nexuscore-lib

Core runtime components extracted from nautilus_trader for use in Walras. Pure Cython + Python standard library — no Rust or other native dependencies.

Features

Message bus and clock: MessageBus, LiveClock, Clock, TimeEvent
Identifiers: TraderId, ComponentId, Identifier, UUID4
Cryptography: hmac_signature (HMAC-SHA256), HmacSigner

Import cost

import nexuscore costs ~5.6 MB resident. The only runtime dependency is python-dateutil, imported lazily by nexuscore.core.datetime and only for datetime strings that are not valid ISO 8601 — processes that never pass one never load it.

pandas.Timestamp inputs are still handled at full nanosecond precision. They are recognised by duck-typing (Timestamp subclasses datetime and exposes .value), so interop costs nothing when the caller already has pandas and imports nothing when it does not.

Usage

from nexuscore import (
    MessageBus,
    LiveClock,
    Clock,
    TimeEvent,
    TraderId,
    ComponentId,
    UUID4,
    hmac_signature,
    HmacSigner,
)

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This release

0.6.0

Aug 3, 2026

0.4.0

Jul 25, 2026

0.3.0

Jul 23, 2026

0.2.1

Jul 8, 2026

0.2.0

Jul 2, 2026

nexuscore-lib 0.6.0

nexuscore-lib

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