doubleentry 0.3.0

[package]
name        = "doubleentry"
version     = "0.3.0"
edition     = "2024"
rust-version = "1.94"
authors     = ["hupe1980"]
description = """\
An immutable, tamper-evident double-entry bookkeeping engine. Balanced-by-construction \
entries, exact integer money, deterministic identity, and an append-only Merkle log with \
inclusion and consistency proofs. Zero I/O. No async. No chart of accounts.\
"""
keywords    = ["accounting", "ledger", "double-entry", "bookkeeping", "merkle"]
categories  = ["finance", "data-structures", "cryptography"]
license     = "MIT OR Apache-2.0"
repository  = "https://github.com/hupe1980/doubleentry"
homepage    = "https://hupe1980.github.io/doubleentry"
documentation = "https://docs.rs/doubleentry"
readme      = "README.md"

# An allowlist, not a denylist. `.gitignore` does not govern what `cargo
# package` ships — untracked files are included regardless — so anything not
# named here stays out by default: design notes, scratch files, the toolchain
# pin. `schema/*.sql` is not optional; the backends `include_str!` it.
include = [
    "src/**/*.rs",
    "schema/*.sql",
    "tests/*.rs",
    "README.md",
    "CHANGELOG.md",
    "LICENSE-APACHE",
    "LICENSE-MIT",
]

[package.metadata.docs.rs]
all-features = true
rustdoc-args = ["--cfg", "docsrs"]

[features]
default = []
## Enable serde `Serialize` / `Deserialize` on all public types.
##
## Serde is a transport concern only. The canonical encoding used for hashing is
## independent of it and is never routed through serde.
serde = ["dep:serde", "time/serde", "uuid/serde"]

## A PostgreSQL-backed `LedgerStore`, on sqlx.
##
## The reference DDL is `schema/postgres.sql`; the backend applies it itself via
## `PostgresStore::migrate`.
postgres = ["dep:sqlx", "sqlx/postgres"]

## A SQLite-backed `LedgerStore`, on sqlx.
##
## The reference DDL is `schema/sqlite.sql`; the backend applies it itself via
## `SqliteStore::migrate`.
sqlite = ["dep:sqlx", "sqlx/sqlite"]

## An Apache Iceberg cold tier: compacts sealed periods into Parquet.
##
## Pulls in Arrow, Parquet and object storage, so it is off by default.
iceberg = ["dep:iceberg", "dep:arrow-array", "dep:arrow-schema", "dep:parquet"]

[dependencies]
blake3   = "1"
smallvec = "1"
thiserror = "2"
time     = { version = "0.3", features = ["std", "macros"] }
uuid     = { version = "1", features = ["v7"] }

serde    = { version = "1", features = ["derive"], optional = true }
# No `macros`: every query in this crate is built at runtime with `sqlx::query`,
# and the feature exists only to enable the compile-time `query!` family. It
# pulls in `sqlx-macros-core`, which depends on *every* sqlx driver including
# MySQL, which depends on `rsa` — a crate carrying an unfixed timing-sidechannel
# advisory (RUSTSEC-2023-0071) that this crate can never reach.
sqlx     = { version = "0.8", default-features = false, features = [
    "runtime-tokio-rustls", "time", "uuid",
], optional = true }

# Cold tier. Arrow and Parquet must match what `iceberg` itself resolves.
iceberg      = { version = "0.10", optional = true }
arrow-array  = { version = "58", optional = true }
arrow-schema = { version = "58", optional = true }
parquet      = { version = "58", optional = true }

[dev-dependencies]
proptest   = "1"
serde_json = "1"
tokio      = { version = "1", features = ["macros", "rt-multi-thread", "sync"] }
testcontainers = "0.27"
testcontainers-modules = { version = "0.15", features = ["postgres"] }
tempfile   = "3"

[lints.rust]
missing_docs = "warn"
unsafe_code  = "forbid"

[lints.clippy]
# Money arithmetic must be total. Every arithmetic path in this crate goes through
# a checked operation that surfaces overflow as a typed error.
arithmetic_side_effects = "deny"
indexing_slicing        = "deny"
unwrap_used             = "deny"
expect_used             = "deny"
panic                   = "deny"