODEL;

pub use chat::LocalModelConfig;

pub use chat::OllamaProvider;

pub use chat::OpenRouterProvider;

pub use chat::ToolCall;

pub use chat::ToolDef;

pub use chat::auto_detect_local_provider;

pub use port::bind_with_auto_port;

pub use data_dir::DATA_DIR_OVERRIDE_ENV;

pub use data_dir::is_dir;

pub use data_dir::resolve_data_dir;

pub use data_dir::sanitize_data_root;

pub use daemon_addr::check_already_running;

pub use daemon_addr::read_daemon_addr;

pub use daemon_addr::write_daemon_addr;

pub use health_probe::probe_health;

pub use tracing_init::init_tracing;

pub use tracing_init::init_tracing_with_buffer;

pub use tracing_init::maybe_disable_color;

pub use openrouter_legacy::ChatMessage;

pub use openrouter_legacy::openrouter_chat;Deprecated

pub use openrouter_legacy::openrouter_chat_stream;Deprecated

Modules

chat

Provider-agnostic streaming chat abstraction with tool-use support.

claude_config

Claude Code configuration discovery and patching.

daemon_addr

Daemon HTTP-address file helpers.

daemon_guard

Shared CLI daemon-guard helper (probe + spinner + spawn).

data_dir

Data-directory resolution and filesystem utilities.

github_path

Shared GitHub owner/repo path derivation (issue #1220).

health_probe

HTTP health-probe helper.

log_buffer

Bounded in-memory ring buffer of recent tracing log lines.

openrouter_legacy

Deprecated single-shot OpenRouter helpers.

port

TCP port auto-walking helper.

project_discovery

Claude Code project directory discovery.

shutdown

Shared graceful-shutdown signal helper for trusty-* daemons (issue #534).

sys_metrics

Process RSS / CPU sampling and data-directory sizing for daemon health.

tracing_init

Global tracing subscriber initialisation helpers.